RURAL METRO CORP /DE/
8-K, 1997-07-15
LOCAL & SUBURBAN TRANSIT & INTERURBAN HWY PASSENGER TRANS
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<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION



                             Washington, D.C. 20549




                                    FORM 8-K
                                 CURRENT REPORT



                       Pursuant to Section 13 or 15(d) of
                       the Securities Exchange Act of 1934




         June 30, 1997                                      July 15, 1997
(Date of earliest event reported)
                                  


                             RURAL/METRO CORPORATION
             (Exact name of registrant as specified in its charter)


                                    DELAWARE
                 (State or other jurisdiction of incorporation)



                   0-22056                               86-0746929

          (Commission File Number)          (IRS Employer Identification Number)



                          8401 EAST INDIAN SCHOOL ROAD
                               SCOTTSDALE, ARIZONA
                                      85251
                    (Address of principal executive offices)
                                   (Zip Code)


                                 (602) 994-3886
              (Registrant's telephone number, including area code)
<PAGE>   2
                             RURAL/METRO CORPORATION

                                    FORM 8-K

                                 CURRENT REPORT


ITEM 2.  ACQUISITION OR DISPOSITION OF ASSETS

         Pursuant to an Agreement of Purchase and Sale dated February 25, 1997
between Registrant as buyer and Robert E. Ramsey, Jr. and Barry Landon as
Trustee of the Employee Stock Ownership Plan for the benefit of the Company's
employees, the Purchaser acquired all of the issued and outstanding stock of SW
General, Inc. ("SWG"), an Arizona corporation. SWG provides ambulance, emergency
response and medical transport service primarily in the metropolitan Phoenix,
Arizona area. The Registrant intends to continue the operations of the company.

         The purchase price consisted of 439,394 shares of the Registrant's
common stock and liabilities assumed of approximately $5.4 million. The
acquisition will be accounted for as a purchase in accordance with APB No. 16.

         Pursuant to an Agreement of Purchase and Sale dated February 25, 1997
between Registrant as buyer and Robert E. Ramsey, Jr., the Registrant acquired
all of the issued and outstanding stock of Southwest Ambulance of Casa Grande,
Inc. ("Casa Grande"), an Arizona corporation. Casa Grande provides ambulance,
emergency response and medical transport service primarily in southern and
eastern Arizona, including Pinal and Graham counties. The Registrant intends to
continue the operations of the company.

         The purchase price consisted of cash of $5,000 and 408,940 shares of
the Registrant's common stock and liabilities assumed of approximately $3.3
million. The acquisition will be accounted for as a purchase in accordance with
APB No. 16.

         Pursuant to an Agreement of Purchase and Sale dated February 25, 1997
between Registrant as buyer and Robert E. Ramsey, Jr., Patrick McGroder, Barry
Landon and Gary Ramsey, the Registrant acquired all of the issued and
outstanding stock of Southwest General Services, Inc. ("Services"), an Arizona
corporation. Services provides billing services for SWG and Casa Grande and
municipal ambulance service providers. The Registrant intends to continue the
operations of the company.

         The purchase price consisted of cash of $6,500,000. The acquisition
will be accounted for as a purchase in accordance with APB No. 16.

         Pursuant to an Agreement of Purchase and Sale dated February 25, 1997
between Registrant as buyer and Robert E. Ramsey, Jr., the Registrant acquired
all of the issued and outstanding stock of Medical Emergency Devices and
Services, Inc. ("MEDS"), an Arizona corporation. MEDS provides supply
procurement and fleet maintenance services primarily for SWG and Casa Grande.
The Registrant intends to continue the operations of the company.

         The purchase price consisted of cash of $13,300,000 and liabilities
assumed of approximately $0.8 million. The acquisition will be accounted for as
a purchase in accordance with APB No. 16.

         The registrant financed the cash portion of the purchase prices for the
acquisitions described above from cash from operations and its revolving credit
facility.




                                                                             -2-
<PAGE>   3
ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS

         (a)      Audited combined financial statements of SW General, Inc.,
                           Southwest Ambulance of Casa Grande, Inc., Southwest
                           General Services, Inc. and Medical Emergency Devices
                           and Services, Inc. will be filed no later than
                           September 15, 1997.


         (b)      Pro Forma Financial Statements to be filed no later than
                           September 15, 1997.


         (c)      EXHIBIT 10.49 Agreement of Purchase and Sale between
                           Rural/Metro Corporation and Robert E. Ramsey, Jr. and
                           Barry Landon, as trustee of the Employee Stock
                           Ownership Plan for the benefit of the Company's
                           employees, with respect to the stock of SW General,
                           Inc., as amended.

                  EXHIBIT 10.50 Agreement of Purchase and Sale between
                           Rural/Metro Corporation and Robert E. Ramsey, Jr.
                           with respect to the stock of Southwest Ambulance of
                           Casa Grande, Inc., as amended.

                  EXHIBIT 10.51 Agreement of Purchase and Sale between
                           Rural/Metro Corporation and Robert E. Ramsey, Jr.,
                           Patrick McGroder, Barry Landon and Gary Ramsey, the
                           vendors, with respect to the stock of Southwest
                           General Services, Inc., as amended.

                  EXHIBIT 10.52 Agreement of Purchase and Sale between
                           Rural/Metro Corporation and Robert E. Ramsey, Jr.,
                           with respect to Medical Emergency Devices and
                           Services, Inc., as amended.




                                                                             -3-
<PAGE>   4
                                   SIGNATURES


Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.



                                        RURAL/METRO CORPORATION







Date:  July 15, 1997                    By: /s/ Dean P. Hoffman
                                            ------------------------------------
                                                Dean P. Hoffman, Vice President
                                                and Principal Accounting Officer




                                                                             -4-

<PAGE>   1
                                                                EXHIBIT 10.49
                         AGREEMENT OF PURCHASE AND SALE



         THIS AGREEMENT OF PURCHASE AND SALE ("Agreement") is made as of this
25th day of February, 1997


BETWEEN:

                Rural/Metro Corporation, a Delaware corporation
                                 ("Purchaser")

                                     -and-

              Robert E. Ramsey, Jr., an individual ("Ramsey"), and
         Barry Landon, as trustee of the Employee Stock Ownership Plan
            for the benefit of the Company's employees (the "ESOP")
                          (collectively, the "Vendors"
                          and individually a "Vendor")


RECITALS:


         WHEREAS, the Vendors, as a group, beneficially own and control all the
issued and outstanding shares of the stock of SW General, Inc., an Arizona
corporation (the "Company");

         AND WHEREAS, the Vendors desire to sell and the Purchaser desires to
purchase all of the said issued and outstanding shares of the stock of the
Company owned by the Vendors all upon and subject to the terms and conditions
hereinafter set forth;

         NOW THEREFORE, in consideration of the premises and the mutual
agreements and covenants herein contained (the adequacy of which consideration
as to each of the parties hereto is hereby mutually admitted), the parties
hereto hereby covenant and agree as follows:

                                    ARTICLE 1

                  DEFINITIONS AND PRINCIPLES OF INTERPRETATION

1.1 DEFINITIONS - Whenever used in this Agreement, unless there is something in
the subject matter or context inconsistent therewith, the following words and
terms shall have the respective meanings ascribed to them as follows:

         (a)      "Agreement" means this Agreement of Purchase and Sale and all
                  instruments supplemental hereto or in amendment or
                  confirmation hereof;
<PAGE>   2
         (b)      "Business" means the business presently carried on by the
                  Company consisting of the provision of emergency and
                  non-emergency medical transportation services and related
                  billing and management services;

         (c)      "Business Day" means a day other than a Saturday, Sunday or
                  any day on which the principal commercial banks located in
                  Phoenix, Arizona are not open for business during normal
                  banking hours;

         (d)      "Closing" means the completion of the sale to and purchase by
                  the Purchaser of the Purchased Shares hereunder by the
                  transfer and delivery of documents of title thereto and the
                  payment of the purchase price therefore as contemplated
                  herein;

         (e)      "Closing Date" means the earlier of April 15, 1997 or five (5)
                  business days following the satisfaction or waiver of all
                  conditions precedent to this transaction, or such other date
                  as the Parties may mutually agree in writing;

         (f)      "Closing Time" means 10 o'clock a.m., Phoenix, Arizona local
                  time, on the Closing Date, or such other time on the Closing
                  Date as the Parties may agree;

         (g)      "ESOP Shares" means the 194,650.770 common shares of the
                  Company owned by the ESOP as of the date of this Agreement;

         (h)      "Financial Statements" means the audited financial statements
                  of the Company, including a balance sheet as of March 31,
                  1996, and an operating statement for the twelve (12) month
                  period then ended; and unaudited financial statements of the
                  Company, including a balance sheet as of December 31, 1996,
                  and an operating statement for the nine (9) month period then
                  ended; copies of which are annexed as Schedule "A" hereto;

         (i)      "Parties" means, collectively, the Vendors and the Purchaser,
                  and "Party" means any one of them;

         (j)      "Person" means any individual, corporation, partnership,
                  limited liability company, trust or unincorporated association
                  or similar entity, and pronouns have a similarly extended
                  meaning;

         (k)      "Purchase Price" means the purchase price to be paid by the
                  Purchaser to the Vendors for the Purchased Shares as provided
                  in Section 2.1 hereof;

         (l)      "Purchased Shares" means all the issued and outstanding common
                  shares of the stock of the Company;

         (m)      "Southwest Companies" means, collectively, the Company,
                  Southwest Ambulance of Casa Grande, Inc., Medical Emergency
                  Devices and Services (MEDS), Inc., and Southwest General
                  Services, Inc.

                                        2
<PAGE>   3
Terms defined in the preamble, recitals and body of this Agreement shall have
the same meanings herein as are ascribed thereto in the preamble, recitals and
body.

1.2 GENDER AND NUMBER - Words importing the singular include the plural and vice
versa; words importing gender include all genders.

1.3 ENTIRE AGREEMENT - This Agreement, including the Schedules and Exhibits
hereto, together with the agreements, certificates, and other documents and
instruments to be delivered pursuant hereto, constitute the entire agreement
between the Parties pertaining to the subject matter hereof and supersede all
prior agreements, understandings, negotiations and discussions, whether oral or
written, of the Parties and there are no warranties, representations or other
agreements between the Parties in connection with the subject matter hereof
except as specifically set forth herein and therein.

1.4 WAIVERS, ETC. - No supplement, modification, waiver or termination of this
Agreement shall be binding unless executed in writing by the Party to be bound
thereby. No waiver of any of the provisions of this Agreement, in whole or in
part, shall be deemed or shall constitute a waiver of any other provisions
hereof (whether or not similar), nor shall such waiver constitute a continuing
waiver unless otherwise expressly provided.

1.5 OTHER WORDS AND PHRASES - In this Agreement, unless otherwise expressly
provided (i) the words "hereof", "herein", "hereto" and "hereunder" and words of
similar import refer to this Agreement as a whole and not to the particular
Article, Section, Subsection, paragraph or other subdivision, and (ii) all
references to designated "Articles", "Sections", "Subsections", "paragraphs" or
other subdivisions are to the designated Articles, Sections, Subsections,
paragraphs and other subdivisions of this Agreement.

1.6 HEADINGS - The Article and Section headings contained herein are included
solely for convenience of reference, are not intended to be full or accurate
descriptions of the content thereof and shall not be considered part of this
Agreement.

1.7 APPLICABLE LAW - This Agreement and the rights, obligations and relations of
the Parties shall be governed by and construed in accordance with the laws of
the State of Arizona and the federal laws of the United States applicable
therein.

1.8 ACCOUNTING TERMS - All accounting terms shall have the meanings ascribed to
them in accordance with generally accepted accounting principles consistently
applied, and all references to "generally accepted accounting principles" shall
be deemed to be, unless otherwise specified, reference to accounting principles
which are generally accepted in the United States.

1.9 SCHEDULES AND APPENDICES - The following are the schedules and appendices
attached to and incorporated in this Agreement by reference and deemed to be an
integral part hereof:

<TABLE>
<CAPTION>
<S>      <C>                <C>
         Schedule "A" -     Financial Statements

         Schedule "B" -     Authorized and Issued Share Capital, Share
                            Ownership, and Purchase Price Allocation for each
                            of the Vendors
</TABLE>

                                        3
<PAGE>   4
<TABLE>
<CAPTION>
<S>      <C>                <C>
         Schedule "C" -     [Intentionally Omitted]

         Schedule "D" -     Employment Agreement

         Schedule "E" -     Operating Licenses

         Schedule "F" -     Undisclosed Liabilities, Guaranties and Indemnities

         Schedule "G" -     Absence of Changes

         Schedule "H" -     Unusual Transactions

         Schedule "I" -     Liens, Charges and Encumbrances

         Schedule "J" -     Real Property Leases and Owned Real Property

         Schedule "K" -     Vehicular Equipment Owned or Leased

         Schedule "L" -     Revenue Contracts

         Schedule "M" -     Contracts to Purchase Goods/Services

         Schedule "N" -     Employment Contracts, Collective Agreements, Pension or Similar
                            Plans, Unfair Labor Practice Complaints

         Schedule "O" -     Litigation

         Schedule "P" -     Employees over $40,000

         Schedule "Q" -     Insurance Policies

         Schedule "R" -     Intellectual Property

         Schedule "S" -     Third Party Approvals

         Schedule "T" -     Environmental Matters

         Schedule "U" -     Subsidiaries and Affiliates

         Schedule "V" -     Bank Accounts

         Schedule "W" -     Purchaser's Disclosure Schedule

         Schedule 2.6 -     Artwork Owned by Ramsey

         Appendix "J" -     Certain Real Estate Representations and Warranties
</TABLE>

                                        4
<PAGE>   5
<TABLE>
<CAPTION>
<S>      <C>                <C>
         Appendix 4.1(j) -  Investment Agreement
</TABLE>

                                    ARTICLE 2

                                PURCHASE AND SALE

2.1 PURCHASE PRICE - At the Closing Time, the Vendors shall sell and the
Purchaser shall purchase the Purchased Shares for an aggregate purchase price of
Fourteen Million, Five Hundred Thousand Dollars ($14,500,000) all of which shall
be paid by Purchaser's delivery at Closing of Four Hundred Thirty-Nine Thousand,
Three Hundred Ninety-Four (439,394) shares of the Common Stock, par value $.01
per share, of Purchaser (the "Rural/Metro Stock"), all issuable as hereinafter
set forth. For purposes of determining the number of shares of Common Stock of
Purchaser to be delivered to the Vendors as provided in this Section 2.1, the
Rural/Metro Stock has a value of $33.00 per share by agreement of the Parties.
The Rural/Metro Stock shall be allocated amongst the Vendors as set forth in
Schedule "B" hereto.

2.2      ACTION BY VENDORS AND PURCHASER AT THE CLOSING TIME -

         (a)      Delivery of Certificates by the Vendors, etc. - The Vendors
                  shall transfer and deliver to the Purchaser at the Closing
                  stock certificates representing all the Purchased Shares duly
                  endorsed in blank for transfer or accompanied by irrevocable
                  stock transfer powers of attorney duly executed in blank, in
                  either case by the holders of record thereof, free and clear
                  of all liens, claims, rights, charges, encumbrances and
                  security interests of whatsoever kind and nature. The Vendors
                  shall take such steps as shall be necessary to cause the
                  Company to enter the Purchaser or its nominee upon the books
                  of the Company as the holder of the Purchased Shares and to
                  issue one or more share certificates to the Purchaser
                  representing the Purchased Shares;

         (b)      Delivery of Certificates by Purchaser, etc. - The Purchaser
                  shall cause to be transferred and delivered to the Vendors at
                  the Closing stock certificates or such other evidence of stock
                  ownership representing the Rural/Metro Stock as duly
                  authorized, validly issued, fully paid and nonassessable,
                  which, at the time of delivery by the Purchaser to Vendors,
                  shall be free and clear of all liens, claims, rights, charges,
                  encumbrances and security interests of whatsoever kind and
                  nature. Such Rural/Metro Stock shall be delivered to the
                  Vendors as set forth in Schedule "B". At or prior to the
                  Closing, the Rural/Metro Stock shall have been registered for
                  issuance pursuant to Purchaser's "shelf registration" in
                  effect on the Form S-4 Registration Statement No. 33-95518, or
                  such other appropriate registration statement as determined by
                  Purchaser, filed pursuant to the Securities Act of 1933, as
                  amended (the "Act"). The certificates evidencing the Ru-
                  ral/Metro Stock shall bear the following legend:

                           THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE BEEN
                           ISSUED PURSUANT TO A TRANSACTION SUBJECT TO RULE 145
                           OF THE SECURITIES ACT OF

                                        5
<PAGE>   6
                           1933, AS AMENDED (THE "ACT") AND PURSUANT TO
                           EXEMPTIONS FROM REGISTRATION UNDER STATE SECURITIES
                           LAWS. THE SHARES MAY NOT BE OFFERED, SOLD,
                           TRANSFERRED, HYPOTHECATED OR OTHERWISE DISPOSED OF
                           EXCEPT (i) PURSUANT TO AN EFFECTIVE REGISTRATION
                           STATEMENT, (ii) PURSUANT TO THE PROVISIONS OF RULE
                           145 UNDER THE ACT, OR (iii) PURSUANT TO OTHER
                           EXEMPTIONS FROM REGISTRATION UNDER THE ACT OR ANY
                           APPLICABLE STATE SECURITIES LAWS, WHICH, IN THE
                           OPINION OF COUNSEL SATISFACTORY TO THE CORPORATION,
                           ARE AVAILABLE.

                  As of the Closing, the Rural/Metro Stock shall be traded on
                  The NASDAQ National Market.

         (c)      Delivery of Other Documents - The Vendors and Purchaser shall
                  deliver all such other documents at the Closing as
                  contemplated herein.

2.3 EMPLOYMENT AGREEMENT - At the Closing, the appropriate Parties shall execute
and deliver an Employment Agreement for Ramsey substantially in the form
attached hereto as Schedule "D" (the "Employment Agreement").

2.4 PLACE OF CLOSING - The Closing shall take place at the Closing Time at the
offices of O'Connor, Cavanagh, Anderson, Killingsworth & Beshears, P.A., One E.
Camelback Road, Suite 1100, Phoenix, Arizona or at such other place as may be
agreed upon by the Vendors and the Purchaser.

2.5 TAX TREATMENT - The acquisition of the Company is intended to be treated as
a tax free reorganization within the meaning of section 368(a)(1)(B) of the
Internal Revenue Code of 1986, as amended (the "Code").

2.6 ACKNOWLEDGEMENT REGARDING CERTAIN ASSETS - The Purchaser acknowledges that
the items of art work set forth in Schedule 2.6 are owned by Ramsey individually
and are not assets of the Company.

                                    ARTICLE 3

                         REPRESENTATIONS AND WARRANTIES

3.1 REPRESENTATIONS AND WARRANTIES OF VENDORS - To induce Purchaser to enter
into this Agreement and to perform its obligations hereunder, and with full
knowledge that Purchaser will rely thereon, the Vendors hereby represent and
warrant, jointly and severally, to the Purchaser the truth, accuracy and
completeness of the following:

         (a)      Enforceability of Obligations - This Agreement and each of the
                  other agreements referenced herein to which one or more
                  Vendors is a party have been duly executed and delivered by
                  each of such Vendors, and each of the Agreement and

                                        6
<PAGE>   7
                  such other agreements constitutes a valid and binding
                  obligation of each of the Vendors enforceable against each of
                  them in accordance with its terms.

         (b)      Right to Sell - The Vendors:

                  (i)       are the sole beneficial owners of the Purchased
                            Shares (which shares constitute all of the issued
                            and outstanding shares of the stock of the Company);
                            and

                  (ii)      are the holders of record of all the Purchased
                            Shares (which shares constitute all of the issued
                            and outstanding shares of the stock of the Company)
                            and have good and marketable title to, and rightful
                            possession of, all of the Purchased Shares free and
                            clear of any liens, claims, rights, charges,
                            encumbrances, security interests of whatsoever kind
                            and nature or rights of others (other than the
                            rights of the Purchaser hereunder) and no Person
                            (other than the Purchaser hereunder) has any
                            agreement, option or any rights capable of becoming
                            an agreement or option for the acquisition of the
                            Purchased Shares or any other shares in the Company.

         (c)      Licenses, Registrations and Compliance - The Company is
                  registered, licensed or otherwise qualified as a corporation
                  to do business in each jurisdiction in which the nature of its
                  business or the property owned or leased by it makes such
                  registration, licensing or other qualification necessary, and
                  such registrations, licenses or qualifications (as the case
                  may be) are in good standing. The Company is not in violation
                  in any material respect of any applicable laws, regulations,
                  orders, rules, decrees, ordinances, licenses or operating
                  authorities. The licenses and operating authorities issued by
                  federal, state or local authorities to the Company, copies of
                  which are attached hereto as Schedule "E" (the "Operating
                  Licenses"), comprise all the material licenses, permits and
                  operating authorities held in respect of the Business. The
                  Operating Licenses are all of the material operating
                  authorities necessary or reasonably required for the carrying
                  on of the Business as presently conducted and the ownership
                  and use of its assets, property, and premises. Except as
                  described in Schedule "E" and subject to applicable
                  regulations and policies of the Arizona Department of Health
                  Services, the Operating Licenses are not subject to review or
                  notification and there is no litigation, arbitration or other
                  proceeding pending or threatened which would materially and
                  adversely affect the use of the Operating Licenses by the
                  Business or which may result in the revocation, cancellation,
                  suspension or any materially adverse modification of any of
                  such Operating Licenses.

         (d)      Organization and Valid Existence - The Company is duly
                  incorporated and organized, validly existing and in good
                  standing under the laws of the State of Arizona, and has all
                  necessary corporate power, authority and capacity to own and
                  lease its property and assets and to carry on the Business as
                  presently conducted by it. Each of the Vendors has the full
                  right, power, authority and capacity to execute and deliver
                  this Agreement and the other agreements referenced herein to
                  which any such Vendor is a party, to consummate the

                                        7
<PAGE>   8
                  transactions contemplated hereby and thereby, and to fully and
                  timely perform its obligations hereunder and thereunder.

         (e)      Capitalization - The authorized capital stock of the Company
                  and the total number of shares of the Company's capital stock
                  presently issued and outstanding are as set forth on Schedule
                  "B". All issued and outstanding common shares of the Company
                  have been duly authorized and validly issued, are fully paid
                  and non-assessable, and are free of pre-emptive rights.

         (f)      Financial Statements - Copies of the Financial Statements are
                  each true, complete and correct and have been prepared on an
                  accrual basis from the books and records of the Company, in
                  accordance with generally accepted accounting principles
                  applied on a basis consistent with that of the preceding
                  periods. The Financial Statements each fairly present in all
                  material respects a true, accurate and complete statement of
                  the financial condition, assets, liabilities and results of
                  operations of the Company as of the dates and for the periods
                  set forth therein.

         (g)      Absence of Undisclosed Liabilities - Except as fully disclosed
                  on Schedule "F" hereto, the Company has no liabilities or
                  obligations, fixed or contingent, accrued or unaccrued that
                  are not fully and properly reflected, or adequately reserved
                  against, on the December 31, 1996 balance sheet of the Company
                  included in the Financial Statements, excepting only those
                  liabilities and obligations incurred by the Company in the
                  ordinary course of its business between the date of such bal-
                  ance sheet and the Closing Date, none of which liabilities is
                  individually or are collectively material, incurred in
                  violation of this Agreement, or would require accrual and/or
                  disclosure under generally accepted accounting principles.

         (h)      Guaranties and Indemnities - Schedule "F" hereto contains a
                  true, complete and correct list of all contracts and
                  agreements pursuant to which the Company has guaranteed or
                  indemnified any debt, liability or obligation of any other
                  person or entity, including, without limitation, any Vendor
                  (including, without limitation, the execution of any document
                  obligating the Company with respect to any performance or
                  other bond), or pursuant to which the Company has pledged or
                  otherwise encumbered any of its assets. Except as disclosed in
                  Schedule "F" hereto, the Company is not indebted to any
                  Vendor, nor is any Vendor indebted to the Company in any
                  amount for any purpose. Except as disclosed in Schedule "F"
                  hereto, the Company has not agreed to give any guaranty of
                  indebtedness or other obligations of third parties or made any
                  other commitment by which the Company is, or is contingently,
                  responsible for such indebtedness or other obligation.

         (i)      Tax Matters - The Company has duly and timely filed all
                  federal, state, county and local income, franchise, capital,
                  sales or use, excise, fuel, escheatment, property or other tax
                  returns, reports or filings required by any law or regulation
                  to be filed by it and has duly paid all taxes, assessments and
                  reassessments, and all other taxes, duties, governmental
                  charges, penalties, interest and fines due and payable by it
                  on or before the date hereof.

                                        8
<PAGE>   9
                  The federal, state, county and local income tax returns of the
                  Company provided to Purchaser are accurate in all respects.

                  There are no actions, suits, proceedings, inquiries,
                  investigations or claims of any nature or kind whatsoever now
                  pending or, to the best knowledge of Vendors, after due
                  inquiry, threatened, against the Company with respect to any
                  such returns or reports, or any such taxes, or any matters
                  under discussion with any federal, state, county, local or
                  other authority relating to such taxes.

                  The Company has not received from any authority any
                  assessment, reassessment or notice of underpayment of any
                  taxes or other penalty or charges and no such notice is
                  reasonably to be expected.

                  There is no misrepresentation that is attributable to wilful
                  default or fraud in tax returns of the Company previously
                  filed.

                  No consents extending or waiving the time limited for
                  reassessment of any taxes, duties, governmental charges,
                  penalties, interest or fines, or any statutes of limitations
                  related thereto have been filed with respect to the Company
                  for any fiscal year.

                  The Company has withheld from each payment made to any of its
                  officers, directors, former directors, and employees and
                  former employees the amount of all taxes and other deductions
                  (including without limitation, income taxes, unemployment,
                  disability, and other required taxes and contributions)
                  required to be withheld and has paid the same together with
                  the employer's share of same, if any (to the extent required
                  to be paid so no such amount is past due), to the proper tax
                  or other receiving officers within the prescribed times and
                  has filed, in complete and accurate form, all information and
                  other returns required pursuant to any applicable legislation
                  within the prescribed times.

                  The provision made for current and deferred taxes included in
                  the Financial Statements is sufficient for the payment of all
                  accrued and unpaid federal, state, county and local income,
                  franchise, capital, sales or use, excise, fuel, escheatment,
                  property or other taxes, assessments and reassessments,
                  duties, governmental charges, penalties, interest and fines
                  of, and payable by, the Company, whether or not disputed, for
                  the period ended the date thereof and for all periods prior
                  thereto.

         (j)      Absence of Changes - Except as disclosed on Schedule "G"
                  hereto, since December 31, 1996 there has not been:

                  (i)       any change in the condition or operations of the
                            business, assets, financial condition, or otherwise
                            of the Company other than changes in the ordinary
                            and normal course of business, none of which has
                            been materially adverse; or

                                        9
<PAGE>   10
                  (ii)      any damage, destruction or loss, labor trouble or
                            other event, development or condition of any
                            character (whether or not covered by insurance)
                            materially and adversely affecting the business,
                            financial condition, assets, properties or business
                            prospects of the Company.

         (k)      Absence of Unusual Transactions - Except as disclosed on
                  Schedule "H", the Company has not, other than with respect to
                  affiliated entities of the Company being acquired by the
                  Purchaser on the Closing Date, since December 31, 1996:

                  (i)       transferred, assigned, sold or otherwise disposed of
                            any assets, granted a lien, security interest,
                            mortgage or other encumbrance in any assets, or
                            cancelled any debts or claims except only in each
                            case in the ordinary and usual course of business or
                            to the extent such assets, liens, security
                            interests, mortgages, encumbrances, debts or claims
                            do not individually or in the aggregate exceed
                            $20,000 (when added to any dispositions, grants, or
                            cancellations by the other Southwest Companies);

                  (ii)      incurred or assumed any obligation or liability
                            which individually or in the aggregate exceeds
                            $100,000 (fixed or contingent), except those listed
                            in Schedule "F" hereto and except unsecured current
                            obligations and liabilities incurred in the ordinary
                            and normal course of business which individually or
                            in the aggregate do not exceed $100,000;

                  (iii)     discharged or satisfied any lien or encumbrance, or
                            paid any obligation or liability (fixed or
                            contingent) other than liabilities included in the
                            Financial Statements and liabilities incurred since
                            the date thereof in the ordinary and normal course
                            of business;

                  (iv)      declared or made any payment of any dividend or
                            other distribution in respect of any shares of its
                            stock as applicable, or purchased or redeemed any
                            such shares thereof, or effected any subdivision,
                            consolidation or reclassification of any such
                            shares;

                  (v)       suffered or been threatened with any material
                            adverse change in its business or financial
                            condition, business activities, or business
                            prospects, including, without limiting the
                            generality of the foregoing, the existence or threat
                            of any labor dispute, or any material adverse change
                            in, or loss of, any material relationship between
                            the Company and any of its customers, suppliers or
                            key employees, or entered into any commitment or
                            transaction not in the ordinary and usual course of
                            business where such commitment or transaction is or
                            would be material in relation to the Company;

                  (vi)      made any general wage or salary increases in respect
                            of personnel which it employs, other than increases
                            in the ordinary and normal course of business, nor
                            hired any employee who shall have an annual salary
                            in excess of $70,000; or

                                       10
<PAGE>   11
                  (vii)     authorized or agreed or otherwise become committed
                            to do any of the foregoing.

         (l)      Title to Properties - Except as disclosed in Schedules "I" and
                  "J" hereto, the Company has good and marketable title to all
                  its respective properties, interests in properties and assets,
                  real and personal, including without limitation those
                  reflected in the Financial Statements or acquired since the
                  date of the Financial Statements, free and clear of all
                  mortgages, pledges, liens, claims, rights, encumbrances or
                  charges of any kind or nature.

         (m)      Equipment and Condition of Assets - All non-vehicular
                  equipment, assets, personal property and fixtures in the
                  possession or custody of the Company which, as of the date
                  hereof, are owned, leased or held under license or similar
                  arrangement by the Company and are necessary for the conduct
                  of the Business are in good condition, repair and proper
                  working order, reasonable wear and tear excepted. Copies of
                  all leases, licenses, agreements and other documentation
                  relating thereto have been provided or made available to
                  Purchaser.

         (n)      Leases of Real Property - The Company is not a party to or
                  bound by any leases of real property other than those
                  disclosed in Schedule "J" hereto, and all interests held by
                  the Company as lessee under such leases are free and clear of
                  any and all liens, charges and encumbrances of any nature and
                  kind whatsoever. All rental and other payments required to be
                  paid by the Company, as lessee, pursuant to such leases have
                  been duly paid. Such leases are in full force and effect
                  without amendment thereto and the Company is not otherwise in
                  default in any material respect in meeting its obligations
                  contained in any such lease. The representations or warranties
                  set forth in Appendix "J" hereto with respect to any real
                  property owned by NRM Properties, Inc. or Chaparral
                  Properties, Inc. that is subject to a lease to which the
                  Company is a party or by which it is bound are true and
                  correct.

         (o)      Real Property - The Company does not own any interest in real
                  property, except as disclosed on Schedule "J" hereto.

         (p)      Vehicular Equipment - Schedule "K" contains a list of all
                  vehicular equipment owned or leased by the Company and copies
                  of all motor vehicle certificates of title with respect to
                  such vehicular equipment have been provided to the Purchaser.
                  Such vehicular equipment is, in all material respects, in good
                  condition, repair and proper working order, reasonable wear
                  and tear excepted, and each vehicle complies in all material
                  respects with all laws and regulations affecting its operation
                  and each vehicle bears a current safety standards certificate.

         (q)      Revenue Contracts - Except as disclosed in Schedule "L", the
                  Company is not a party to any contract pursuant to which it is
                  to provide transportation or other services. Each of the
                  contracts set out in Schedule "L" is in full force and effect
                  and enforceable in accordance with its respective terms and
                  conditions, and there

                                       11
<PAGE>   12
                  is not existing any default, or event or condition which, with
                  the giving of notice or the passage of time, or both, would
                  constitute an event of default, by the Company or any other
                  party thereto under any of such contracts, that could have a
                  material adverse effect on any of such contracts.

         (r)      Contracts to Purchase - Except as set out in Schedule "M", the
                  Company is not a party to any contract to purchase any goods
                  and/or services with a value in excess of $20,000/year. Each
                  of the contracts set out in Schedule "M" is in full force and
                  effect and enforceable in accordance with its respective terms
                  and conditions, and there is not existing any default, or
                  event or condition which, with the giving of notice or the
                  passage of time, or both, would constitute an event of
                  default, by the Company or any other party thereto under any
                  of such contracts, that could have a material adverse effect
                  on any of such contracts.

         (s)      Employment Contracts - Except as set out in Schedule "N", the
                  Company neither has any written employment contracts, union or
                  collective labor, pension, deferred profit sharing,
                  retirement, employee benefit, stock option or other similar
                  agreements or plans nor has it had any such plan or agreement
                  in the past, nor does it have any written contracts of
                  employment with any employees or, to the best of Vendors'
                  knowledge, any oral contracts of employment which are not
                  terminable on the giving of reasonable notice in accordance
                  with applicable law. The Company has not, in the last four (4)
                  years, experienced any labor disputes which were of a material
                  nature, work stoppages or strikes. There is not now any
                  circumstances or conduct which could result in the filing of
                  an unfair labor practice complaint against the Company; any
                  such complaints previously raised and currently ongoing and
                  the current status thereof are particularized in Schedule "N".

         (t)      Material Contracts - Except for the material contracts and
                  commitments disclosed herein, including the Schedules attached
                  hereto, the Company is not a party to or bound by any material
                  contract or commitments whether oral or written. True, correct
                  and complete copies of all such written contracts and
                  commitments either have been delivered to the Purchaser or
                  will be delivered prior to Closing. Each of such contracts and
                  commitments is in full force and effect and enforceable in
                  accordance with its respective terms and conditions, and there
                  is not existing any default, or event or condition which, with
                  the giving of notice or the passage of time, or both, would
                  constitute an event of default, by either of the Company or
                  any other party thereto under any of such contracts or
                  commitments, that could have a material adverse effect on any
                  of such contracts or commitments. The Company has the
                  capacity, including the necessary personnel, equipment and
                  supplies, to perform all its obligations thereunder in all
                  material respects.

         (u)      Pension/Benefit/Health Plans - The only pension, benefit or
                  health plans established by or for the Company for its
                  employees are those disclosed in Schedule "N" hereto; such
                  plans are duly registered where required by, and are in good
                  standing under all, applicable legislation; all required
                  employer contributions thereunder to the date hereof have been
                  made and the respective

                                       12
<PAGE>   13
                  pension funds are funded in accordance with the rules of the
                  pension plans and no past service funding liabilities exist
                  thereunder. Except as disclosed on Schedule "N" hereto, there
                  is no employee benefit or health plan established or
                  maintained for employees of the Company, or to which
                  contributions have been made by the Company with respect to
                  such employees, which is subject to Title IV of the Employee
                  Retirement Income Security Act of 1974, as amended ("ERISA").
                  The Company is in compliance in all material respects with all
                  provisions of ERISA, and the Company is not subject to any
                  liability or obligation arising under ERISA or any other
                  applicable law or the provisions of any other employee benefit
                  plan, including but not limited to liability owed to the
                  Pension Benefit Guaranty Corporation on account of a
                  termination or partial termination of any employee benefit
                  plan, any liability resulting from a "prohibited transaction",
                  any liability for failure to meet minimum funding
                  requirements, any liability related to the termination of a
                  multi-employer pension plan, and any liability caused by the
                  non-qualification of any plan under section 401 of the Code.
                  No pension plan, no employee benefit plan, no "disqualified
                  person" (as such term is used in Section 4975(c)(1) of the
                  Code) has engaged, and no Vendor has engaged, in any
                  transaction in violation of Section 406 of ERISA or any
                  "prohibited transaction" (as defined in Section 4975(c)(1) of
                  the Code) other than any such transaction which is exempt
                  under Section 408 of ERISA or Section 4975(d) of the Code. The
                  401k plan of the Company meets in all material respects the
                  requirements of section 401(a) of the Code. The Company does
                  not have any obligation to provide material post-retirement
                  benefits of any nature to its employees, former employees or
                  their survivors, dependents or beneficiaries, except as may be
                  required by the Consolidated Omnibus Budget Reconciliation Act
                  of 1986 ("COBRA") or any other applicable state medical
                  benefits continuation laws, nor will any such obligation to
                  provide such post-retirement benefits be incurred solely as a
                  result of the consummation of the within transactions. The
                  Company has not caused there to occur a "mass lay-off", as
                  defined in section 693.3 of the regulations issued under the
                  Worker Adjustment and Retention Notification Act (20 CFR 639)
                  at any time in the past.

         (v)      Absence of Conflicting Agreements - Neither the Company nor
                  any Vendor is a party to, bound or affected by or subject to
                  any indenture, mortgage, lease, agreement, instrument, charter
                  or by-law provision, or, to the best of Vendors' knowledge,
                  any statute, regulation, order, judgment, decree or law which
                  would be in any material respect violated, contravened,
                  breached by or under which a material default would occur, as
                  a result of the execution and delivery of this Agreement or
                  the consummation of any of the transactions provided for
                  herein.

         (w)      Litigation - Except for the items disclosed in Schedule "O"
                  hereto, all of which are fully insured against, there is no
                  suit, action, litigation, arbitration proceeding or private or
                  governmental proceeding, hearing before an administrative
                  tribunal, including appeals and applications for review, in
                  progress, pending or to the knowledge of Vendors threatened
                  against the Company or materially and adversely affecting its
                  properties, business, financial condition or business
                  prospects. Except as shown in Schedule "O", there is not
                  presently outstanding

                                       13
<PAGE>   14
                  against the Company any adverse judgment, decree, injunction,
                  rule or order of any court, governmental department,
                  commission, agency, instrumentality or arbitrator.

         (x)      Employees - There are set forth in Schedule "P" hereto the
                  names and titles of all personnel employed or engaged by the
                  Company whose annual base salary exceeds $40,000, including
                  rates of remuneration, positions held and date of commencement
                  of employment. The employment records of the Company are true,
                  complete and correct in all material respects. Except as
                  disclosed in Schedule "P" hereto, the Company does not owe any
                  past or present employee any sum other than for accrued wages
                  or salaries for the current payroll period, reimbursable
                  expenses, accrued vacation and holiday pay (none of which is
                  for a period in excess of two (2) weeks' pay with respect to
                  any single employee), sick leave rights and amounts payable
                  under employee benefit plans, and all of such sums that accrue
                  from the date hereof until the Closing shall be timely paid by
                  the Company on or prior to the Closing Date. There is not
                  pending or, to the best knowledge of Vendors, after due
                  inquiry, threatened, any charge or complaint against or
                  involving the Company or any of its officers or employees by
                  the National Labor Relations Board, the Occupational Health &
                  Safety Administration, the Department of Labor, or any similar
                  federal, state or local board of agency, or any representative
                  thereof.

         (y)      Insurance - The Company currently has in force the policies of
                  insurance set out in Schedule "Q" hereto. Such policies are
                  appropriate to its Business, property and assets, are in such
                  amounts and against such risks as are customarily carried and
                  insured against by owners of comparable businesses, properties
                  and assets, and, to the knowledge of Vendors, are issued by
                  responsible insurers. All such policies of insurance are in
                  full force and effect and the Company is not in default,
                  whether as to the payment of premium or otherwise, under the
                  terms of any such policy. Such policies can be cancelled
                  without penalty or premium, and such cancellation would
                  trigger a full pro rata refund of prepaid premiums. The
                  Company has no liability for retrospective insurance premiums
                  or costs.

         (z)      Intellectual Property - Attached as Schedule "R" is a true and
                  correct schedule identifying all material patents, patent
                  rights or licenses, patent applications, trademarks, trademark
                  registrations and applications, trademark rights, trade names,
                  trade secrets, service marks and applications therefore,
                  copyrights and copyright registrations and copyright
                  applications used in whole or in part in or required for the
                  proper carrying on of the Business of the Company (the
                  "Intellectual Property"). None of the matters covered by the
                  Intellectual Property, nor any of the products or services
                  sold or provided by the Company, nor any of the processes used
                  or the business practices followed by the Company, infringes
                  or has infringed upon any trademark, trade name, fictitious
                  name, service mark, trade secrets, patent or copyright owned
                  by any person or entity (or any application with respect
                  thereto), or constitutes unfair competition. The Company is
                  not obligated to pay any royalty or other payment with respect
                  to any of the Intellectual Property, except as disclosed in
                  Schedule "R". Except as

                                       14
<PAGE>   15
                  disclosed in Schedule "R" hereto, to the best of Vendors'
                  knowledge, no person or entity is producing, providing,
                  selling or using products, services, names, or marks that
                  would constitute an infringement of any of the Intellectual
                  Property.

         (aa)     Corporate Records - The corporate records and minute books of
                  the Company have been delivered to the Purchaser and contain
                  complete and accurate copies of the Company's Articles of
                  Incorporation, as amended, by-laws, minutes of all meetings,
                  and resolutions of its directors and shareholders. All such
                  meetings were duly called and held, all such by-laws and
                  resolutions were duly passed and the share certificate books,
                  registers of shareholders and members, registers of transfers
                  and registers of directors of the Company are complete and
                  accurate in all material respects. In all material respects,
                  the books and records of the Company with respect to its
                  assets, businesses, operations, properties and prospects have
                  been maintained in accordance with generally accepted
                  accounting principles and in the usual, regular and ordinary
                  manner, and all entries with respect thereto have been made
                  and all transactions have been properly accounted for. All
                  applicable corporate and other laws and all applicable
                  generally accepted accounting principles relating to the
                  maintenance of such books and records have been complied with
                  by the Company.

         (bb)     Third Party Approvals - Except for approvals required by the
                  Federal Trade Commission or other agencies for purposes of
                  complying with the Hart-Scott-Rodino Antitrust Improvements
                  Act of 1976, as amended, and the rules and regulations
                  promulgated thereunder (the "Hart Act") and required by the
                  Arizona Department of Health Services, and except as disclosed
                  in Schedule "S", there are no approvals, consents or waivers
                  required to be obtained or applications required to be filed
                  from or with governmental authorities or from any other Person
                  whatsoever, including pursuant to any leases or contracts
                  containing prohibitions or pre-consent provisions pertinent to
                  this Agreement in order to permit the transactions
                  contemplated herein or to preserve the Business and/or assets
                  of the Company.

         (cc)     Compliance with Environmental Laws - Except as disclosed in
                  Schedule "T" hereto, the Company and the Business are in all
                  material respects in compliance with all, and do not violate
                  in any material respect, and have not violated in any material
                  respect any, applicable federal, state, municipal or local
                  laws, regulations, orders, certificates of approval, licenses,
                  permits, governmental decrees, ordinances or any and all other
                  applicable legislation or regulatory requirements with respect
                  to environmental, health or safety matters. There has been no
                  storage, treatment, generation, discharge, transportation or
                  disposal of industrial, toxic or hazardous substances or solid
                  or hazardous waste by, or on behalf of, the Company, in
                  violation of any federal, state or local law, statute, rule or
                  regulation or any decree, order, arbitration award or
                  agreement with or any license or permit from any federal,
                  state or local governmental authority. There has been no
                  spill, discharge, leak, emission, injection, escape, dumping,
                  or release of any kind by, or on behalf of, the Company, into
                  the environment (including, without limitation, into air,
                  water or ground water) of any materials

                                       15
<PAGE>   16
                  including, without limitation, industrial, toxic or hazardous
                  substances or solid, medical or hazardous waste, as defined
                  under any federal, state or local law, statute, rule or
                  regulation other than those releases permissible under such
                  law, statute, rule or regulation or allowable under applicable
                  permits.

         (dd)     Compliance - The Company is not in violation in any material
                  respect of any laws, regulations, decrees or ordinances
                  applicable to the Business, assets, properties, financial
                  condition or business prospects of the Company.

         (ee)     Subsidiaries and Affiliates - Except as disclosed in Schedule
                  "U" hereto, the Company has no subsidiaries or any other
                  equity investment in any entity engaged in any aspect of the
                  medical or transportation industry. Except as disclosed in
                  Schedule "U" hereto, no Vendor has any equity interest in any
                  "Affiliates." For purposes of this Agreement, the term
                  "Affiliates" shall mean all entities engaged in any aspect of
                  the medical or transportation industry in which the applicable
                  Vendor is either an officer or director, or in which the
                  applicable Vendor, directly or indirectly, owns or controls
                  ten percent (10%) or more of the equity securities of the
                  entity.

         (ff)     Accounts Receivable - The accounts receivable existing on the
                  books of the Southwest Companies at the Closing Time (net of
                  contractual allowance) (the "Closing Accounts Receivable")
                  shall be at least $6,040,000 (the "Minimum Accounts
                  Receivable") and an amount at least equal to the Minimum
                  Accounts Receivable or the Closing Accounts Receivable,
                  whichever amount is greater (the "Target Accounts
                  Receivable"), is good and collectible within 365 calendar days
                  thereafter. None of the Closing Accounts Receivable are
                  subject to the return of the merchandise or other property the
                  selling price of which is represented thereby, or to offsets
                  or counterclaims, the extent of which is in excess of any
                  reserves for collectibility thereof reflected in the books of
                  the Southwest Companies at the Closing.

         (gg)     Bank Accounts - Schedule "V" hereto sets forth the name and
                  location of each bank in which the Company has an account,
                  lock box or safe deposit box, the number of each such account
                  or box, the names of all signatories thereto and the persons
                  authorized to draw thereon or have access thereto. No power of
                  attorney exists from the Company.

         (hh)     Accuracy of Documents, Representations and Warranties - The
                  copies of all documents furnished to Purchaser, or any of
                  its representatives by or on behalf of any Vendor or the
                  Company, or any one or more of them, or their representatives,
                  are true, complete and correct in all material respects. No
                  representation or warranty of any Vendor contained in this
                  Agreement or the other agreements to be executed by any Vendor
                  pursuant hereto, and no statement contained in the exhibits,
                  the schedules or the other documents delivered by or on behalf
                  of any Vendor, or his or its representatives pursuant to or in
                  connection with this Agreement or the other agreements to be
                  executed by any Vendor pursuant hereto or any of the
                  transactions contemplated hereby or thereby, contains any
                  untrue

                                       16
<PAGE>   17
                  statement of a material fact, or omits to state any material
                  fact required to be stated herein or therein in order to make
                  the statements contained herein or therein not misleading.

3.2 REPRESENTATIONS AND WARRANTIES OF THE PURCHASER - To induce the Vendors to
enter into this Agreement and to perform Vendors' obligations hereunder, and
with full knowledge that Vendors will rely thereon, the Purchaser hereby
represents and warrants to the Vendors the truth, accuracy and completeness of
the following, except as disclosed in Schedule "W" hereto:

         (a)      Organization and Valid Existence - The Purchaser is a
                  corporation duly incorporated and organized, validly
                  existing and in good standing under the laws of the State of
                  Delaware and has all necessary corporate power, authority and
                  capacity to execute and deliver the Agreement and the other
                  agreements referenced herein to which the Purchaser is a
                  party, to consummate the transactions contemplated hereby and
                  thereby, and to fully and timely perform its obligations
                  hereunder and thereunder. The execution and delivery by
                  Purchaser of this Agreement and the other agreements
                  referenced herein to which Purchaser is a party, and the
                  consummation of the transactions contemplated hereby and
                  thereby, have been duly authorized and approved by Purchaser's
                  board of directors, and no other corporate proceedings on the
                  part of Purchaser are required to authorize the execution and
                  delivery of this Agreement, the other agreements referenced
                  herein to which Purchaser is a party, or the consummation of
                  the transactions contemplated hereby or thereby.

         (b)      Enforceability - This Agreement and the other agreements
                  referenced herein to which Purchaser is a party have been duly
                  executed and delivered by Purchaser and constitute legal,
                  valid and binding obligations of Purchaser, enforceable
                  against Purchaser in accordance with their respective terms.

         (c)      Absence of Conflicting Agreements - The Purchaser is not a
                  party to, bound or affected by or subject to any indenture,
                  mortgage, lease, agreement, instrument, charter or by-law
                  provision, statute, regulation, order, judgment, decree or law
                  which would be violated, contravened or breached by, or under
                  which any default would occur, as a result of the execution
                  and delivery of this Agreement or the consummation of any of
                  the transactions provided for herein.

         (d)      Litigation - There is no suit, action, litigation, arbitration
                  proceeding or governmental proceeding, including appeals and
                  applications for review, in progress, pending or, to the best
                  of the knowledge, information and belief (after due inquiry)
                  of the senior officers of the Purchaser, threatened against or
                  involving the Purchaser or any judgment, decree, injunction,
                  rule or order of any court, governmental department,
                  commission, agency, instrumentality or arbitrator which, in
                  any such case, would materially and adversely affect the
                  ability of the Purchaser to enter into this Agreement or to
                  consummate the transactions contemplated hereby.

                                       17
<PAGE>   18
         (e)      No Liens - At the time of delivery by the Purchaser to
                  Vendors, the Rural/Metro Stock shall be free and clear of any
                  liens, charges, encumbrances or rights of others.

         (f)      Third Party Approvals - Except for approvals required by the
                  Federal Trade Commission or other agencies for purposes of
                  complying with the Hart Act and those required by the Arizona
                  Department of Health Services, and except as disclosed in
                  Schedule "W", there are no approvals, consents or waivers
                  required to be obtained or applications required to be filed
                  from or with governmental authorities or from any other Person
                  whatsoever, including pursuant to any leases or contracts
                  containing prohibitions or pre-consent provisions pertinent to
                  this Agreement, in order to permit the transactions
                  contemplated herein.

         (g)      Restrictions on Transfer - Other than as provided by federal
                  and state securities laws, rules and regulations, including,
                  without limitation, Rule 145 promulgated under the Act, and
                  the window policies established by Purchaser's Board of
                  Directors concerning the purchase and sale of Purchaser's
                  securities by insiders of the Purchaser, there are no
                  restrictions on transfer of the Rural/Metro Stock by Vendors.

         (h)      Accuracy of Documents, Representations and Warranties - The
                  copies of all documents furnished to the Vendors and their
                  representatives by or on behalf of Purchaser and its
                  representatives are true, complete and correct in all material
                  respects. No representation or warranty of Purchaser contained
                  in this Agreement or the other agreements referenced herein to
                  which Purchaser is a party, and no statement contained in the
                  exhibits, the schedules or the other documents delivered by
                  or on behalf of Purchaser or its representatives pursuant to
                  or in connection with this Agreement or any of the
                  transactions contemplated hereby contains any untrue statement
                  of a material fact, or omits to state any material fact
                  required to be stated herein or therein in order to make the
                  statements contained herein or therein not misleading.

3.3 NO BROKER - Each of the Parties represents and warrants to the others that
all negotiations relating to this Agreement and the transactions contemplated
hereby have been carried on between them directly and without the intervention
of any other party in such manner as to give rise to any valid claims against
any of the Parties for a brokerage commission, finder's fee or other like
payment.

3.4 NON-WAIVER - No investigations made by or on behalf of a Party at any time
shall have the effect of waiving, diminishing the scope of or otherwise
affecting any representation or warranty made by the other Party herein or
pursuant hereto.

3.5 NATURE AND SURVIVAL OF REPRESENTATIONS, WARRANTIES AND COVENANTS - All
statements contained in any certificate or other instrument delivered by or on
behalf of a Party pursuant to or in connection with the transactions
contemplated by this Agreement shall be deemed to be made by such Party
hereunder.

                                       18
<PAGE>   19
                                    ARTICLE 4

                     CONDITIONS PRECEDENT TO THE PERFORMANCE
                       BY THE PURCHASER AND THE VENDORS OF
                     THEIR OBLIGATIONS UNDER THIS AGREEMENT

4.1 PURCHASER'S CONDITIONS - The obligation of the Purchaser to complete the
purchase of the Purchased Shares hereunder shall be subject to the satisfaction
of, or compliance with, in all material respects, at or before the Closing Time,
each of the following conditions precedent (each of which is hereby acknowledged
to be inserted for the exclusive benefit of the Purchaser and may be waived by
it in whole or in part):

         (a)      Truth and Accuracy of Representations of Vendors at the
                  Closing Time - All of the representations and warranties of
                  Vendors made in or pursuant to this Agreement shall be true
                  and correct in all material respects as at the Closing Time
                  and with the same effect as if made at and as of the Closing
                  Time (except as such representations and warranties may be
                  affected by the occurrence of events or transactions expressly
                  contemplated and permitted hereby), and the Purchaser shall
                  have received a certificate from each of the Vendors
                  confirming the truth and correctness in all material respects
                  of their representations and warranties contained herein;

         (b)      Performance of Obligations - The Vendors shall have performed
                  or complied with all of their obligations, covenants and
                  agreements hereunder;

         (c)      Receipt of Closing Documentation - All documentation relating
                  to the due authorization and completion of the sale and
                  purchase hereunder of the Purchased Shares and all actions and
                  proceedings taken on or prior to the Closing in connection
                  with the performance by the Vendors of their obligations under
                  this Agreement shall be reasonably satisfactory to the
                  Purchaser and the Purchaser shall have received copies of all
                  such documentation or other evidence as it may reasonably
                  request in order to establish the consummation of the
                  transactions contemplated hereby and the taking of all
                  corporate proceedings in connection therewith in compliance
                  with these conditions, in form (as to certification and
                  otherwise) and substance reasonably satisfactory to the
                  Purchaser;

         (d)      Consents, Authorizations and Registrations - All consents,
                  approvals, orders and authorizations of any Persons or
                  governmental authorities (or registrations, declarations,
                  filings or recordings with any such authorities) required in
                  connection with the completion of any of the transactions
                  contemplated by this Agreement (including, without limitation,
                  any notifications, approvals or consents required by the
                  Arizona Department of Health Services) shall have been
                  obtained on or before the Closing Time; the Vendors shall have
                  obtained and delivered by Closing to the Purchaser written
                  consents, in form and substance satisfactory to the Purchaser,
                  to the transaction contemplated herein which are required (if
                  any) pursuant to the real property leases referred to in
                  Schedule "J" (and any customer contracts where approval or
                  consent is required), including, without limiting the

                                       19
<PAGE>   20
                  generality of the foregoing, such acknowledgements and
                  confirmations of good standing from the lessors in respect of
                  the real property leases referred to in Schedule "J" hereto as
                  may be reasonably requested by the Purchaser;

         (e)      Directors and Officers of Company - Subject to the terms of
                  the Employment Agreement, there shall have been delivered to
                  the Purchaser on or before the Closing Date the resignations
                  of such persons as the Purchaser shall direct who are
                  presently directors and/or officers of the Company.

         (f)      No Damage - No substantial damage by fire or other hazard to
                  the assets of the Company shall have occurred from the date
                  hereof to the Closing Date which is not fully and adequately
                  insured against;

         (g)      Litigation - On the Closing Date, there shall be no
                  litigation, governmental investigation or proceeding pending
                  or threatened for the purpose of enjoining or preventing the
                  consummation of any of the transactions contemplated by this
                  Agreement or otherwise claiming that such consummation is
                  improper;

         (h)      Hart-Scott-Rodino Filing - The applicable waiting period under
                  the Hart Act shall have expired or terminated.

         (i)      Management - Rural/Metro's Board of Directors shall have
                  confirmed the appointment of Ramsey to the Board of Directors
                  of Rural/Metro and to a senior executive position with
                  Rural/Metro.

         (j)      Investment Agreement - Vendors shall have each executed and
                  delivered to Purchaser an Investment Agreement in form and
                  content substantially as attached hereto as Appendix 4.1(j).

         (k)      Environmental Reports - Purchaser shall have received reports,
                  in form and content satisfactory to Purchaser, in the exercise
                  of its sole discretion, from independent environmental
                  consultants acceptable to Purchaser in its sole discretion,
                  and from legal counsel to Purchaser, concerning the real
                  properties owned or leased by the Company, which reports shall
                  be based, in part, on the results of environmental site
                  assessments which Purchaser may cause to be completed for and
                  on behalf of Purchaser prior to the Closing Date on all such
                  real or leased properties, which reports, if any, shall be
                  prepared at Purchaser's expense.

         (l)      Due Diligence - Purchaser shall, in the exercise of its sole
                  discretion, be entirely satisfied with the business,
                  operations, financial condition, assets and liabilities of the
                  Company.

         (m)      Schedules - Purchaser shall have received from Vendors the
                  Schedules referred to herein and all amendments and
                  modifications thereto, and Purchaser shall, in the exercise of
                  its sole discretion, be entirely satisfied with the nature and
                  extent

                                       20
<PAGE>   21
                  of the disclosures made therein and the representations and
                  warranties of Vendors as modified by the disclosures contained
                  in the Schedules.

         (n)      Simultaneous Closings - On the Closing Date, the share
                  purchases and other transactions contemplated in each of the
                  Agreements of Purchase and Sale executed of even date herewith
                  for the sale of Southwest Ambulance of Casa Grande, Inc.,
                  Medical Emergency Devices and Services (MEDS), Inc., and
                  Southwest General Services, Inc. shall be consummated
                  simultaneously with the transactions contemplated herein.

4.2 VENDORS' CONDITIONS - The obligations of the Vendors to complete the sale of
the Purchased Shares hereunder shall be subject to the satisfaction of or
compliance with, at or before the Closing Time, each of the following conditions
precedent (each of which is hereby acknowledged to be inserted for the exclusive
benefit of the Vendors and may be waived by them in whole or in part):

         (a)      Truth and Accuracy of Representations of Purchaser at Closing
                  Time - All of the representations and warranties of the
                  Purchaser made in or pursuant to this Agreement shall be true
                  and correct in all material respects as at the Closing Time
                  and with the same effect as if made at and as of the Closing
                  Time and the Vendors shall have received a certificate from a
                  duly authorized senior officer of the Purchaser confirming the
                  truth and correctness in all material respects of the
                  representations and warranties of the Purchaser contained
                  herein;

         (b)      Performance of Obligations - The Purchaser shall have
                  performed or complied with all of its obligations, covenants
                  and agreements hereunder;

         (c)      Receipt of Closing Documentation - All documentation relating
                  to the due authorization and completion of the sale and
                  purchase hereunder of the Purchased Shares and all actions and
                  proceedings taken on or prior to the Closing in connection
                  with the performance by the Purchaser of its obligations under
                  this Agreement shall be reasonably satisfactory to the Vendors
                  and the Vendors shall have received copies of all such
                  documentation or other evidence as they may reasonably request
                  in order to establish the consummation of the transactions
                  contemplated hereby and the taking of all corporate
                  proceedings in connection therewith in compliance with these
                  conditions, in form (as to certification and otherwise) and
                  substance satisfactory to the Vendors;

         (d)      Release of Vendors' Guaranties - Purchaser shall have secured
                  the release of Vendors from liability for any personal
                  guarantees issued by Vendors as the shareholders of the
                  Company with respect to any liability of the Company for
                  borrowed money, and shall have provided to Vendors written
                  evidence thereof, or, in the alternative, Purchaser shall
                  deliver an agreement of assumption and indemnification, in
                  form and content mutually satisfactory to Purchaser and
                  Vendors, pursuant to which Purchaser will indemnify Vendors
                  for any such personal guaranty;

                                       21
<PAGE>   22
         (e)      Litigation - On the Closing Date, there shall be no
                  litigation, governmental investigation or proceeding pending
                  or threatened for the purpose of enjoining or preventing the
                  consummation of any of the transactions contemplated by this
                  Agreement or otherwise claiming that such consummation is
                  improper;

         (f)      Hart-Scott-Rodino Filing - The applicable waiting period under
                  the Hart Act shall have expired or terminated;

         (g)      Management - The Board of Directors of Rural/Metro shall have
                  confirmed the appointment of Ramsey to the Board of Directors
                  of Rural/Metro and to a senior executive position with
                  Rural/Metro and approved certain existing management contracts
                  of the Company;

         (h)      Investment Agreement - Purchaser shall have executed and
                  delivered to Vendors an Investment Agreement in form and
                  content substantially as attached hereto as Appendix 4.1(j).

         (i)      Simultaneous Closings - On the Closing Date, the share
                  purchases and other transactions contemplated in each of the
                  Agreements of Purchase and Sale executed of even date herewith
                  for the sale of Southwest Ambulance of Casa Grande, Inc.,
                  Medical Emergency Devices and Services ("MEDS"), Inc., and
                  Southwest General Services, Inc. shall be consummated
                  simultaneously with the transactions contemplated herein.

                                    ARTICLE 5

                         OTHER COVENANTS OF THE PARTIES

5.1 CONDUCT OF BUSINESS PRIOR TO CLOSING - During the period from the date of
this Agreement to the Closing Time, the Vendors will have the following
obligations and will cause the Company to do the following:

         (a)      Access to Records - Vendors shall, and shall cause the Company
                  and its employees, officers, agents, representatives and
                  accountants to, fully cooperate with Purchaser to allow the
                  officers, employees, attorneys, consultants and accountants of
                  Purchaser free and unrestricted access (but only through Barry
                  Landon, as representative of the Vendors and without
                  interference to the ordinary conduct of the Business) during
                  normal business hours to all of the properties, books,
                  contracts, documents and records of the Company and furnish to
                  Purchaser such information as Purchaser may at any time and
                  from time to time reasonably request until the Closing Time.

         (b)      Business in Ordinary Course - Vendors shall cause the Company
                  to carry on its business and affairs as heretofore carried on,
                  and neither the Company nor any Vendor will order, purchase or
                  lease any products, inventory, equipment, leased personalty,
                  or other items, or dispose of any of its assets or leased
                  property, or issue any quotations, or prepay any of its
                  material obligations, incur any liabilities

                                       22
<PAGE>   23
                  or obligations, hire or discharge any employee or officer or,
                  without limitation by specific enumeration of the foregoing,
                  enter into any other transaction, except in the usual and
                  ordinary course of its business in accordance with the past
                  practices of the Company and except as provided herein.
                  Without limiting the generality of the foregoing, Vendors
                  shall not permit the Company, without the prior written
                  consent of Purchaser, to:

                  (i)       create or suffer to exist any liens or encumbrances
                            with respect to any of the assets or properties of
                            the Company which shall not be discharged at or
                            prior to the Closing Date, other than liens for
                            nondelinquent taxes;

                  (ii)      incur any indebtedness for borrowed money other than
                            borrowings under the Company's existing Revolving
                            Credit Line with First National Bank of Arizona,
                            which borrowings shall be in the usual and ordinary
                            course of its business and the balance of which
                            shall not exceed $2,045,000 in the aggregate as at
                            the Closing Time;

                  (iii)     sell or transfer any material assets or properties
                            (including, without limitation, sales and transfers
                            to Affiliates, other than Affiliates of the Company
                            the stock of which is to be acquired by Purchaser or
                            an Affiliate of Purchaser on the Closing Date);

                  (iv)      acquire or enter into any agreement or understanding
                            (oral or written) to acquire the stock or assets of
                            any other person, firm, corporation or other entity;

                  (v)       make any material change in the conduct or nature of
                            any aspect of its business, whether in the ordinary
                            course of business or not, or whether or not the
                            change has or will have a material adverse affect on
                            the business activities, financial condition, or
                            business prospects of the Company;

                  (vi)      waive any material rights;

                  (vii)     pay any Affiliate, other than Affiliates of the
                            Company the stock of which is to be acquired by
                            Purchaser or an Affiliate of Purchaser on the
                            Closing Date, or be charged by any Affiliate, other
                            than Affiliates of the Company the stock of which is
                            to be acquired by Purchaser or an Affiliate of
                            Purchaser on the Closing Date, for goods sold or
                            services rendered or be charged by any Affiliate,
                            other than Affiliates of the Company the stock of
                            which is to be acquired by Purchaser or an Affiliate
                            of Purchaser on the Closing Date, for corporate
                            overhead expenses, management fees, legal or
                            accounting fees, capital charges, or similar charges
                            or expenses, except for any payments made by the
                            Company pursuant to leases with NRM Properties, Inc.
                            or Chaparral Properties, Inc.;

                                       23
<PAGE>   24
                  (viii)    incur or commit to incur any individual capital
                            expenditures except in the ordinary course of its
                            business;

                  (ix)      amend employment contracts or the terms and
                            conditions of employment of any officer, director or
                            employee earning total annual compensation in excess
                            of $70,000, other than normal merit and cost of
                            living increases to employees in accordance with the
                            general prevailing practices of the Company existing
                            prior to the date of this Agreement;

                  (x)       pay or incur any management or consulting fees;

                  (xi)      hire any employee who shall have an annual salary in
                            excess of $70,000;

                  (xii)     enter into any transaction other than in the usual
                            and ordinary course of business; or

                  (xiii)    issue or sell any shares of the stock or other
                            securities of the Company, including any of the
                            Purchased Shares, or make or become obligated to
                            make any dividend or other distribution or payment
                            to Vendors or any former shareholder of the Company
                            in respect of any stock or other security of the
                            Company at any time held by Vendor or such other
                            former shareholders.

         (c)      Employees - Vendors shall use their reasonable efforts to
                  retain, and shall cause the Company to each retain its
                  business intact, preserve all its goodwill and customer and
                  employee relations, including keeping available the services
                  of each of its present employees, representatives and agents.

         (d)      Continue Insurance - Vendors shall cause the Company to
                  continue in force all existing policies of insurance presently
                  maintained by the Company.

         (e)      Perform Obligations - Vendors shall cause the Company to
                  comply in all material respects with all laws affecting the
                  operation of the Business and to pay all required taxes and
                  tax installments.

         (f)      Confidentiality - Until the Closing, and at all times
                  thereafter as provided in Section 6.1(d) hereof, Vendors will
                  maintain as confidential their discussions with Purchaser, and
                  the terms and conditions of this Agreement, and the other
                  agreements to be executed in connection herewith, and except
                  as reasonably necessary to fulfill Vendors' obligations
                  hereunder or as required by law, will not make any trade press
                  or other announcement or disclosure in relation to such
                  discussions whether before or after Closing without the prior
                  written consent of Purchaser.

         (g)      Exclusivity - Until the earlier of the Closing or the
                  termination of this Agreement in accordance with the terms
                  hereof, Vendors will negotiate the sale of the stock, assets
                  and properties of the Company only with Purchaser, and no
                  Vendor will permit the Company to, directly or indirectly,
                  enter into any discussion with, or

                                       24
<PAGE>   25
                  disclose any information in relation to the Purchased Shares
                  or the assets of the Company to any other person, firm, or
                  other entity, other than Purchaser.

         (h)      Equitable Relief - Each Vendor acknowledges and agrees that
                  the covenants contained in each of paragraphs (f) and (g) of
                  this Section 5.1 are a material inducement for Purchaser to
                  execute and deliver this Agreement and to consummate the
                  transactions contemplated hereby. Accordingly, Vendor acknowl-
                  edges and agrees that the restrictions contained in each of
                  paragraphs (f) and (g) of this Section 5.1 are reasonable and
                  necessary for the protection of the business of Purchaser and
                  its subsidiaries, the Company, and the investment of Purchaser
                  in the Company, and that a breach of any such restriction
                  could not adequately be compensated by damages in an action at
                  law. In the event of a breach or threatened breach by any
                  Vendor of any of the provisions of any of paragraphs (f) or
                  (g) of this Section 5.1, Purchaser shall be entitled to
                  obtain, without the necessity of posting bond therefor, an
                  injunction (preliminary or permanent, or a temporary
                  restraining order) restraining such Vendor from the activity
                  or threatened activity constituting, or which would
                  constitute, a breach, as well as damages and an equitable
                  accounting of all earnings, profits and other benefits arising
                  from a violation, which right shall be cumulative and in
                  addition to any other rights or remedies to which Purchaser
                  may be entitled.

         (i)      Severability - Each and every provision set forth in each of
                  paragraphs (f) and (g) of this Section 5.1 is independent and
                  severable from the others, and no provision shall be rendered
                  unenforceable by virtue of the fact that, for any reason, any
                  other or others of them may be unenforceable in whole or in
                  part. The parties hereto agree that if any provision of
                  paragraphs (f) or (g) of this Section 5.1 shall be declared by
                  a court of competent jurisdiction to be unenforceable for any
                  reason whatsoever, the court may appropriately limit or modify
                  such provision, and such provision shall be given effect to
                  the maximum extent permitted by applicable law.

         (j)      Consents - Vendors shall use their reasonable efforts and make
                  every good faith attempt to obtain any and all consents and
                  estoppel letters reasonably requested by Purchaser to or in
                  connection with the assignment of, or alternate arrangements
                  satisfactory to Purchaser with respect to, any contract,
                  lease, license, permit, agreement, or other instrument, which
                  is to be an asset of the Company, or which may be necessary,
                  appropriate, or required in order to permit the conduct of the
                  Business and operations of the Company after the Closing to be
                  in all respects the same as the conduct of the Business and
                  operations of the Company, prior to the Closing.

5.2 OBLIGATIONS OF PURCHASER - During the period from the date of this Agreement
to the Closing Time, or such other period as provided by this Agreement, the
Purchaser will have the following obligations:

         (a)      Confidentiality - Purchaser will maintain as confidential its
                  discussions with Vendors, and the terms and conditions of this
                  Agreement, and the other agree-

                                       25
<PAGE>   26
                  ments to be executed in connection herewith, and except as
                  reasonably necessary to fulfill its obligations hereunder or
                  as required by law, will not make any trade press or other
                  announcement or disclosure in relation to such discussions
                  without the prior written consent of Vendors. In the event of
                  the termination of this Agreement without consummation of the
                  transactions contemplated hereby, Purchaser will keep
                  confidential any information (unless readily available from
                  public or published information sources) obtained from the
                  Company or the Vendors. If this Agreement is so terminated,
                  promptly after such termination, all documents, work papers
                  and other written material obtained from Vendors'
                  representative in connection with this Agreement and not
                  theretofore made public (including all copies thereof), shall
                  be returned to the Person that provided such material.
                  Purchaser shall provide Vendors with a list of representatives
                  of Purchaser involved in the due diligence, and said
                  representatives shall refrain from discussing the transaction
                  and its due diligence activities with any other employee or
                  representative of Purchaser not disclosed on the list.

         (b)      Nonsolicitation - In the event of termination of this
                  Agreement without consummation of the transactions
                  contemplated hereby, Purchaser agrees that for a period of
                  three (3) years following such termination, Purchaser will
                  not, directly or indirectly, solicit or cause others to
                  solicit any person who, on the date hereof, is an employee of
                  the Company and whose annual compensation from the Company
                  exceeds $25,000, for employment or as an independent
                  contractor with any person or entity, unless first authorized
                  in writing by Vendors, which authorization may be withheld in
                  the sole and absolute discretion of Vendors.

         (c)      Trade Secrets and Other Information - In the event of
                  termination of this Agreement without consummation of the
                  transactions contemplated hereby, Purchaser agrees that after
                  the Closing Purchaser will not communicate or divulge to, or
                  use for the benefit of, any person, firm or corporation any of
                  the trade secrets, methods, formulas, business and/or
                  marketing plans, processes or any other proprietary or
                  confidential information with respect to the Company and its
                  business, financial condition, business operations or methods,
                  or business prospects. The preceding sentence shall not apply
                  to information which (i) is, was or becomes generally known or
                  available to the public or the industry other than as a result
                  of a disclosure by Purchaser in violation of this Agreement,
                  or (ii) is required to be disclosed by law. Purchaser will
                  advise Vendors, in writing, of any request, including a
                  subpoena or similar legal inquiry, to disclose any such
                  confidential information, such that Vendors can seek
                  appropriate legal relief.

         (d)      Equitable Relief - Purchasers acknowledge that the covenants
                  contained in each of paragraphs (a), (b), and (c) of this
                  Section 5.2 are a material inducement for Vendors to execute
                  and deliver this Agreement and to consummate the transac-
                  tions contemplated hereby. Accordingly, Purchaser acknowledges
                  and agrees that the restrictions contained in each of
                  paragraphs (a), (b), and (c) of this Section 5.2 are
                  reasonable and necessary for the protection of the business of
                  the Company, and Vendors' investment in the Company, and that
                  a breach of any such restriction could not adequately be
                  compensated by damages in an action at

                                       26
<PAGE>   27
                  law. In the event of a breach or threatened breach by
                  Purchaser of any of the provisions of any of paragraphs (a),
                  (b), or (c) of this Section 5.2, Vendors shall be entitled to
                  obtain, without the necessity of posting bond therefor, an
                  injunction (preliminary or permanent, or a temporary
                  restraining order) restraining Purchaser from the activity or
                  threatened activity constituting, or which would constitute, a
                  breach of this Agreement, as well as damages and an equitable
                  accounting of all earnings, profits and other benefits arising
                  from such a violation, which right shall be cumulative and in
                  addition to any other rights or remedies to which Vendors may
                  be entitled.

         (e)      Severability - Each and every provision set forth in each of
                  paragraphs (a), (b), and (c) this Section 5.2 is independent
                  and severable from the others, and no provision shall be
                  rendered unenforceable by virtue of the fact that, for any
                  reason, any other or others of them may be unenforceable in
                  whole or in part. The parties hereto agree that if any
                  provision of any of paragraphs (a), (b), or (c) of this
                  Section 5.2 shall be declared by a court of competent
                  jurisdiction to be unenforceable for any reason whatsoever,
                  the court may appropriately limit or modify such provision,
                  and such provision shall be given effect to the maximum extent
                  permitted by applicable law.

         (f)      Consents - Purchaser shall use its reasonable efforts and make
                  every good faith attempt to obtain any and all consents and
                  estoppel letters which may be necessary, appropriate, or
                  required in order to permit consummation of the transactions
                  contemplated herein.

5.3 JOINT OBLIGATIONS OF VENDORS AND PURCHASER - During the period from the date
of this Agreement to the Closing Time, the following shall apply with equal
force to Vendors and Purchaser:

         (a)      Notice - Each Party shall promptly give the other parties
                  written notice of the existence or occurrence of any condition
                  that would make any representation or warranty of the
                  notifying Party untrue or that might reasonably be expected to
                  prevent the consummation of the transactions herein
                  contemplated.

         (b)      Performance - No Party shall intentionally perform or omit to
                  perform any act which, if performed or omitted, would prevent
                  or excuse the performance of this Agreement by any Party
                  hereto or that would result in any representation or warranty
                  contained herein of that Party being untrue in any material
                  respect as of the date hereof and as if originally made on and
                  as of the Closing Date.

         (c)      Hart-Scott-Rodino Filings - Each party shall take whatever
                  steps are necessary to make any filings required under the
                  Hart Act not later than ten days after the date of execution
                  of this Agreement.

                                       27
<PAGE>   28
                                    ARTICLE 6

                            POST CLOSING OBLIGATIONS

6.1 OBLIGATIONS OF VENDORS - Following the Closing, Vendors shall each be
subject to the following obligations:

         (a)      Covenant Not to Compete - In consideration of the execution
                  and delivery of this Agreement by Purchaser, and in
                  consideration of the Purchase Price, and as additional
                  consideration therefor, each of the Vendors unconditionally
                  agrees that during the Restricted Period (as defined below) no
                  Vendor will, directly or indirectly (including, without
                  limitation, as a partner, shareholder, director, officer or
                  employee of, or lender or consultant to, any other person or
                  entity), for himself, herself or itself, or on behalf of, or
                  in conjunction with, any other Person or governmental entity,
                  in any manner whatsoever, or in any other capacity within,
                  into or from the Restricted Territory (as defined below)
                  engage or cause others to engage in the Business, or any
                  aspect thereof, unless first authorized in writing by
                  Purchaser, which authorization may be withheld in the sole and
                  absolute discretion of Purchaser. For purposes of this
                  Agreement, the term "Restricted Period" shall mean the period
                  ending three (3) years from the Closing Date. For purposes of
                  this Agreement, the term "Restricted Territory" shall mean the
                  State of Arizona. If any Vendor violates his, her or its
                  obligations under this Section 6.1(a), then the Restricted
                  Period shall be extended by the period of time equal to that
                  period beginning when the activities constituting such
                  violation commenced and ending when the activities
                  constituting such violation terminated. Notwithstanding the
                  foregoing, the obligations of the Vendors under this Section
                  6.1(a) shall terminate if Ramsey is terminated by Purchaser
                  without Cause as defined and described in the Employment
                  Agreement. The Purchaser agrees that no breach of this
                  covenant not to compete will occur as a result of Ramsey's
                  formation of and activities with respect to any 501(c)(3)
                  foundation, his continued association with the International
                  Association of Firefighters, his continued ownership and
                  operation of an ambulance service company in Pima County under
                  the name Kords Southwest, or his continued service as
                  President of the Arizona Ambulance Association.

         (b)      Nonsolicitation - In consideration of the execution and
                  delivery of this Agreement by Purchaser, and in consideration
                  of the Purchase Price, each of the Vendors agrees that for a
                  period of three (3) years following the Closing Date no Vendor
                  will, directly or indirectly, solicit or cause others to
                  solicit, (i) in respect of the Business, any Person or other
                  entity that is, or was within the twelve (12) month period
                  immediately prior to the Closing, a customer or supplier of
                  the Company, or (ii) any person who, on the date hereof, is an
                  employee of the Company and whose annual compensation from the
                  Company exceeds $25,000, for employment or as an independent
                  contractor with any Person or entity, unless first authorized
                  in writing by Purchaser, which authorization may be withheld
                  in the sole and absolute discretion of Purchaser. If any
                  Vendor violates his, her or its obligations under this Section
                  6.1(b), then the time periods hereunder shall be extended by

                                       28
<PAGE>   29
                  the period of time equal to that period beginning when the
                  activities constituting such violation commenced and ending
                  when the activities constituting such violation terminated.
                  Notwithstanding the foregoing, the obligations of the Vendors
                  under this Section 6.1(b) shall terminate if Ramsey is
                  terminated by Purchaser without Cause as defined and described
                  in the Employment Agreement.

         (c)      Trade Secrets and Other Information - In consideration of the
                  execution and delivery of this Agreement by Purchaser, and in
                  consideration of the Purchase Price, each of the Vendors
                  agrees that after the Closing no Vendor will communicate or
                  divulge to, or use for the benefit of, any Person other than
                  Purchaser or the Company, or its or their agents and
                  representatives, any of the trade secrets, methods, formulas,
                  business and/or marketing plans, processes or any other
                  proprietary or confidential information with respect to the
                  Company and its business, financial condition, business
                  operations or methods, or business prospects. The preceding
                  sentence shall not apply to information which (i) is, was or
                  becomes generally known or available to the public or the
                  industry other than as a result of a disclosure by a Vendor in
                  violation of this Agreement, or (ii) is required to be
                  disclosed by law. Vendors will advise Purchaser, in writing,
                  of any request, including a subpoena or similar legal inquiry,
                  to disclose any such confidential information, such that
                  Purchaser can seek appropriate legal relief.

         (d)      Confidentiality - At all times after the Closing, Vendors will
                  maintain as confidential the discussions between Vendors and
                  Purchaser, and the terms and conditions of this Agreement, and
                  the other agreements to be executed in connection herewith,
                  and except as required by law, will not make any trade press
                  or other announcement or disclosure in relation to such
                  discussions whether before or after Closing without the prior
                  written consent of Purchaser.

         (e)      Equitable Relief - Vendors acknowledge that the covenants
                  contained in each of paragraphs (a), (b), (c), and (d) of this
                  Section 6.1 are a material inducement for Purchaser to execute
                  and deliver this Agreement and to consummate the transactions
                  contemplated hereby. Accordingly, Vendors acknowledge and
                  agree that the restrictions contained in each of paragraphs
                  (a), (b), (c), and (d) of this Section 6.1 (including, without
                  limitation, the Restricted Period and the Restricted
                  Territory) are reasonable and necessary for the protection of
                  the business of the Company, and Purchaser's investment in the
                  Company, and that a breach of any such restriction could not
                  adequately be compensated by damages in an action at law. In
                  the event of a breach or threatened breach by any Vendors of
                  any of the provisions of any of paragraphs (a), (b), (c), or
                  (d) of this Section 6.1, Purchaser shall be entitled to
                  obtain, without the necessity of posting bond therefor, an
                  injunction (preliminary or permanent, or a temporary
                  restraining order) restraining that Vendor from the activity
                  or threatened activity constituting, or which would
                  constitute, a breach of this Agreement, as well as damages and
                  an equitable accounting of all earnings, profits and other
                  benefits arising from such a violation, which right shall be
                  cumulative and in addition to any other rights or remedies to
                  which Purchaser may be entitled.

                                       29
<PAGE>   30
         (f)      Severability - Each and every provision set forth in each of
                  paragraphs (a), (b), (c), and (d) this Section 6.1 is
                  independent and severable from the others, and no provision
                  shall be rendered unenforceable by virtue of the fact that,
                  for any reason, any other or others of them may be
                  unenforceable in whole or in part. The parties hereto agree
                  that if any provision of any of paragraphs (a), (b), (c) or
                  (d) of this Section 6.1 shall be declared by a court of
                  competent jurisdiction to be unenforceable for any reason
                  whatsoever, the court may appropriately limit or modify such
                  provision, and such provision shall be given effect to the
                  maximum extent permitted by applicable law.

         (g)      Consents - Vendors shall use their reasonable efforts and make
                  every good faith attempt to obtain any and all consent and
                  estoppel letters, if any, reasonably requested by Purchaser to
                  or in connection with the assignment of, or alternate
                  arrangements satisfactory to Purchaser with respect to, any
                  contract, lease, license, permit, agreement, or other
                  instrument, which is to be an asset of the Company, or which
                  may be necessary, appropriate, or required in order to permit
                  the conduct of the business and operations of the Company
                  after the Closing to be in all respects the same as the
                  conduct of the business and operations of the Company prior to
                  the Closing.

         (h)      Nonpayment of Accounts Receivable - In the event that the
                  Southwest Companies collect from Closing Accounts Receivable
                  (as defined in Section 3.1(ff) hereof) an amount less than the
                  Target Accounts Receivable within 365 calendar days after the
                  Closing Date, Purchaser may, at its option, cause the Company
                  to tender such uncollected Accounts Receivable (the "Unpaid
                  Account(s) Receivable") to Vendors for the immediate payment
                  therefor by Vendors in cash, check, bank check or certified
                  funds, in the face amount or the unpaid portion thereof. If
                  payment is not made as provided herein then, without
                  limitation of any other remedy available to it, Purchaser may
                  offset such unpaid amount against any amount owed by Purchaser
                  to any Vendor under this Agreement, any promissory note issued
                  pursuant hereto, or otherwise. Any Unpaid Accounts Receivable
                  tendered by Purchaser for payment by Vendors pursuant to this
                  Section 6.1(h) shall become, upon payment therefor, the
                  property of Vendors.

6.2 OBLIGATIONS OF PURCHASER - Following the Closing, Purchaser shall be subject
to the following obligations:

         (a)      Tax Amendments - The Purchaser agrees that the Company shall
                  not, and the Purchaser shall not cause the Company to, amend
                  the Company's tax returns for 1995 or earlier without the
                  prior consent of Ramsey. In the event the Company and/or the
                  Purchaser amends such tax returns without Ramsey's consent,
                  the Purchaser agrees to indemnify the Vendors for any
                  liabilities that any of them may occur as a result of any such
                  amendment; provided, however, that Vendors agree jointly and
                  severally to indemnify, defend and hold harmless the Purchaser
                  and the Company for any liabilities, costs, penalties, fines
                  and interest that either of them may incur as the result of
                  any refusal to grant the consent referred to above.

                                       30
<PAGE>   31
         (b)      Trade Name - Purchaser agrees that all ambulance services
                  conducted in Arizona by the Southwest Companies as of the date
                  hereof shall be operated under the trade name "Southwest
                  Ambulance" for a period from and after the Closing of not less
                  than five (5) years. If Purchaser or the Southwest Companies
                  breach this Section 6.2(b), Purchaser or the Southwest
                  Companies shall pay to Ramsey as liquidated damages, and not
                  as a penalty, the amount of $2,000,000, except that no
                  liquidated damages will be payable unless and until the
                  Vendors have provided written notice to the Purchaser or the
                  Southwest Companies of a breach of this Section 6.2(b) and
                  such breach has not been cured within 30 days after such
                  written notice.

         (c)      Non Interference With Leases - Purchaser acknowledges the
                  existence of certain real property leases between the Company
                  and NRM Properties, Inc. and Chaparral Properties, Inc.
                  (collectively the "Landlords"), and agrees not to interfere
                  with such leases and to cause the Company to abide by such
                  leases. In the event that the Company and/or the Purchaser
                  reaches this Agreement, the Purchaser shall pay to the
                  appropriate Landlord the full amount of all unpaid monetary
                  obligations of the Company through the lease period in effect
                  at the time of the Closing and agrees that such remedy is in
                  addition to all other remedies that the Landlords or the
                  Vendors may have at law or in equity.

6.3 OBLIGATIONS OF VENDORS AND PURCHASER - Following the Closing, Vendors and
Purchaser shall execute such further documents, and perform such further acts,
as may be necessary to transfer and convey the Purchased Shares to Purchaser, on
the terms herein contained, and to otherwise comply with the terms of this
Agreement and consummate the transactions herein provided.

                                    ARTICLE 7

                                 INDEMNIFICATION

7.1      INDEMNIFICATION BY VENDORS

         (a)      General - Subject to Section 7.4 hereof, Vendors jointly and
                  severally covenant and agree to defend, indemnify and hold
                  Purchaser and the Company, its and their officers, directors,
                  shareholders and subsidiaries, harmless for, from and against
                  any and all damages, losses, liabilities (absolute and
                  contingent), fines, penalties, costs and expenses (including,
                  without limitation, reasonable counsel fees and costs and
                  expenses incurred in the investigation, defense or settlement
                  of any claim covered by this indemnity) with respect to or
                  arising out of any demand, claim, inquiry, investigation,
                  proceeding, action or cause of action that Purchaser and/or
                  the Company, its and their officers, directors, shareholders
                  and subsidiaries, may suffer or incur by reason of: (a) the
                  inaccuracy of any of the representations or warranties of
                  Vendors contained in this Agreement, or any of the agreements,
                  certificates, documents, exhibits or schedules delivered in
                  connection with this Agreement; (b) the failure to comply
                  with, or the breach or default by any Vendor of any of the
                  covenants, warranties or agreements made

                                       31
<PAGE>   32
                  by that Vendor contained in this Agreement, or any of the
                  agreements, certificates, documents, exhibits or schedules
                  delivered in connection with this Agreement; (c) any pending
                  or threatened litigation, claims, investigations, inquiries,
                  regulatory audits or assessments, or other similar proceedings
                  against Purchaser and/or the Company and/or its or their
                  directors, officers, shareholders, employees, agents or
                  representatives, as well as any future litigation, claims,
                  investigations, inquiries, regulatory audits or assessments,
                  or other similar proceedings against the Purchaser and/or the
                  Company and/or its or their directors, officers, shareholders,
                  employees, agents or representatives that arise from a state
                  of facts existing prior to the Closing, and which are not
                  fully covered and reimbursed by insurance; or (d) any
                  liability or obligation of the Company not reflected, provided
                  for, or adequately reserved against on the balance sheets
                  included in the Financial Statements. Purchaser and/or the
                  Company shall be entitled to offset against any amount owed by
                  Purchaser and/or the Company to Vendors, (or any of them) any
                  amount owed to Purchaser and/or the Company by Vendor, (or any
                  of them) or any of their Affiliates.

         (b)      Environmental - Subject to Section 7.4 hereof, Vendors jointly
                  and severally covenant and agree to defend, indemnify and hold
                  Purchaser and/or the Company, and their officers, directors
                  and shareholders harmless for, from and against any and all
                  damages, losses, liabilities (absolute and contingent), fines,
                  penalties, costs and expenses (including, without limitation,
                  reasonable counsel fees and costs and expenses incurred in the
                  investigation, defense or settlement of any claim covered by
                  this indemnity and costs associated with any environmental
                  assessments and/or remediation expenses) by reason of any
                  inaccuracy of any of the representations or warranties set
                  forth in Section 3.1(cc) hereof, or with respect to or arising
                  out of any demand, claim, inquiry, investigation, proceeding,
                  action, or cause of action brought by any governmental agency
                  or instrumentality or any Person other than Purchaser, which
                  Purchaser and/or the Company, or any of their officers,
                  directors or shareholders may suffer or incur by reason of:

                  (i)       any generation, transportation, storage, treatment
                            or disposal of industrial, toxic or hazardous
                            substances or solid or hazardous wastes occurring on
                            or prior to the Closing Date including, without
                            limitation, any waste or other disposal activities
                            or discharges that occurred at a facility on which
                            any portion of the Company's (or its predecessors')
                            business was conducted, any waste or other disposal
                            activities or discharges that occurred off of any
                            such facility with regard to wastes and other
                            substances generated on such facility, and any waste
                            or other disposal activities or discharges that
                            occurred on real estate at any time whether or not
                            the Company (or its predecessors) owned or leased
                            such real estate at the time such waste or other
                            disposal activities or discharges were engaged in,
                            where the Company or Persons at the direction of the
                            Company performed such waste or other disposal
                            activities or discharges;

                                       32
<PAGE>   33
                  (ii)      any spills, discharges, leaks, emissions,
                            injections, escapes, dumping, or any releases as
                            defined now or in the future under the Comprehensive
                            Environmental Response, Compensation, and Liability
                            Act of 1980, P.L. 96-510, as amended or reauthorized
                            from time to time, or any other similar federal,
                            state or local laws, statutes, rules or regulations,
                            occurring on or prior to the Closing Date,
                            including, but not limited to, both those releases
                            or incidents involving environmental contamination
                            that required notification or reporting to
                            appropriate federal, state or local officials or
                            agencies, or clean-up or remedial activities and
                            those releases or incidents which occurred prior to
                            the effective date of any requirements imposing such
                            notification or reporting obligations or clean-up
                            or remedial activities, but which would have been
                            subject to such obligations if they had occurred
                            subsequent to the effective date of such
                            requirements;

                  (iii)     any discharges to surface waters or groundwaters
                            occurring on or prior to the Closing Date;

                  (iv)      any air emissions occurring on or prior to the
                            Closing Date;

                  (v)       the exposure of and resulting consequences to any
                            persons, including, but not limited to, employees of
                            the Company (or any of its predecessors), to any
                            mineral, chemical or industrial product, raw
                            material intermediate, by-product or waste, or
                            substance created, generated, processed, handled or
                            originating at a facility at which the Company (or
                            any of its predecessors) conducted business on or
                            prior to the Closing Date or otherwise used by the
                            Company (or any of its predecessors) in the conduct
                            of its business;

                  (vi)      any violations by the Company (or any of its
                            predecessors) occurring on or prior to the Closing
                            Date of federal, state or local (A) environmental
                            laws, or (B) occupational or employee health and
                            safety laws;

                  (vii)     any and all actions, failures to act and negligence
                            in monitoring, maintaining and upkeep of on-site
                            storage, treatment and disposal facilities on or
                            prior to the Closing Date;

                  (viii)    any misuse, removal, failure to properly maintain
                            and/or monitor storage tanks on or prior to the
                            Closing Date; or

                  (ix)      any violations, fees, obligations or failures to
                            comply with any and all environmental permit
                            requirements on or prior to the Closing Date.

                                       33
<PAGE>   34
7.2      INDEMNIFICATION BY PURCHASER

         (a)      General - Subject to Section 7.4 hereof, Purchaser covenants
                  and agrees to defend, indemnify and hold each Vendor harmless
                  for, from and against any and all damages, losses, liabilities
                  (absolute and contingent), fines, penalties, costs and
                  expenses (including, without limitation, reasonable counsel
                  fees and costs and expenses incurred in the investigation,
                  defense or settlement of any claim covered by this indemnity)
                  with respect to or arising out of any demand, claim, inquiry,
                  investigation, proceeding, action and/or cause of action that
                  any Vendor may suffer or incur by reason of: (a) the
                  inaccuracy of any of the representations or warranties of
                  Purchaser contained in this Agreement, or any of the
                  agreements, certificates, documents, exhibits or schedules
                  delivered by Purchaser in connection with this Agreement; and
                  (b) the failure to comply with, the breach or the default by
                  Purchaser of any of the covenants, warranties or agreements
                  made by Purchaser in this Agreement, or any of the agreements,
                  certificates, documents, exhibits or schedules delivered by
                  Purchaser in connection with this Agreement.

         (b)      Environmental - Subject to Section 7.4 hereof, Purchaser
                  covenants and agrees to defend, indemnify and hold each Vendor
                  harmless for, from and against any and all damages, losses,
                  liabilities (absolute and contingent), fines, penalties, costs
                  and expenses (including, without limitation, reasonable
                  counsel fees and costs and expenses incurred in the
                  investigation, defense or settlement of any claim covered by
                  this indemnity) with respect to or arising out of any demand,
                  claim, inquiry, investigation, proceeding, action or cause of
                  action brought by any governmental agency or instrumentality
                  or any Person other than Vendors which any Vendor may suffer
                  or incur by reason of:

                  (i)       any generation, transportation, storage, treatment
                            or disposal of industrial, toxic or hazardous
                            substances or solid or hazardous wastes occurring
                            after the Closing Date including, without
                            limitation, any waste or other disposal activities
                            or discharges that occur after the Closing Date at a
                            facility on which any portion of the business of the
                            Company is conducted, any waste or other disposal
                            activities or discharges that occur after the
                            Closing Date off of any such facility with regard to
                            wastes and other substances generated after the
                            Closing Date on such facility, and any waste or
                            other disposal activities or discharges that occur
                            after the Closing Date on real estate owned or
                            leased by the Company, at any time after the Closing
                            Date whether or not the Company owns or leases such
                            real estate at the time such waste or other disposal
                            activities or discharges are engaged in, and
                            whether or not the Company performs such waste or
                            other disposal activities or discharges;

                  (ii)      any spills, discharges, leaks, emissions,
                            injections, escapes, dumping, or any releases as
                            defined now or in the future under the Comprehensive
                            Environmental Response, Compensation, and Liability
                            Act of 1980, P.L. 96-510, as amended or reauthorized
                            from time to time, or any other

                                       34
<PAGE>   35
                            similar federal, state or local laws, statutes,
                            rules or regulations occurring after the Closing
                            Date, including, but not limited to, both those
                            releases or incidents involving environmental
                            contamination which require notification or
                            reporting to appropriate federal, state or local
                            officials or agencies, or clean-up or remedial
                            activities and those releases or incidents which
                            occurred prior to the effective date of any
                            requirements imposing such notification or reporting
                            obligations or clean-up or remedial activities, but
                            which would have been subject to such obligations if
                            they had occurred subsequent to the effective date
                            of such requirements;

                  (iii)     any discharges to surface waters or groundwaters
                            occurring after the Closing Date;

                  (iv)      any air emissions occurring after the Closing Date;

                  (v)       the exposure after the Closing Date of and resulting
                            consequences to any persons, including, but not
                            limited to, employees of Purchaser to any mineral,
                            chemical or industrial product, raw material
                            intermediate, by-product or waste, or substance
                            created, generated, processed, handled or originated
                            after the Closing Date at a facility at which
                            Purchaser, or the Company conducts business after
                            the Closing Date or otherwise used after the Closing
                            Date by Purchaser or the Company in the conduct of
                            its business or contained in or constituting a part
                            of merchandise which is sold by Purchaser or the
                            Company after the Closing Date;

                  (vi)      any violations by Purchaser or the Company occurring
                            after the Closing Date of federal, state or local
                            (A) Environmental Laws, or (B) occupational or
                            employee health and safety laws;

                  (vii)     any and all actions, failures to act and negligence
                            in monitoring, maintaining and upkeep of on-site
                            storage, treatment and disposal facilities after the
                            Closing Date;

                  (viii)    any misuse, removal, failure to properly maintain
                            and/or monitor storage tanks after the Closing Date;
                            and

                  (ix)      any violations, fees, obligations or failure to
                            comply with any and all environmental permit
                            requirements after Closing Date.

7.3 NOTICE AND RIGHT TO DEFEND THIRD-PARTY CLAIMS - Promptly upon receipt of
notice of any claim, demand or assessment or the commencement of any suit,
action or proceeding with respect to which indemnity may be sought pursuant to
this Agreement, the party seeking to be indemnified or held harmless (the
"Indemnitee") shall notify in writing, if possible, within sufficient time to
respond to such claim or answer or otherwise plead in such action (but in any
event within thirty (30) days), the party from whom indemnification is sought
(the "Indemnitor"). In case any claim, demand or assessment shall be asserted,
or suit, action or proceeding

                                       35
<PAGE>   36
commenced against the Indemnitee, the Indemnitor shall be entitled, at the
Indemnitor's expense, to participate therein, and, to the extent that it may
wish, to assume the defense, conduct or settlement thereof, at its own expense,
with counsel satisfactory to the Indemnitee, whose consent to the selection of
counsel shall not be unreasonably withheld or delayed, provided that the
Indemnitor confirms to the Indemnitee that it is a claim to which Indemnitee's
rights of indemnification apply. The Indemnitor shall have the right to settle
or compromise monetary claims; however, as to any other claim, the Indemnitor
shall first obtain the prior written consent from the Indemnitee, which consent
shall be exercised in the sole discretion of the Indemnitee. After notice from
the Indemnitor to the Indemnitee of Indemnitor's intent so to assume the
defense, conduct, settlement or compromise of such action, the Indemnitor shall
not be liable to the Indemnitee for any legal or other expenses (including,
without limitation, settlement costs) subsequently incurred by the Indemnitee in
connection with the defense, conduct, settlement or compromise of such action
while the Indemnitor is diligently defending, conducting, settling or
compromising such action. The Indemnitor shall be afforded at least thirty (30)
days, at its sole cost and expense, to resist, defend and compromise any claim
for which indemnification is sought. The Indemnitor shall keep the Indemnitee
promptly apprised of the status of the suit, action or proceeding and shall make
Indemnitor's counsel available to the Indemnitee, at the Indemnitor's expense,
upon the request of the Indemnitee. The Indemnitee shall reasonably cooperate
with the Indemnitor in connection with any such claim and shall make personnel,
books and records and other information relevant to the claim available to the
Indemnitor during normal business hours to the extent that such personnel, books
and records and other information are in the possession and/or control of the
Indemnitee. If the Indemnitor decides not to participate, the Indemnitee shall
be entitled, at the Indemnitor's expense, to defend, conduct, settle and/or
compromise such matter with counsel satisfactory to the Indemnitor, whose
consent to the selection of counsel shall not be unreasonably withheld or
delayed.

7.4 SURVIVAL OF OBLIGATIONS - The liability of Vendors and Purchaser for
indemnification pursuant to this Article 7 shall (i) survive until terminated by
the applicable statute of limitations as to matters relating to: (a) ownership
and title to any of the assets of the Company; (b) ownership and title to the
capital stock of the Company; (c) competency to execute and deliver documents to
effect the transactions contemplated thereby and hereby, and the legal, binding
and enforceable nature thereof and hereof; (d) the environment; and (e) taxes;
(ii) expire three (3) years from the Closing Date with respect to claims not
made prior thereto relating to any price or reimbursement adjustment under any
contract or arrangement with the United States Government, any state government,
or any insurer or healthcare provider organization involving any liability,
claim and/or fraud with respect to billings or reimbursement under either
Medicare or Medicaid for services provided by the Company prior to the Closing
Date (collectively, a "Third Party Claim"); and (iii) expire two (2) years from
the Closing Date with respect to claims not made prior thereto relating to all
other matters not referenced in this Section 7.4. This Section in no way limits
any claims that an Indemnitee may have against an Indemnitor for fraud or for
the breach of any direct covenant made by the Indemnitor to the Indemnitee
contained in this Agreement or the other agreements delivered in connection
therewith.

7.5 INDEMNIFICATION THRESHOLD FOR THIRD PARTY CLAIMS - Purchaser shall not be
entitled to indemnification pursuant to this Agreement with respect to any Third
Party Claim (as defined in Section 7.4 hereof) until the total amount for which
Purchaser shall be entitled to such indemnification, including any
indemnification owing to Purchaser arising from Third Party

                                       36
<PAGE>   37
Claims against any one or more of the other Southwest Companies, but for this
Section 7.5, exceeds Fifty Thousand Dollars ($50,000) in the aggregate;
provided, however, that once such amount exceeds Fifty Thousand Dollars
($50,000), then in that event, Purchaser shall be entitled to indemnification
for the total amount for which indemnification may be owing, less the first
Fifty Thousand Dollars ($50,000). Such indemnification threshold will be
increased in an amount equal to the amount by which the Closing Accounts
Receivable actually collected by the Southwest Companies during the Collection
Period exceeds the Target Accounts Receivable. Nothing contained in this Section
7.5 shall in any manner constitute or be deemed to limit any claim by Purchaser
arising out of a claim of fraud.

                                    ARTICLE 8

                                   TERMINATION

8.1 RIGHT TO TERMINATE - Notwithstanding anything to the contrary contained
herein, this Agreement and the transactions contemplated hereby may be
terminated at any time prior to the Closing: (a) by Purchaser if the conditions
precedent set forth in Section 4.1 are not satisfied or waived in writing by
Purchaser; or (b) by Vendors if the conditions precedent set forth in Section
4.2 are not satisfied or waived in writing by Vendors. In addition, this
Agreement shall terminate if the Closing has not occurred by April 15, 1997,
unless extended by written agreement of the Parties hereto.

8.2 RIGHT TO DAMAGES - Except as otherwise provided in this Agreement, if this
Agreement is terminated, no party hereto shall have any liability or obligation
to the other; provided, however, that Vendors agree to pay the Purchaser, as
liquidated damages, and not as a penalty, the sum of $2,000,000 in cash, bank or
wire transfer of immediately available funds in the event Vendors breach any of
the restrictive covenants contained in paragraphs (f) or (g) of Section 5.1 of
this Agreement or of any of the other Agreements of Purchase and Sale of even
date herewith pertaining to the other Southwest Companies.

                                    ARTICLE 9

                                     GENERAL

9.1 DISCLOSURE SCHEDULES - The Schedules referred to in Section 3.1 and Section
3.2 of this Agreement reflect information supplied to Purchaser and Vendors,
respectively, in the course of their investigation of the Company and Purchaser,
respectively. Vendors may supplement or amend any Schedule from time to time
prior to or at the Closing, by notice in accordance with the terms of this
Agreement, including by delivering one or more supplements or amendments to
correct any matter which would constitute a breach of any representation or
warranty contained herein. All references to any Schedule hereto which is
supplemented or amended as provided in this Section 9.1 shall, for all purposes,
whether or not the transactions contemplated hereby occur, be deemed to be a
reference to such Schedule as so supplemented or amended.

9.2 PUBLIC NOTICES - All public notices to third parties and all other publicity
concerning the transactions contemplated by this Agreement shall be jointly
planned and coordinated by the

                                       37
<PAGE>   38
Vendors and the Purchaser and no Party shall act unilaterally in this regard
without the prior approval of the Vendors and the Purchaser or the other of
them.

9.3 EXPENSES - The expenses incurred by each party hereto in connection with
this Agreement and the transactions provided herein shall be borne by such
party. Notwithstanding the foregoing, all professional fees incurred by the
Vendors in connection with the transactions contemplated by this Agreement shall
be borne by the Vendors and all expenses incurred in connection with the
preparation of any environmental reports after the date of execution of this
Agreement with respect to the real property owned or leased by the Company shall
be borne by the Purchaser (which reports shall remain the property of the
Purchaser following the Closing).

9.4 TIME - Time shall be of the essence hereof.

9.5 NOTICES - Any notice, direction or other document required or permitted to
be given hereunder or for the purposes hereof (hereinafter in this Section 9.5
called a "notice") to any Party shall be in writing and shall be sufficiently
given if delivered personally, or if sent by prepaid registered mail or if
transmitted by telex, facsimile or other form of recorded communication tested
prior to transmission to such Party:

         (a)      in the case of a notice to the Vendors to:

                            Robert E. Ramsey, Jr.
                            222 Main Street East
                            Mesa, Arizona 85201

                  with a copy to the Vendors' Counsel at

                            Gallagher & Kennedy, P.A.
                            2600 North Central Avenue
                            Phoenix, AZ 85004-3020
                            Attention: Terence W. Thompson, Esq.
                            with a facsimile number of (602) 257-9459.

         (b)      in the case of a notice to the Purchaser at

                            8401 E. Indian School Road
                            Scottsdale, Arizona  85251
                            Attention:  Warren S. Rustand
                            with a facsimile number of (602) 481-3328

                                       38
<PAGE>   39
                  with a copy to Purchaser's Counsel at

                            O'Connor Cavanagh Anderson
                            Killingsworth & Beshears, P.A.
                            One E. Camelback Road, Suite 1100
                            Phoenix, Arizona  85012
                            Attention:  John B. Furman, Esq.
                            with a facsimile number of (602) 263-2900

or at such other address as the Party to whom such writing is to be given shall
have last notified the Party giving the same in the manner provided in this
section. Any notice delivered in person to the Party to whom it is addressed as
hereinbefore provided shall be deemed to have been given and received on the day
it is so delivered at such address, provided that if such day is not a Business
Day then the notice shall be deemed to have been given and received on the first
Business Day next following such day. Any notice mailed as aforesaid shall be
deemed to have been given and received on the seventh Business Day following the
date of its mailing. Any notice transmitted by telex, facsimile or other form of
recorded communication shall be deemed given and received on the Business Day of
its transmission.

9.6 ASSIGNMENT - Neither this Agreement nor any rights or obligations hereunder
shall be assignable by any Party without the prior written consent of the other
Party hereto; provided, however, that the Vendors shall be entitled to assign
their rights to receive payments hereunder (or under any related documents) to
any person without the consent of the Purchaser. Subject thereto, this Agreement
shall enure to the benefit of and be binding upon the Parties and their
respective heirs, executors, administrators and successors (including any
successor by reason of amalgamation of the Purchaser) and permitted assigns.

9.7 FURTHER ASSURANCES - The Parties hereto shall with reasonable diligence do
all such things and provide all such reasonable assurances as may be required to
consummate the transactions contemplated hereby, and each Party shall provide
such further documents or instruments required by any other Party as may be
reasonably necessary or desirable to effect the purpose of this Agreement and
carry out its provisions, whether before or after the Closing.

9.8 SEVERABILITY - If any covenant or provision of this Agreement (other than
the provisions pertaining to payments to be made to the Vendors) is prohibited
in whole or in part in any jurisdiction, such covenant or provision shall, as to
such jurisdiction, be ineffective to the extent of such prohibition without
invalidating the remaining covenants and provisions hereof and shall, as to such
jurisdiction, be deemed to be severed from this Agreement to the extent of such
prohibition.

9.9 COUNTERPARTS - This Agreement may be executed by the Parties in separate
counterparts (and by facsimile transmission) each of which when so executed and
transmitted or delivered shall be an original, but all such counterparts shall
together constitute one and the same instrument.

9.10 MEDIATION AND ARBITRATION - Any dispute, controversy or claim (including
without limitation tort claims, requests for provisional remedies or other
interim relief, and issues as to

                                       39
<PAGE>   40
the arbitrability of any matter) arising out of or relating to this Agreement,
or breach thereof, (a) shall be settled by negotiation at a meeting between the
Vendors and the chief executive officer of the Purchaser held in Phoenix,
Arizona within 5 days after notice given by any party hereto to the other
parties hereto, and (b) if within that 5 day period settlement cannot be
achieved through negotiation, it shall be settled (i) first, by the parties
trying in good faith to settle the dispute by mediation under the Commercial
Mediation Rules of the American Arbitration Association ("AAA") (such mediation
session to be held in Phoenix, Arizona and to commence with 10 days of the
appointment of the mediator by the AAA), and (ii) if the controversy, claim or
dispute cannot be settled by mediation, then by arbitration administered by the
AAA under its Commercial Arbitration Rules and in accordance with its expedited
hearing procedures (such arbitration to be held in Phoenix, Arizona before a
single arbitrator by the AAA), and judgment on the award rendered by the
arbitrator may be entered in any court having jurisdiction thereof.

9.11 ATTORNEYS' FEES - If any action is necessary to enforce the terms of this
Agreement, the prevailing party shall be entitled to recover from the other
party all costs, expenses and fees incurred by the prevailing party (including
reasonable attorneys' fees, costs and disbursements) in addition to other relief
to which the prevailing party may be entitled.

     IN WITNESS WHEREOF, the Parties have set their hand this 25th day of
February, 1997, through our trust in God and our service to others. . . . for
life.

                             Rural/Metro Corporation, a Delaware corporation


                             By:_______________________________________________
                                      James H. Bolin, President


                             __________________________________________________
                             Robert E. Ramsey, Jr., individually


                             __________________________________________________
                             Barry Landon, as trustee of the ESOP

                                       40
<PAGE>   41
                                CONSENT OF SPOUSE

                  The undersigned spouse of Robert E. Ramsey, Jr., who is a
party to the above Agreement of Purchase and Sale, pertaining to the sale of the
stock of SW General, Inc., an Arizona corporation (the "Agreement"), hereby
declares, contemporaneously with the execution of the Agreement, that she has
read the Agreement in its entirety, and being fully convinced of the wisdom and
equity of the terms of the Agreement, and in consideration of the premises and
of the provisions of the Agreement, hereby expresses her consent to the
execution and consummation of the Agreement by Robert E. Ramsey, Jr.

                  The undersigned further agrees that in the event of the death
of Robert E. Ramsey, Jr., the dissolution of their marriage, or any occurrence
contemplated by the Agreement that gives rise to any liability or obligation of
Robert E. Ramsey, Jr., the provisions of the Agreement shall be binding upon her
to the extent of any community property she may now have or hereafter acquire,
and any and all separate property that she may hereafter possess which arises
(directly or indirectly) from any consideration given to Robert E. Ramsey, Jr.
pursuant to the Agreement or any agreement executed in connection thereto.

                  The undersigned further agrees that she will, at any and all
times, make, execute and deliver such instruments and documents as may be
reasonably necessary to carry out the provisions of the Agreement, provided that
no such documents require the incurring of any liabilities in excess of that
already provided in the Agreement.

                  Dated this 25th day of February, 1997.




                                       ________________________________________
                                       Virginia (Jenny) L. Norton
<PAGE>   42
                                   APPENDIX J

                           (i) All real property leased by the Company from NRM
Properties, Inc. or Chaparral Properties, Inc. (the "Leased Properties") is set
forth in Schedule "J" and is zoned as set forth on Schedule "J", pursuant to the
ordinances of the applicable cities, towns, villages or townships identified on
such Schedule "J", and is not located in an area that has been identified by the
Secretary of Housing and Urban Development as an area of special flood hazard.
The uses to which such real property are presently put do not violate or
conflict with the applicable provisions of such zoning ordinances, or other
zoning laws of such cities, towns, villages or townships or any other
governmental body.

                           (ii) The Company does not sublease any of its Leased
Properties. The Company does not lease any of its owned real property.

                           (iii) Neither the Company nor any Vendor, nor any one
or more of them, has retained or engaged any real estate broker, commission
agent or other person who is or may be entitled to payment of a commission or
finder's fee or other compensation in connection with any of the Leased
Properties.

                           (iv) As to the Leased Properties, the present use and
operation of the real property is authorized by and in compliance with all
applicable building, fire, health, labor and safety laws, ordinances, rules and
regulations applicable to the real property, including, without limitation,
OSHA, and the Americans with Disabilities Act, and there is no litigation,
action, proceeding or any present plan or study by any governmental authority or
any private person or entity which in any way would affect the present use and
operation of the real property. There are in existence all licenses, permits and
approvals that are required for the use and operation of the Leased Properties,
and no Vendor has any reason to believe that any of the same are in jeopardy of
being revoked or not being reissued upon expiration.

                           (v) No Vendor has any knowledge of any fact or
condition existing which would result or could result in the termination or
reduction of the current access from the Leased Properties to existing public
roads and highways, or of any reduction in sewer or other utility services
presently serving the Leased Properties. Leased Properties have direct access to
dedicated roads and highways and all utility services to the Leased Properties
are furnished through dedicated or perpetual easements.

                           (vi) As to the Leased Properties, no Vendor has
received notice from any insurance company of any defects or inadequacies in
such real property or any part thereof which would materially and adversely
affect the insurability of the real property or the premiums for the insurance
thereof.

                           (vii) As to the Leased Properties, no Vendor has
failed to disclose any material conditions of disrepair or other adverse
conditions or defects with respect to such

                                  Appendix J-1
<PAGE>   43
real property or any portion thereof of which that Vendor has knowledge or
which, with the exercise of reasonable diligence, that Vendor should have known.

                           (viii) As to the Leased Properties, no Vendor has any
knowledge of any planned public improvement which might result in a special
assessment levied against such real property. If any Vendor becomes aware of any
of the foregoing (whether arising before or after the date hereof) after the
date hereof, but prior to Closing, that Vendor shall give prompt written notice
thereof to Purchaser prior to Closing.

                                  Appendix J-2
<PAGE>   44
                                   SCHEDULE D

                          FORM OF EMPLOYMENT AGREEMENT


         See attached.
<PAGE>   45
                                 APPENDIX 4.1(j)

                          FORM OF INVESTMENT AGREEMENT

         See attached.
<PAGE>   46
                                                            DRAFT APRIL 18, 1997


                   AMENDMENT TO AGREEMENT OF PURCHASE AND SALE

WHEREAS, RURAL/METRO CORPORATION, a Delaware corporation ("Purchaser"), ROBERT
E. RAMSEY, JR., an individual ("Ramsey"), and BARRY LANDON, AS TRUSTEE of the
Employee Stock Ownership Plan for the benefit of the Company's employees (the
"ESOP") (Ramsey and the ESOP may be hereinafter referred to together as the
"Vendors"), signed that certain Agreement of Purchase and Sale, made as of
February 25, 1997 (the "Agreement"), with respect to the purchase of all the
issued and outstanding shares of the stock of SW GENERAL, INC., an Arizona
corporation (the "Company").

WHEREAS, Purchaser and Vendors desire to extend the Closing Date (as defined in
the Agreement), and amend the Agreement as set forth in this Amendment.

NOW, THEREFORE, in consideration of the premises and the mutual agreements and
covenants herein contained (the adequacy of which consideration as to each of
the parties hereto is hereby mutually admitted), the parties hereto hereby amend
the Agreement as follows:

         1. Section 1.1(e) of the Agreement is hereby modified to read as
follows:

                           "Closing Date" means the earlier of May 30, 1997 or
                           five (5) business days following the satisfaction or
                           waiver of all conditions precedent to the
                           transactions contemplated by this Agreement, or such
                           other date as the Parties may mutually agree in
                           writing;"

         2. The last sentence of Section 8.1 of the Agreement is hereby amended
to read as follows:

                           "In addition, this Agreement shall terminate if the
                           Closing has not occurred by May 30, 1997, unless
                           extended by written agreement of the Parties hereto."

         3. This Amendment shall constitute a written extension as contemplated
by the original Section 8.1 of the Agreement.

         4. The terms and conditions set forth in the letter agreement, dated
April 15, 1997, by and among Purchaser, Bob Ramsey and Barry Landon, Trustee for
the Southwest
<PAGE>   47
ESOP, a copy of which letter agreement is attached hereto as Exhibit A, shall
constitute amendments and supplemental provisions to the Agreement, as
applicable.

         5. This Amendment may be executed by the parties hereto in separate
counterparts (and by facsimile transmission) each of which when so executed and
transmitted or delivered shall be an original, but all such counterparts shall
together constitute one and the same instrument.

         IN WITNESS WHEREOF, the parties hereto have set their hand as of the
15th day of April, 1997, through our trust in God and our service to others ...
for life.

                                        RURAL/METRO CORPORATION, a
                                        Delaware corporation


                                        By:
                                           -----------------------------------
                                             James H. Bolin, President


                                           -----------------------------------
                                           Robert E. Ramsey, Jr., individually



                                           -----------------------------------
                                           Barry Landon, as Trustee of the ESOP

I HEREBY CONSENT TO THE TERMS
OF THIS AMENDMENT as of the 15th day
of April, 1997:


- ---------------------------
Virginia (Jenny) L. Norton




                                        2
<PAGE>   48
               SECOND AMENDMENT TO AGREEMENT OF PURCHASE AND SALE

WHEREAS, RURAL/METRO CORPORATION, a Delaware corporation ("Purchaser"), ROBERT
E. RAMSEY, JR., an individual ("Ramsey"), and BARRY LANDON, AS TRUSTEE of the
Employee Stock Ownership Plan for the benefit of the Company's employees (the
"ESOP") (Ramsey and the ESOP may be hereinafter referred to together as the
"Vendors"), signed that certain Agreement of Purchase and Sale, made as of
February 25, 1997, and that certain Amendment to Agreement of Purchase and Sale,
made as of April 15, 1997 (together, the "Agreement"), with respect to the
purchase of all the issued and outstanding shares of the stock of SW GENERAL,
INC., an Arizona corporation (the "Company"). All defined terms used herein but
not otherwise defined shall have the meaning set forth in the Agreement.

WHEREAS, Purchaser and Vendors desire to extend the Closing Date (as defined in
the Agreement), and amend the Agreement as set forth in this Amendment.

NOW, THEREFORE, in consideration of the premises and the mutual agreements and
covenants herein contained (the adequacy of which consideration as to each of
the parties hereto is hereby mutually admitted), the parties hereto hereby amend
the Agreement as follows:

         1. Section 1.1(e) of the Agreement is hereby modified to read as
follows:

                           "Closing Date" means the earlier of July 31, 1997 or
                           five (5) business days following the satisfaction or
                           waiver of all conditions precedent to the
                           transactions contemplated by this Agreement, or such
                           other date as the Parties may mutually agree in
                           writing;"

         2. The last sentence of Section 8.1 of the Agreement is hereby amended
to read as follows:

                           "In addition, this Agreement shall terminate if the
                           Closing has not occurred by July 31, 1997, unless
                           extended by written agreement of the Parties hereto."

         3. This Second Amendment shall constitute a written extension as
contemplated by the original Section 8.1 of the Agreement.

         4. The terms and conditions set forth in the letter agreement, dated
May 30, 1997, by and among Purchaser, Bob Ramsey and Barry Landon, Trustee for
the Southwest
<PAGE>   49
ESOP, a copy of which letter agreement is attached hereto as Exhibit A (the
"Letter Agreement"), shall constitute amendments and supplemental provisions to
the Agreement, as applicable, subject to the following: Paragraph 5 of the
Letter Agreement shall be interpreted as a $277,000 indemnification threshold
with respect to claims other than Third Party Claims, in the same manner as the
$50,000 indemnification threshold for Third Party Claims in Section 7.5 of the
Agreement of Purchase and Sale regarding SW General, Inc., and the $277,000
indemnification threshold shall be an aggregate threshold against the liability
of the Vendors for indemnification arising from any of the Agreements of
Purchase and Sale pertaining to the Southwest Companies.

         5. This Second Amendment may be executed by the parties hereto in
separate counterparts (and by facsimile transmission) each of which when so
executed and transmitted or delivered shall be an original, but all such
counterparts shall together constitute one and the same instrument.

         IN WITNESS WHEREOF, the parties hereto have set their hand as of the
30th day of May, 1997, through our trust in God and our service to others ...
for life.

                                         RURAL/METRO CORPORATION, a
                                         Delaware corporation


                                         By:
                                            ------------------------------
                                             James H. Bolin, President


                                            ------------------------------
                                            Robert E. Ramsey, Jr., individually



                                            ------------------------------
                                            Barry Landon, as Trustee of the ESOP


I HEREBY CONSENT TO THE TERMS OF THIS SECOND AMENDMENT as of the 30th day of
May, 1997:



- -------------------------------
Virginia (Jenny) L. Norton



                                        2
<PAGE>   50
                THIRD AMENDMENT TO AGREEMENT OF PURCHASE AND SALE


         A. WHEREAS, RURAL/METRO CORPORATION, a Delaware corporation,
("Purchaser"), ROBERT E. RAMSEY, JR., an individual ("Ramsey"), BARRY LANDON, as
trustee of the Employee Stock Ownership Plan for the benefit of SW General,
Inc.'s employees (the "ESOP") (Ramsey and the ESOP may be hereinafter referred
to collectively as the "Vendors"), signed that certain Agreement of Purchase and
Sale, made as of February 25, 1997, that certain Amendment to Agreement of
Purchase and Sale, made as of April 15, 1997, and that certain Second Amendment
to Agreement of Purchaser and Sale, made as of May 30, 1997 (together, the
"Agreement"), with respect to the purchase of all of the issued and outstanding
shares of stock of SW General, Inc., an Arizona corporation (the "Company"). All
defined terms used herein but not otherwise defined shall have the meaning set
forth in the Agreement.

         B. WHEREAS, the Agreement incorrectly states the number of Purchased
Shares owned by Vendors,

         C. WHEREAS, the stock certificates representing the Rural/Metro Stock
were incorrectly issued based on the incorrect number of Purchased Shares (the
"Incorrect Stock Certificates");

         D. WHEREAS, the actual and correct ownership of Purchased Shares is as
set forth below.

         E. WHEREAS, the Incorrect Stock Certificates will be voided and new
stock certificates will be issued to Vendors and reflecting the correct number
of shares of Rural/Metro stock.

         NOW, THEREFORE, in consideration of the premises and the mutual
agreements and covenants herein contained (the adequacy of which consideration
as to each of the parties hereto is hereby mutually admitted), the parties
hereby amend the Agreement:

         1. The correct number of Purchased Shares owned by Vendors is as
follows:

                  Robert E. Ramsey, Jr.                       820,906.53
                  Barry Landon, as Trustee of the ESOP        179,093.47

         2. The Incorrect Stock Certificates shall be returned to Purchaser's
transfer agent and voided.
<PAGE>   51
         3. New stock certificates shall be issued to Vendors representing the
following number of shares of Rural/Metro stock:

                  Robert E. Ramsey, Jr.                       360,701
                  Barry Landon, as Trustee of the ESOP         78,693


         4. Purchaser shall deliver such New Stock Certificates to Vendors upon
Purchaser's receipt thereof from Purchaser's transfer agent and against delivery
from Vendors of the Incorrect Stock Certificates.

         5. This Third Amendment may be executed by the parties hereto in
separate counterparts (and by facsimile transmission) each of which when so
executed and transmitted or delivered shall be an original, but all such
counterparts shall together constitute one and the same instrument.

         IN WITNESS WHEREOF, the parties hereto have set their hand as of the
30th day of June, 1997, through our trust in God and our service to others ...
for life.

WE HEREBY CONSENT TO THE
TERMS OF THIS THIRD
AMENDMENT as of the 30th day
of June, 1997:

RURAL/METRO CORPORATION, a
Delaware corporation




By:
    -----------------------------------
    William R. Crowell, Vice President



    -----------------------------------
    Robert E. Ramsey, Jr.,



    -----------------------------------
    Barry Landon, as Trustee of the
    ESOP





                                        2








<PAGE>   1
                                                                EXHIBIT 10.50
                         AGREEMENT OF PURCHASE AND SALE



         THIS AGREEMENT OF PURCHASE AND SALE ("Agreement") is made as of this
25th day of February, 1997


BETWEEN:

                 Rural/Metro Corporation, a Delaware corporation
                                  ("Purchaser")

                                      -and-

                      Robert E. Ramsey, Jr., an individual
        ("Ramsey", and also referred to herein as "Vendors" and "Vendor")



RECITALS:


         WHEREAS, the Vendor owns and controls all the issued and outstanding
shares of the stock of Southwest Ambulance of Casa Grande, Inc., an Arizona
corporation (the "Company");

         AND WHEREAS, the Vendor desires to sell and the Purchaser desires to
purchase all of the said issued and outstanding shares of the stock of the
Company owned by the Vendor all upon and subject to the terms and conditions
hereinafter set forth;

         NOW THEREFORE, in consideration of the premises and the mutual
agreements and covenants herein contained (the adequacy of which consideration
as to each of the parties hereto is hereby mutually admitted), the parties
hereto hereby covenant and agree as follows:

                                    ARTICLE 1

                  DEFINITIONS AND PRINCIPLES OF INTERPRETATION

1.1 DEFINITIONS - Whenever used in this Agreement, unless there is something in
the subject matter or context inconsistent therewith, the following words and
terms shall have the respective meanings ascribed to them as follows:
<PAGE>   2
         (a)      "Agreement" means this Agreement of Purchase and Sale and all
                  instruments supplemental hereto or in amendment or
                  confirmation hereof;

         (b)      "Business" means the business presently carried on by the
                  Company consisting of the provision of emergency and
                  non-emergency medical transportation services and related
                  billing and management services;

         (c)      "Business Day" means a day other than a Saturday, Sunday or
                  any day on which the principal commercial banks located in
                  Phoenix, Arizona are not open for business during normal
                  banking hours;

         (d)      "Closing" means the completion of the sale to and purchase by
                  the Purchaser of the Purchased Shares hereunder by the
                  transfer and delivery of documents of title thereto and the
                  payment of the purchase price therefore as contemplated
                  herein;

         (e)      "Closing Date" means the earlier of April 15, 1997 or five (5)
                  business days following the satisfaction or waiver of all
                  conditions precedent to this transaction, or such other date
                  as the Parties may mutually agree in writing;

         (f)      "Closing Time" means 10 o'clock a.m., Phoenix, Arizona local
                  time, on the Closing Date, or such other time on the Closing
                  Date as the Parties may agree;

         (g)      "Employment Agreement" means the employment agreement to be
                  entered into by and between Ramsey and Purchaser at the
                  Closing, as contemplated by the Agreement of Purchase and Sale
                  of even date herewith pertaining to SW General, Inc., an
                  Arizona corporation.

         (h)      "Financial Statements" means the unaudited financial
                  statements of the Company, including a balance sheet as of
                  December 31, 1996, and an operating statement for the twelve
                  (12) month period then ended; copies of which are annexed as
                  Schedule "A" hereto;

         (i)      "Parties" means, collectively, the Vendors and the Purchaser,
                  and "Party" means any one of them;

         (j)      "Person" means any individual, corporation, partnership,
                  limited liability company, trust or unincorporated association
                  or similar entity, and pronouns have a similarly extended
                  meaning;

         (k)      "Purchase Price" means the purchase price to be paid by the
                  Purchaser to the Vendors for the Purchased Shares as provided
                  in Section 2.1 hereof;

         (l)      "Purchased Shares" means all the issued and outstanding common
                  shares of the stock of the Company;


                                        2
<PAGE>   3
         (m)      "Southwest Companies" means, collectively, the Company, SW
                  General, Inc., Medical Emergency Devices and Services (MEDS),
                  Inc., and Southwest General Services, Inc.

Terms defined in the preamble, recitals and body of this Agreement shall have
the same meanings herein as are ascribed thereto in the preamble, recitals and
body.

1.2 GENDER AND NUMBER - Words importing the singular include the plural and vice
versa; words importing gender include all genders.

1.3 ENTIRE AGREEMENT - This Agreement, including the Schedules and Exhibits
hereto, together with the agreements, certificates, and other documents and
instruments to be delivered pursuant hereto, constitute the entire agreement
between the Parties pertaining to the subject matter hereof and supersede all
prior agreements, understandings, negotiations and discussions, whether oral or
written, of the Parties and there are no warranties, representations or other
agreements between the Parties in connection with the subject matter hereof
except as specifically set forth herein and therein.

1.4 WAIVERS, ETC. - No supplement, modification, waiver or termination of this
Agreement shall be binding unless executed in writing by the Party to be bound
thereby. No waiver of any of the provisions of this Agreement, in whole or in
part, shall be deemed or shall constitute a waiver of any other provisions
hereof (whether or not similar), nor shall such waiver constitute a continuing
waiver unless otherwise expressly provided.

1.5 OTHER WORDS AND PHRASES - In this Agreement, unless otherwise expressly
provided (i) the words "hereof", "herein", "hereto" and "hereunder" and words of
similar import refer to this Agreement as a whole and not to the particular
Article, Section, Subsection, paragraph or other subdivision, and (ii) all
references to designated "Articles", "Sections", "Subsections", "paragraphs" or
other subdivisions are to the designated Articles, Sections, Subsections,
paragraphs and other subdivisions of this Agreement.

1.6 HEADINGS - The Article and Section headings contained herein are included
solely for convenience of reference, are not intended to be full or accurate
descriptions of the content thereof and shall not be considered part of this
Agreement.

1.7 APPLICABLE LAW - This Agreement and the rights, obligations and relations of
the Parties shall be governed by and construed in accordance with the laws of
the State of Arizona and the federal laws of the United States applicable
therein.

1.8 ACCOUNTING TERMS - All accounting terms shall have the meanings ascribed to
them in accordance with generally accepted accounting principles consistently
applied, and all references to "generally accepted accounting principles" shall
be deemed to be, unless otherwise specified, reference to accounting principles
which are generally accepted in the United States.



                                        3
<PAGE>   4
1.9 SCHEDULES AND APPENDICES - The following are the schedules and appendices
attached to and incorporated in this Agreement by reference and deemed to be an
integral part hereof:

         Schedule "A" -     Financial Statements

         Schedule "B" -     Authorized and Issued Share Capital, Share
                            Ownership, and Purchase Price Allocation for each of
                            the Vendors

         Schedule "C" -     [Intentionally Omitted]

         Schedule "D" -     [Intentionally Omitted]

         Schedule "E" -     Operating Licenses

         Schedule "F" -     Undisclosed Liabilities, Guaranties and Indemnities

         Schedule "G" -     Absence of Changes

         Schedule "H" -     Unusual Transactions

         Schedule "I" -     Liens, Charges and Encumbrances

         Schedule "J" -     Real Property Leases and Owned Real Property

         Schedule "K" -     Vehicular Equipment Owned or Leased

         Schedule "L" -     Revenue Contracts

         Schedule "M" -     Contracts to Purchase Goods/Services

         Schedule "N" -     Employment Contracts, Collective Agreements,
                            Pension or Similar Plans, Unfair Labor Practice
                            Complaints

         Schedule "O" -     Litigation

         Schedule "P" -     Employees over $40,000

         Schedule "Q" -     Insurance Policies

         Schedule "R" -     Intellectual Property

         Schedule "S" -     Third Party Approvals

         Schedule "T" -     Environmental Matters


                                        4
<PAGE>   5
         Schedule "U" -     Subsidiaries and Affiliates

         Schedule "V" -     Bank Accounts

         Schedule "W" -     Purchaser's Disclosure Schedule

         Appendix "J" -     Certain Real Estate Representations and Warranties

         Appendix 4.1(j) -  Investment Agreement


                                    ARTICLE 2

                                PURCHASE AND SALE

2.1 PURCHASE PRICE - At the Closing Time, the Vendors shall sell and the
Purchaser shall purchase the Purchased Shares for an aggregate purchase price of
Thirteen Million, Five Hundred Thousand Dollars ($13,500,000), Five Thousand
Dollars ($5,000) of which shall be paid at Closing in immediately available
funds and Thirteen Million Four Hundred Ninety-Five Thousand Dollars
($13,495,000) of which shall be paid by Purchaser's delivery at Closing to
Vendors of Four Hundred Eight Thousand, Nine Hundred Forty (408,940) shares of
the Common Stock, par value $.01 per share, of Purchaser (the "Rural/Metro
Stock"), all payable and issuable as hereinafter set forth. For purposes of
determining the number of shares of Common Stock of Purchaser to be delivered to
the Vendors as provided in this Section 2.1, the Rural/Metro Stock has a value
of $33.00 per share by agreement of the Parties.


2.2      ACTION BY VENDORS AND PURCHASER AT THE CLOSING TIME -


         (a)      Delivery of Certificates by the Vendors, etc. - The Vendors
                  shall transfer and deliver to the Purchaser at the Closing
                  stock certificates representing all the Purchased Shares duly
                  endorsed in blank for transfer or accompanied by irrevocable
                  stock transfer powers of attorney duly executed in blank, in
                  either case by the holders of record thereof, free and clear
                  of all liens, claims, rights, charges, encumbrances and
                  security interests of whatsoever kind and nature. The Vendors
                  shall take such steps as shall be necessary to cause the
                  Company to enter the Purchaser or its nominee upon the books
                  of the Company as the holder of the Purchased Shares and to
                  issue one or more share certificates to the Purchaser
                  representing the Purchased Shares;

         (b)      Delivery of Certificates by Purchaser, etc. - The Purchaser
                  shall cause to be transferred and delivered to the Vendors at
                  the Closing stock certificates or such other evidence of stock
                  ownership representing the Rural/Metro Stock as duly
                  authorized, validly issued, fully paid and nonassessable,
                  which, at the time of


                                        5
<PAGE>   6
                  delivery by the Purchaser to Vendors, shall be free and clear
                  of all liens, claims, rights, charges, encumbrances and
                  security interests of whatsoever kind and nature. Such
                  Rural/Metro Stock shall be delivered to the Vendors as set
                  forth in Section 2.1. At or prior to the Closing, the
                  Rural/Metro Stock shall have been registered for issuance
                  pursuant to Purchaser's "shelf registration" in effect on the
                  Form S-4 Registration Statement No. 33-95518, or such other
                  appropriate registration statement as determined by Purchaser,
                  filed pursuant to the Securities Act of 1933, as amended (the
                  "Act"). The certificates evidencing the Rural/Metro Stock
                  shall bear the following legend:

                            THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE BEEN
                            ISSUED PURSUANT TO A TRANSACTION SUBJECT TO RULE 145
                            OF THE SECURITIES ACT OF 1933, AS AMENDED (THE
                            "ACT") AND PURSUANT TO EXEMPTIONS FROM REGISTRATION
                            UNDER STATE SECURITIES LAWS. THE SHARES MAY NOT BE
                            OFFERED, SOLD, TRANSFERRED, HYPOTHECATED OR
                            OTHERWISE DISPOSED OF EXCEPT (i) PURSUANT TO AN
                            EFFECTIVE REGISTRATION STATEMENT, (ii) PURSUANT TO
                            THE PROVISIONS OF RULE 145 UNDER THE ACT, OR (iii)
                            PURSUANT TO OTHER EXEMPTIONS FROM REGISTRATION UNDER
                            THE ACT OR ANY APPLICABLE STATE SECURITIES LAWS,
                            WHICH, IN THE OPINION OF COUNSEL SATISFACTORY TO THE
                            CORPORATION, ARE AVAILABLE.

                  As of the Closing, the Rural/Metro Stock shall be traded on
                  The NASDAQ National Market.

         (c)      Payment to Vendors - At the Closing, the Purchaser shall pay
                  to the Vendors the sum of Five Thousand Dollars ($5,000),
                  constituting a portion of the Purchase Price, by wire transfer
                  according to the wire instructions provided to the Purchaser
                  by the Vendors prior to the Closing.

         (d)      Delivery of Other Documents - The Vendors and Purchaser shall
                  deliver all such other documents at the Closing as
                  contemplated herein.


2.3 PAYMENT OF OBLIGATIONS TO VENDORS - At the Closing, Purchaser shall pay by
wire transfer to Vendors the aggregate amount of $969,918.88, and all interest
accrued thereon from February 11, 1997, through the Closing Date, which interest
accrues at the rate of $155.30 per day. This will constitute repayment of all
outstanding principal and accrued interest owed to Ramsey by the Company as of
the Closing Date for outstanding loans.



                                        6
<PAGE>   7
2.4      [INTENTIONALLY OMITTED]

2.5 PLACE OF CLOSING - The Closing shall take place at the Closing Time at the
offices of O'Connor, Cavanagh, Anderson, Killingsworth & Beshears, P.A., One E.
Camelback Road, Suite 1100, Phoenix, Arizona or at such other place as may be
agreed upon by the Vendors and the Purchaser.

2.6 TAX TREATMENT - The acquisition of the Company shall be a purchase of stock
which is intended to be treated as a purchase of assets pursuant to an election
under Section 338(h)(10) of the Internal Revenue Code of 1986, as amended (the
"Code").

                                    ARTICLE 3

                         REPRESENTATIONS AND WARRANTIES

3.1 REPRESENTATIONS AND WARRANTIES OF VENDORS - To induce Purchaser to enter
into this Agreement and to perform its obligations hereunder, and with full
knowledge that Purchaser will rely thereon, the Vendors hereby represent and
warrant, jointly and severally, to the Purchaser the truth, accuracy and
completeness of the following:

         (a)      Enforceability of Obligations - This Agreement and each of the
                  other agreements referenced herein to which one or more
                  Vendors is a party have been duly executed and delivered by
                  each of such Vendors, and each of the Agreement and such other
                  agreements constitutes a valid and binding obligation of each
                  of the Vendors enforceable against each of them in accordance
                  with its terms.

         (b)      Right to Sell - The Vendors:

                  (i)       are the sole beneficial owners of the Purchased
                            Shares (which shares constitute all of the issued
                            and outstanding shares of the stock of the Company);
                            and

                  (ii)      are the holders of record of all the Purchased
                            Shares (which shares constitute all of the issued
                            and outstanding shares of the stock of the Company)
                            and have good and marketable title to, and rightful
                            possession of, all of the Purchased Shares free and
                            clear of any liens, claims, rights, charges,
                            encumbrances, security interests of whatsoever kind
                            and nature or rights of others (other than the
                            rights of the Purchaser hereunder) and no Person
                            (other than the Purchaser hereunder) has any
                            agreement, option or any rights capable of becoming
                            an agreement or option for the acquisition of the
                            Purchased Shares or any other shares in the Company.

         (c)      Licenses, Registrations and Compliance - The Company is
                  registered, licensed or otherwise qualified as a corporation
                  to do business in each jurisdiction in which


                                        7
<PAGE>   8
                  the nature of its business or the property owned or leased by
                  it makes such registration, licensing or other qualification
                  necessary, and such registrations, licenses or qualifications
                  (as the case may be) are in good standing. The Company is not
                  in violation in any material respect of any applicable laws,
                  regulations, orders, rules, decrees, ordinances, licenses or
                  operating authorities. The licenses and operating authorities
                  issued by federal, state or local authorities to the Company,
                  copies of which are attached hereto as Schedule "E" (the
                  "Operating Licenses"), comprise all the material licenses,
                  permits and operating authorities held in respect of the
                  Business. The Operating Licenses are all of the material
                  operating authorities necessary or reasonably required for the
                  carrying on of the Business as presently conducted and the
                  ownership and use of its assets, property, and premises.
                  Except as described in Schedule "E" and subject to applicable
                  regulations and policies of the Arizona Department of Health
                  Services, the Operating Licenses are not subject to review or
                  notification and there is no litigation, arbitration or other
                  proceeding pending or threatened which would materially and
                  adversely affect the use of the Operating Licenses by the
                  Business or which may result in the revocation, cancellation,
                  suspension or any materially adverse modification of any of
                  such Operating Licenses.

         (d)      Organization and Valid Existence - The Company is duly
                  incorporated and organized, validly existing and in good
                  standing under the laws of the State of Arizona, and has all
                  necessary corporate power, authority and capacity to own and
                  lease its property and assets and to carry on the Business as
                  presently conducted by it. Each of the Vendors has the full
                  right, power, authority and capacity to execute and deliver
                  this Agreement and the other agreements referenced herein to
                  which any such Vendor is a party, to consummate the
                  transactions contemplated hereby and thereby, and to fully and
                  timely perform its obligations hereunder and thereunder.

         (e)      Capitalization - The authorized capital stock of the Company
                  and the total number of shares of the Company's capital stock
                  presently issued and outstanding are as set forth on Schedule
                  "B". All issued and outstanding common shares of the Company
                  have been duly authorized and validly issued, are fully paid
                  and non-assessable, and are free of pre-emptive rights.

         (f)      Financial Statements - Copies of the Financial Statements are
                  each true, complete and correct and have been prepared on an
                  accrual basis from the books and records of the Company, in
                  accordance with generally accepted accounting principles
                  applied on a basis consistent with that of the preceding
                  periods. The Financial Statements each fairly present in all
                  material respects a true, accurate and complete statement of
                  the financial condition, assets, liabilities and results of
                  operations of the Company as of the dates and for the periods
                  set forth therein.



                                        8
<PAGE>   9
         (g)      Absence of Undisclosed Liabilities - Except as fully disclosed
                  on Schedule "F" hereto, the Company has no liabilities or
                  obligations, fixed or contingent, accrued or unaccrued that
                  are not fully and properly reflected, or adequately reserved
                  against, on the December 31, 1996 balance sheet of the Company
                  included in the Financial Statements, excepting only those
                  liabilities and obligations incurred by the Company in the
                  ordinary course of its business between the date of such bal-
                  ance sheet and the Closing Date, none of which liabilities is
                  individually or are collectively material, incurred in
                  violation of this Agreement, or would require accrual and/or
                  disclosure under generally accepted accounting principles.

         (h)      Guaranties and Indemnities - Schedule "F" hereto contains a
                  true, complete and correct list of all contracts and
                  agreements pursuant to which the Company has guaranteed or
                  indemnified any debt, liability or obligation of any other
                  person or entity, including, without limitation, any Vendor
                  (including, without limitation, the execution of any document
                  obligating the Company with respect to any performance or
                  other bond), or pursuant to which the Company has pledged or
                  otherwise encumbered any of its assets. Except as disclosed in
                  Schedule "F" hereto, the Company is not indebted to any
                  Vendor, nor is any Vendor indebted to the Company in any
                  amount for any purpose. Except as disclosed in Schedule "F"
                  hereto, the Company has not agreed to give any guaranty of
                  indebtedness or other obligations of third parties or made any
                  other commitment by which the Company is, or is contingently,
                  responsible for such indebtedness or other obligation.

         (i)      Tax Matters - The Company has duly and timely filed all
                  federal, state, county and local income, franchise, capital,
                  sales or use, excise, fuel, escheatment, property or other tax
                  returns, reports or filings required by any law or regulation
                  to be filed by it and has duly paid all taxes, assessments and
                  reassessments, and all other taxes, duties, governmental
                  charges, penalties, interest and fines due and payable by it
                  on or before the date hereof.

                  The federal, state, county and local income tax returns of the
                  Company provided to Purchaser are accurate in all respects.

                  There are no actions, suits, proceedings, inquiries,
                  investigations or claims of any nature or kind whatsoever now
                  pending or, to the best knowledge of Vendors, after due
                  inquiry, threatened, against the Company with respect to any
                  such returns or reports, or any such taxes, or any matters
                  under discussion with any federal, state, county, local or
                  other authority relating to such taxes.

                  The Company has not received from any authority any
                  assessment, reassessment or notice of underpayment of any
                  taxes or other penalty or charges and no such notice is
                  reasonably to be expected.



                                        9
<PAGE>   10
                  There is no misrepresentation that is attributable to wilful
                  default or fraud in tax returns of the Company previously
                  filed.

                  No consents extending or waiving the time limited for
                  reassessment of any taxes, duties, governmental charges,
                  penalties, interest or fines, or any statutes of limitations
                  related thereto have been filed with respect to the Company
                  for any fiscal year.

                  The Company has withheld from each payment made to any of its
                  officers, directors, former directors, and employees and
                  former employees the amount of all taxes and other deductions
                  (including without limitation, income taxes, unemployment,
                  disability, and other required taxes and contributions)
                  required to be withheld and has paid the same together with
                  the employer's share of same, if any (to the extent required
                  to be paid so no such amount is past due), to the proper tax
                  or other receiving officers within the prescribed times and
                  has filed, in complete and accurate form, all information and
                  other returns required pursuant to any applicable legislation
                  within the prescribed times.

                  The provision made for current and deferred taxes included in
                  the Financial Statements is sufficient for the payment of all
                  accrued and unpaid federal, state, county and local income,
                  franchise, capital, sales or use, excise, fuel, escheatment,
                  property or other taxes, assessments and reassessments,
                  duties, governmental charges, penalties, interest and fines
                  of, and payable by, the Company, whether or not disputed, for
                  the period ended the date thereof and for all periods prior
                  thereto.

         (j)      Absence of Changes - Except as disclosed on Schedule "G"
                  hereto, since December 31, 1996 there has not been:

                  (i)       any change in the condition or operations of the
                            business, assets, financial condition, or otherwise
                            of the Company other than changes in the ordinary
                            and normal course of business, none of which has
                            been materially adverse; or

                  (ii)      any damage, destruction or loss, labor trouble or
                            other event, development or condition of any
                            character (whether or not covered by insurance)
                            materially and adversely affecting the business,
                            financial condition, assets, properties or business
                            prospects of the Company.

         (k)      Absence of Unusual Transactions - Except as disclosed on
                  Schedule "H", the Company has not, other than with respect to
                  affiliated entities of the Company being acquired by the
                  Purchaser on the Closing Date, since December 31, 1996:

                  (i)      transferred, assigned, sold or otherwise disposed of
                           any assets, granted a lien, security interest,
                           mortgage or other encumbrance in any assets,


                                       10
<PAGE>   11
                            or cancelled any debts or claims except only in each
                            case in the ordinary and usual course of business or
                            to the extent such assets, liens, security
                            interests, mortgages, encumbrances, debts or claims
                            do not individually or in the aggregate exceed
                            $20,000 (when added to any dispositions, grants, or
                            cancellations by the other Southwest Companies);

                  (ii)      incurred or assumed any obligation or liability
                            which individually or in the aggregate exceeds
                            $100,000 (fixed or contingent), except those listed
                            in Schedule "F" hereto and except unsecured current
                            obligations and liabilities incurred in the ordinary
                            and normal course of business which individually or
                            in the aggregate do not exceed $100,000;

                  (iii)     discharged or satisfied any lien or encumbrance, or
                            paid any obligation or liability (fixed or
                            contingent) other than liabilities included in the
                            Financial Statements and liabilities incurred since
                            the date thereof in the ordinary and normal course
                            of business;

                  (iv)      declared or made any payment of any dividend or
                            other distribution in respect of any shares of its
                            stock as applicable, or purchased or redeemed any
                            such shares thereof, or effected any subdivision,
                            consolidation or reclassification of any such
                            shares;

                  (v)       suffered or been threatened with any material
                            adverse change in its business or financial
                            condition, business activities, or business
                            prospects, including, without limiting the
                            generality of the foregoing, the existence or threat
                            of any labor dispute, or any material adverse change
                            in, or loss of, any material relationship between
                            the Company and any of its customers, suppliers or
                            key employees, or entered into any commitment or
                            transaction not in the ordinary and usual course of
                            business where such commitment or transaction is or
                            would be material in relation to the Company;

                  (vi)      made any general wage or salary increases in respect
                            of personnel which it employs, other than increases
                            in the ordinary and normal course of business, nor
                            hired any employee who shall have an annual salary
                            in excess of $70,000; or

                  (vii)     authorized or agreed or otherwise become committed
                            to do any of the foregoing.

         (l)      Title to Properties - Except as disclosed in Schedules "I" and
                  "J" hereto, the Company has good and marketable title to all
                  its respective properties, interests in properties and assets,
                  real and personal, including without limitation those
                  reflected in the Financial Statements or acquired since the
                  date of the Financial


                                       11
<PAGE>   12
                  Statements, free and clear of all mortgages, pledges, liens,
                  claims, rights, encumbrances or charges of any kind or nature.

         (m)      Equipment and Condition of Assets - All non-vehicular
                  equipment, assets, personal property and fixtures in the
                  possession or custody of the Company which, as of the date
                  hereof, are owned, leased or held under license or similar
                  arrangement by the Company and are necessary for the conduct
                  of the Business are in good condition, repair and proper
                  working order, reasonable wear and tear excepted. Copies of
                  all leases, licenses, agreements and other documentation
                  relating thereto have been provided or made available to
                  Purchaser.

         (n)      Leases of Real Property - The Company is not a party to or
                  bound by any leases of real property other than those
                  disclosed in Schedule "J" hereto, and all interests held by
                  the Company as lessee under such leases are free and clear of
                  any and all liens, charges and encumbrances of any nature and
                  kind whatsoever. All rental and other payments required to be
                  paid by the Company, as lessee, pursuant to such leases have
                  been duly paid. Such leases are in full force and effect
                  without amendment thereto and the Company is not otherwise in
                  default in any material respect in meeting its obligations
                  contained in any such lease. The representations or warranties
                  set forth in Appendix "J" hereto with respect to any real
                  property owned by NRM Properties, Inc. or Chaparral
                  Properties, Inc. that is subject to a lease to which the
                  Company is a party or by which it is bound are true and
                  correct.

         (o)      Real Property - The Company does not own any interest in real
                  property, except as disclosed on Schedule "J" hereto.

         (p)      Vehicular Equipment - Schedule "K" contains a list of all
                  vehicular equipment owned or leased by the Company and copies
                  of all motor vehicle certificates of title with respect to
                  such vehicular equipment have been provided to the Purchaser.
                  Such vehicular equipment is, in all material respects, in good
                  condition, repair and proper working order, reasonable wear
                  and tear excepted, and each vehicle complies in all material
                  respects with all laws and regulations affecting its operation
                  and each vehicle bears a current safety standards certificate.

         (q)      Revenue Contracts - Except as disclosed in Schedule "L", the
                  Company is not a party to any contract pursuant to which it is
                  to provide transportation or other services. Each of the
                  contracts set out in Schedule "L" is in full force and effect
                  and enforceable in accordance with its respective terms and
                  conditions, and there is not existing any default, or event or
                  condition which, with the giving of notice or the passage of
                  time, or both, would constitute an event of default, by the
                  Company or any other party thereto under any of such
                  contracts, that could have a material adverse effect on any of
                  such contracts.


                                       12
<PAGE>   13
         (r)      Contracts to Purchase - Except as set out in Schedule "M", the
                  Company is not a party to any contract to purchase any goods
                  and/or services with a value in excess of $20,000/year. Each
                  of the contracts set out in Schedule "M" is in full force and
                  effect and enforceable in accordance with its respective terms
                  and conditions, and there is not existing any default, or
                  event or condition which, with the giving of notice or the
                  passage of time, or both, would constitute an event of
                  default, by the Company or any other party thereto under any
                  of such contracts, that could have a material adverse effect
                  on any of such contracts.

         (s)      Employment Contracts - Except as set out in Schedule "N", the
                  Company neither has any written employment contracts, union or
                  collective labor, pension, deferred profit sharing,
                  retirement, employee benefit, stock option or other similar
                  agreements or plans nor has it had any such plan or agreement
                  in the past, nor does it have any written contracts of
                  employment with any employees or, to the best of Vendors'
                  knowledge, any oral contracts of employment which are not
                  terminable on the giving of reasonable notice in accordance
                  with applicable law. The Company has not, in the last four (4)
                  years, experienced any labor disputes which were of a material
                  nature, work stoppages or strikes. There is not now any
                  circumstances or conduct which could result in the filing of
                  an unfair labor practice complaint against the Company; any
                  such complaints previously raised and currently ongoing and
                  the current status thereof are particularized in Schedule "N".

         (t)      Material Contracts - Except for the material contracts and
                  commitments disclosed herein, including the Schedules attached
                  hereto, the Company is not a party to or bound by any material
                  contract or commitments whether oral or written. True, correct
                  and complete copies of all such written contracts and
                  commitments either have been delivered to the Purchaser or
                  will be delivered prior to Closing. Each of such contracts and
                  commitments is in full force and effect and enforceable in
                  accordance with its respective terms and conditions, and there
                  is not existing any default, or event or condition which, with
                  the giving of notice or the passage of time, or both, would
                  constitute an event of default, by either of the Company or
                  any other party thereto under any of such contracts or
                  commitments, that could have a material adverse effect on any
                  of such contracts or commitments. The Company has the
                  capacity, including the necessary personnel, equipment and
                  supplies, to perform all its obligations thereunder in all
                  material respects.

         (u)      Pension/Benefit/Health Plans - The only pension, benefit or
                  health plans established by or for the Company for its
                  employees are those disclosed in Schedule "N" hereto; such
                  plans are duly registered where required by, and are in good
                  standing under all, applicable legislation; all required
                  employer contributions thereunder to the date hereof have been
                  made and the respective pension funds are funded in accordance
                  with the rules of the pension plans and no past service
                  funding liabilities exist thereunder. Except as disclosed on


                                       13
<PAGE>   14
                  Schedule "N" hereto, there is no employee benefit or health
                  plan established or maintained for employees of the Company,
                  or to which contributions have been made by the Company with
                  respect to such employees, which is subject to Title IV of the
                  Employee Retirement Income Security Act of 1974, as amended
                  ("ERISA"). The Company is in compliance in all material
                  respects with all provisions of ERISA, and the Company is not
                  subject to any liability or obligation arising under ERISA or
                  any other applicable law or the provisions of any other
                  employee benefit plan, including but not limited to liability
                  owed to the Pension Benefit Guaranty Corporation on account of
                  a termination or partial termination of any employee benefit
                  plan, any liability resulting from a "prohibited transaction",
                  any liability for failure to meet minimum funding
                  requirements, any liability related to the termination of a
                  multi-employer pension plan, and any liability caused by the
                  non-qualification of any plan under section 401 of the Code.
                  No pension plan, no employee benefit plan, no "disqualified
                  person" (as such term is used in Section 4975(c)(1) of the
                  Code) has engaged, and no Vendor has engaged, in any
                  transaction in violation of Section 406 of ERISA or any
                  "prohibited transaction" (as defined in Section 4975(c)(1) of
                  the Code) other than any such transaction which is exempt
                  under Section 408 of ERISA or Section 4975(d) of the Code. The
                  401k plan of the Company meets in all material respects the
                  requirements of section 401(a) of the Code. The Company does
                  not have any obligation to provide material post-retirement
                  benefits of any nature to its employees, former employees or
                  their survivors, dependents or beneficiaries, except as may be
                  required by the Consolidated Omnibus Budget Reconciliation Act
                  of 1986 ("COBRA") or any other applicable state medical
                  benefits continuation laws, nor will any such obligation to
                  provide such post-retirement benefits be incurred solely as a
                  result of the consummation of the within transactions. The
                  Company has not caused there to occur a "mass lay-off", as
                  defined in section 693.3 of the regulations issued under the
                  Worker Adjustment and Retention Notification Act (20 CFR 639)
                  at any time in the past.

         (v)      Absence of Conflicting Agreements - Neither the Company nor
                  any Vendor is a party to, bound or affected by or subject to
                  any indenture, mortgage, lease, agreement, instrument, charter
                  or by-law provision, or, to the best of Vendors' knowledge,
                  any statute, regulation, order, judgment, decree or law which
                  would be in any material respect violated, contravened,
                  breached by or under which a material default would occur, as
                  a result of the execution and delivery of this Agreement or
                  the consummation of any of the transactions provided for
                  herein.

         (w)      Litigation - Except for the items disclosed in Schedule "O"
                  hereto, all of which are fully insured against, there is no
                  suit, action, litigation, arbitration proceeding or private or
                  governmental proceeding, hearing before an administrative
                  tribunal, including appeals and applications for review, in
                  progress, pending or to the knowledge of Vendors threatened
                  against the Company or materially and adversely affecting its
                  properties, business, financial condition or business


                                       14
<PAGE>   15
                  prospects. Except as shown in Schedule "O", there is not
                  presently outstanding against the Company any adverse
                  judgment, decree, injunction, rule or order of any court,
                  governmental department, commission, agency, instrumentality
                  or arbitrator.

         (x)      Employees - There are set forth in Schedule "P" hereto the
                  names and titles of all personnel employed or engaged by the
                  Company whose annual base salary exceeds $40,000, including
                  rates of remuneration, positions held and date of commencement
                  of employment. The employment records of the Company are true,
                  complete and correct in all material respects. Except as
                  disclosed in Schedule "P" hereto, the Company does not owe any
                  past or present employee any sum other than for accrued wages
                  or salaries for the current payroll period, reimbursable
                  expenses, accrued vacation and holiday pay (none of which is
                  for a period in excess of two (2) weeks' pay with respect to
                  any single employee), sick leave rights and amounts payable
                  under employee benefit plans, and all of such sums that accrue
                  from the date hereof until the Closing shall be timely paid by
                  the Company on or prior to the Closing Date. There is not
                  pending or, to the best knowledge of Vendors, after due
                  inquiry, threatened, any charge or complaint against or
                  involving the Company or any of its officers or employees by
                  the National Labor Relations Board, the Occupational Health &
                  Safety Administration, the Department of Labor, or any similar
                  federal, state or local board of agency, or any representative
                  thereof.

         (y)      Insurance - The Company currently has in force the policies of
                  insurance set out in Schedule "Q" hereto. Such policies are
                  appropriate to its Business, property and assets, are in such
                  amounts and against such risks as are customarily carried and
                  insured against by owners of comparable businesses, properties
                  and assets, and, to the knowledge of Vendors, are issued by
                  responsible insurers. All such policies of insurance are in
                  full force and effect and the Company is not in default,
                  whether as to the payment of premium or otherwise, under the
                  terms of any such policy. Such policies can be cancelled
                  without penalty or premium, and such cancellation would
                  trigger a full pro rata refund of prepaid premiums. The
                  Company has no liability for retrospective insurance premiums
                  or costs.

         (z)      Intellectual Property - Attached as Schedule "R" is a true and
                  correct schedule identifying all material patents, patent
                  rights or licenses, patent applications, trademarks, trademark
                  registrations and applications, trademark rights, trade names,
                  trade secrets, service marks and applications therefore,
                  copyrights and copyright registrations and copyright
                  applications used in whole or in part in or required for the
                  proper carrying on of the Business of the Company (the
                  "Intellectual Property"). None of the matters covered by the
                  Intellectual Property, nor any of the products or services
                  sold or provided by the Company, nor any of the processes used
                  or the business practices followed by the Company, infringes
                  or has infringed upon any trademark, trade name, fictitious
                  name,


                                       15
<PAGE>   16
                  service mark, trade secrets, patent or copyright owned by any
                  person or entity (or any application with respect thereto), or
                  constitutes unfair competition. The Company is not obligated
                  to pay any royalty or other payment with respect to any of the
                  Intellectual Property, except as disclosed in Schedule "R".
                  Except as disclosed in Schedule "R" hereto, to the best of
                  Vendors' knowledge, no person or entity is producing,
                  providing, selling or using products, services, names, or
                  marks that would constitute an infringement of any of the
                  Intellectual Property.

         (aa)     Corporate Records - The corporate records and minute books of
                  the Company have been delivered to the Purchaser and contain
                  complete and accurate copies of the Company's Articles of
                  Incorporation, as amended, by-laws, minutes of all meetings,
                  and resolutions of its directors and shareholders. All such
                  meetings were duly called and held, all such by-laws and
                  resolutions were duly passed and the share certificate books,
                  registers of shareholders and members, registers of transfers
                  and registers of directors of the Company are complete and
                  accurate in all material respects. In all material respects,
                  the books and records of the Company with respect to its
                  assets, businesses, operations, properties and prospects have
                  been maintained in accordance with generally accepted
                  accounting principles and in the usual, regular and ordinary
                  manner, and all entries with respect thereto have been made
                  and all transactions have been properly accounted for. All
                  applicable corporate and other laws and all applicable
                  generally accepted accounting principles relating to the
                  maintenance of such books and records have been complied with
                  by the Company.

         (bb)     Third Party Approvals - Except for approvals required by the
                  Federal Trade Commission or other agencies for purposes of
                  complying with the Hart-Scott-Rodino Antitrust Improvements
                  Act of 1976, as amended, and the rules and regulations
                  promulgated thereunder (the "Hart Act") and required by the
                  Arizona Department of Health Services, and except as disclosed
                  in Schedule "S", there are no approvals, consents or waivers
                  required to be obtained or applications required to be filed
                  from or with governmental authorities or from any other Person
                  whatsoever, including pursuant to any leases or contracts
                  containing prohibitions or pre-consent provisions pertinent to
                  this Agreement in order to permit the transactions
                  contemplated herein or to preserve the Business and/or assets
                  of the Company.

         (cc)     Compliance with Environmental Laws - Except as disclosed in
                  Schedule "T" hereto, the Company and the Business are in all
                  material respects in compliance with all, and do not violate
                  in any material respect, and have not violated in any material
                  respect any, applicable federal, state, municipal or local
                  laws, regulations, orders, certificates of approval, licenses,
                  permits, governmental decrees, ordinances or any and all other
                  applicable legislation or regulatory requirements with respect
                  to environmental, health or safety matters. There has been no
                  storage, treatment, generation, discharge, transportation or
                  disposal of


                                       16
<PAGE>   17
                  industrial, toxic or hazardous substances or solid or
                  hazardous waste by, or on behalf of, the Company, in violation
                  of any federal, state or local law, statute, rule or
                  regulation or any decree, order, arbitration award or
                  agreement with or any license or permit from any federal,
                  state or local governmental authority. There has been no
                  spill, discharge, leak, emission, injection, escape, dumping,
                  or release of any kind by, or on behalf of, the Company, into
                  the environment (including, without limitation, into air,
                  water or ground water) of any materials including, without
                  limitation, industrial, toxic or hazardous substances or
                  solid, medical or hazardous waste, as defined under any
                  federal, state or local law, statute, rule or regulation other
                  than those releases permissible under such law, statute, rule
                  or regulation or allowable under applicable permits.

         (dd)     Compliance - The Company is not in violation in any material
                  respect of any laws, regulations, decrees or ordinances
                  applicable to the Business, assets, properties, financial
                  condition or business prospects of the Company.

         (ee)     Subsidiaries and Affiliates - Except as disclosed in Schedule
                  "U" hereto, the Company has no subsidiaries or any other
                  equity investment in any entity engaged in any aspect of the
                  medical or transportation industry. Except as disclosed in
                  Schedule "U" hereto, no Vendor has any equity interest in any
                  "Affiliates." For purposes of this Agreement, the term
                  "Affiliates" shall mean all entities engaged in any aspect of
                  the medical or transportation industry in which the applicable
                  Vendor is either an officer or director, or in which the
                  applicable Vendor, directly or indirectly, owns or controls
                  ten percent (10%) or more of the equity securities of the
                  entity.

         (ff)     Accounts Receivable - The accounts receivable existing on the
                  books of the Southwest Companies at the Closing Time (net of
                  contractual allowance) (the "Closing Accounts Receivable")
                  shall be at least $6,040,000 (the "Minimum Accounts
                  Receivable") and an amount at least equal to the Minimum
                  Accounts Receivable or the Closing Accounts Receivable,
                  whichever amount is greater (the "Target Accounts
                  Receivable"), is good and collectible within 365 calendar days
                  thereafter. None of the Closing Accounts Receivable are
                  subject to the return of the merchandise or other property the
                  selling price of which is represented thereby, or to offsets
                  or counterclaims, the extent of which is in excess of any
                  reserves for collectibility thereof reflected in the books of
                  the Southwest Companies at the Closing.

         (gg)     Bank Accounts - Schedule "V" hereto sets forth the name and
                  location of each bank in which the Company has an account,
                  lock box or safe deposit box, the number of each such account
                  or box, the names of all signatories thereto and the persons
                  authorized to draw thereon or have access thereto. No power of
                  attorney exists from the Company.



                                       17
<PAGE>   18
         (hh)     Accuracy of Documents, Representations and Warranties - The
                  copies of all documents furnished to Purchaser, or any of
                  its representatives by or on behalf of any Vendor or the
                  Company, or any one or more of them, or their representatives,
                  are true, complete and correct in all material respects. No
                  representation or warranty of any Vendor contained in this
                  Agreement or the other agreements to be executed by any Vendor
                  pursuant hereto, and no statement contained in the exhibits,
                  the schedules or the other documents delivered by or on behalf
                  of any Vendor, or his or its representatives pursuant to or in
                  connection with this Agreement or the other agreements to be
                  executed by any Vendor pursuant hereto or any of the
                  transactions contemplated hereby or thereby, contains any
                  untrue statement of a material fact, or omits to state any
                  material fact required to be stated herein or therein in order
                  to make the statements contained herein or therein not
                  misleading.

3.2 REPRESENTATIONS AND WARRANTIES OF THE PURCHASER - To induce the Vendors to
enter into this Agreement and to perform Vendors' obligations hereunder, and
with full knowledge that Vendors will rely thereon, the Purchaser hereby
represents and warrants to the Vendors the truth, accuracy and completeness of
the following, except as disclosed in Schedule "W" hereto:

         (a)      Organization and Valid Existence - The Purchaser is a
                  corporation duly incorporated and organized, validly
                  existing and in good standing under the laws of the State of
                  Delaware and has all necessary corporate power, authority and
                  capacity to execute and deliver the Agreement and the other
                  agreements referenced herein to which the Purchaser is a
                  party, to consummate the transactions contemplated hereby and
                  thereby, and to fully and timely perform its obligations
                  hereunder and thereunder. The execution and delivery by
                  Purchaser of this Agreement and the other agreements
                  referenced herein to which Purchaser is a party, and the
                  consummation of the transactions contemplated hereby and
                  thereby, have been duly authorized and approved by Purchaser's
                  board of directors, and no other corporate proceedings on the
                  part of Purchaser are required to authorize the execution and
                  delivery of this Agreement, the other agreements referenced
                  herein to which Purchaser is a party, or the consummation of
                  the transactions contemplated hereby or thereby.

         (b)      Enforceability - This Agreement and the other agreements
                  referenced herein to which Purchaser is a party have been duly
                  executed and delivered by Purchaser and constitute legal,
                  valid and binding obligations of Purchaser, enforceable
                  against Purchaser in accordance with their respective terms.

         (c)      Absence of Conflicting Agreements - The Purchaser is not a
                  party to, bound or affected by or subject to any indenture,
                  mortgage, lease, agreement, instrument, charter or by-law
                  provision, statute, regulation, order, judgment, decree or law
                  which would be violated, contravened or breached by, or under
                  which any default


                                       18
<PAGE>   19
                  would occur, as a result of the execution and delivery of this
                  Agreement or the consummation of any of the transactions
                  provided for herein.

         (d)      Litigation - There is no suit, action, litigation, arbitration
                  proceeding or governmental proceeding, including appeals and
                  applications for review, in progress, pending or, to the best
                  of the knowledge, information and belief (after due inquiry)
                  of the senior officers of the Purchaser, threatened against or
                  involving the Purchaser or any judgment, decree, injunction,
                  rule or order of any court, governmental department,
                  commission, agency, instrumentality or arbitrator which, in
                  any such case, would materially and adversely affect the
                  ability of the Purchaser to enter into this Agreement or to
                  consummate the transactions contemplated hereby.

         (e)      No Liens - At the time of delivery by the Purchaser to
                  Vendors, the Rural/Metro Stock shall be free and clear of any
                  liens, charges, encumbrances or rights of others.

         (f)      Third Party Approvals - Except for approvals required by the
                  Federal Trade Commission or other agencies for purposes of
                  complying with the Hart Act and those required by the Arizona
                  Department of Health Services, and except as disclosed in
                  Schedule "W", there are no approvals, consents or waivers
                  required to be obtained or applications required to be filed
                  from or with governmental authorities or from any other Person
                  whatsoever, including pursuant to any leases or contracts
                  containing prohibitions or pre-consent provisions pertinent to
                  this Agreement, in order to permit the transactions
                  contemplated herein.

         (g)      Restrictions on Transfer - Other than as provided by federal
                  and state securities laws, rules and regulations, including,
                  without limitation, Rule 145 promulgated under the Act and the
                  window policies established by Purchaser's Board of Directors
                  concerning the purchase and sale of Purchaser's securities by
                  insiders of the Purchaser, there are no restrictions on
                  transfer of the Rural/Metro Stock by Vendors.

         (h)      Accuracy of Documents, Representations and Warranties - The
                  copies of all documents furnished to the Vendors and their
                  representatives by or on behalf of Purchaser and its
                  representatives are true, complete and correct in all material
                  respects. No representation or warranty of Purchaser contained
                  in this Agreement or the other agreements referenced herein to
                  which Purchaser is a party, and no statement contained in the
                  exhibits, the schedules or the other documents delivered by
                  or on behalf of Purchaser or its representatives pursuant to
                  or in connection with this Agreement or any of the
                  transactions contemplated hereby contains any untrue statement
                  of a material fact, or omits to state any material fact
                  required to be stated herein or therein in order to make the
                  statements contained herein or therein not misleading.


                                       19
<PAGE>   20
3.3 NO BROKER - Each of the Parties represents and warrants to the others that
all negotiations relating to this Agreement and the transactions contemplated
hereby have been carried on between them directly and without the intervention
of any other party in such manner as to give rise to any valid claims against
any of the Parties for a brokerage commission, finder's fee or other like
payment.

3.4 NON-WAIVER - No investigations made by or on behalf of a Party at any time
shall have the effect of waiving, diminishing the scope of or otherwise
affecting any representation or warranty made by the other Party herein or
pursuant hereto.

3.5 NATURE OF REPRESENTATIONS, WARRANTIES AND COVENANTS - All statements
contained in any certificate or other instrument delivered by or on behalf of a
Party pursuant to or in connection with the transactions contemplated by this
Agreement shall be deemed to be made by such Party hereunder.

                                    ARTICLE 4

                     CONDITIONS PRECEDENT TO THE PERFORMANCE
                       BY THE PURCHASER AND THE VENDORS OF
                     THEIR OBLIGATIONS UNDER THIS AGREEMENT

4.1 PURCHASER'S CONDITIONS - The obligation of the Purchaser to complete the
purchase of the Purchased Shares hereunder shall be subject to the satisfaction
of, or compliance with, in all material respects, at or before the Closing Time,
each of the following conditions precedent (each of which is hereby acknowledged
to be inserted for the exclusive benefit of the Purchaser and may be waived by
it in whole or in part):

         (a)      Truth and Accuracy of Representations of Vendors at the
                  Closing Time - All of the representations and warranties of
                  Vendors made in or pursuant to this Agreement shall be true
                  and correct in all material respects as at the Closing Time
                  and with the same effect as if made at and as of the Closing
                  Time (except as such representations and warranties may be
                  affected by the occurrence of events or transactions expressly
                  contemplated and permitted hereby), and the Purchaser shall
                  have received a certificate from each of the Vendors
                  confirming the truth and correctness in all material respects
                  of their representations and warranties contained herein;

         (b)      Performance of Obligations - The Vendors shall have performed
                  or complied with all of their obligations, covenants and
                  agreements hereunder;

         (c)      Receipt of Closing Documentation - All documentation relating
                  to the due authorization and completion of the sale and
                  purchase hereunder of the Purchased Shares and all actions and
                  proceedings taken on or prior to the Closing in connection
                  with the performance by the Vendors of their obligations under
                  this


                                       20
<PAGE>   21
                  Agreement shall be reasonably satisfactory to the Purchaser
                  and the Purchaser shall have received copies of all such
                  documentation or other evidence as it may reasonably request
                  in order to establish the consummation of the transactions
                  contemplated hereby and the taking of all corporate
                  proceedings in connection therewith in compliance with these
                  conditions, in form (as to certification and otherwise) and
                  substance reasonably satisfactory to the Purchaser;

         (d)      Consents, Authorizations and Registrations - All consents,
                  approvals, orders and authorizations of any Persons or
                  governmental authorities (or registrations, declarations,
                  filings or recordings with any such authorities) required in
                  connection with the completion of any of the transactions
                  contemplated by this Agreement (including, without limitation,
                  any notifications, approvals or consents required by the
                  Arizona Department of Health Services) shall have been
                  obtained on or before the Closing Time; the Vendors shall have
                  obtained and delivered by Closing to the Purchaser written
                  consents, in form and substance satisfactory to the Purchaser,
                  to the transaction contemplated herein which are required (if
                  any) pursuant to the real property leases referred to in
                  Schedule "J" (and any customer contracts where approval or
                  consent is required), including, without limiting the
                  generality of the foregoing, such acknowledgements and
                  confirmations of good standing from the lessors in respect of
                  the real property leases referred to in Schedule "J" hereto as
                  may be reasonably requested by the Purchaser;

         (e)      Directors and Officers of Company - Subject to the terms of
                  the Employment Agreement, there shall have been delivered to
                  the Purchaser on or before the Closing Date the resignations
                  of such persons as the Purchaser shall direct who are
                  presently directors and/or officers of the Company.

         (f)      No Damage - No substantial damage by fire or other hazard to
                  the assets of the Company shall have occurred from the date
                  hereof to the Closing Date which is not fully and adequately
                  insured against;

         (g)      Litigation - On the Closing Date, there shall be no
                  litigation, governmental investigation or proceeding pending
                  or threatened for the purpose of enjoining or preventing the
                  consummation of any of the transactions contemplated by this
                  Agreement or otherwise claiming that such consummation is
                  improper;

         (h)      Hart-Scott-Rodino Filing - The applicable waiting period under
                  the Hart Act shall have expired or terminated.

         (i)      Management - Rural/Metro's Board of Directors shall have
                  confirmed the appointment of Ramsey to the Board of Directors
                  of Rural/Metro and to a senior executive position with
                  Rural/Metro.



                                       21
<PAGE>   22
         (j)      Investment Agreement - Vendors shall have each executed and
                  delivered to Purchaser an Investment Agreement in form and
                  content substantially as attached hereto as Appendix 4.1(j).

         (k)      Environmental Reports - Purchaser shall have received reports,
                  in form and content satisfactory to Purchaser, in the exercise
                  of its sole discretion, from independent environmental
                  consultants acceptable to Purchaser in its sole discretion,
                  and from legal counsel to Purchaser, concerning the real
                  properties owned or leased by the Company, which reports shall
                  be based, in part, on the results of environmental site
                  assessments which Purchaser may cause to be completed for and
                  on behalf of Purchaser prior to the Closing Date on all such
                  real or leased properties, which reports, if any, shall be
                  prepared at Purchaser's expense.

         (l)      Due Diligence - Purchaser shall, in the exercise of its sole
                  discretion, be entirely satisfied with the business,
                  operations, financial condition, assets and liabilities of the
                  Company.

         (m)      Schedules - Purchaser shall have received from Vendors the
                  Schedules referred to herein and all amendments and
                  modifications thereto, and Purchaser shall, in the exercise of
                  its sole discretion, be entirely satisfied with the nature and
                  extent of the disclosures made therein and the representations
                  and warranties of Vendors as modified by the disclosures
                  contained in the Schedules.

         (n)      Simultaneous Closings - On the Closing Date, the share
                  purchases and other transactions contemplated in each of the
                  Agreements of Purchase and Sale executed of even date herewith
                  for the sale of SW General, Inc., Medical Emergency Devices
                  and Services (MEDS), Inc., and Southwest General Services,
                  Inc. shall be consummated simultaneously with the transactions
                  contemplated herein.

4.2 VENDORS' CONDITIONS - The obligations of the Vendors to complete the sale of
the Purchased Shares hereunder shall be subject to the satisfaction of or
compliance with, at or before the Closing Time, each of the following conditions
precedent (each of which is hereby acknowledged to be inserted for the exclusive
benefit of the Vendors and may be waived by them in whole or in part):

         (a)      Truth and Accuracy of Representations of Purchaser at Closing
                  Time - All of the representations and warranties of the
                  Purchaser made in or pursuant to this Agreement shall be true
                  and correct in all material respects as at the Closing Time
                  and with the same effect as if made at and as of the Closing
                  Time and the Vendors shall have received a certificate from a
                  duly authorized senior officer of the Purchaser confirming the
                  truth and correctness in all material respects of the
                  representations and warranties of the Purchaser contained
                  herein;


                                       22
<PAGE>   23
         (b)      Performance of Obligations - The Purchaser shall have
                  performed or complied with all of its obligations, covenants
                  and agreements hereunder;

         (c)      Receipt of Closing Documentation - All documentation relating
                  to the due authorization and completion of the sale and
                  purchase hereunder of the Purchased Shares and all actions and
                  proceedings taken on or prior to the Closing in connection
                  with the performance by the Purchaser of its obligations under
                  this Agreement shall be reasonably satisfactory to the Vendors
                  and the Vendors shall have received copies of all such
                  documentation or other evidence as they may reasonably request
                  in order to establish the consummation of the transactions
                  contemplated hereby and the taking of all corporate
                  proceedings in connection therewith in compliance with these
                  conditions, in form (as to certification and otherwise) and
                  substance satisfactory to the Vendors;

         (d)      Release of Vendors' Guaranties - Purchaser shall have secured
                  the release of Vendors from liability for any personal
                  guarantees issued by Vendors as the shareholders of the
                  Company with respect to any liability of the Company for
                  borrowed money, and shall have provided to Vendors written
                  evidence thereof, or, in the alternative, Purchaser shall
                  deliver an agreement of assumption and indemnification, in
                  form and content mutually satisfactory to Purchaser and
                  Vendors, pursuant to which Purchaser will indemnify Vendors
                  for any such personal guaranty;

         (e)      Litigation - On the Closing Date, there shall be no
                  litigation, governmental investigation or proceeding pending
                  or threatened for the purpose of enjoining or preventing the
                  consummation of any of the transactions contemplated by this
                  Agreement or otherwise claiming that such consummation is
                  improper;

         (f)      Hart-Scott-Rodino Filing - The applicable waiting period under
                  the Hart Act shall have expired or terminated;

         (g)      Management - The Board of Directors of Rural/Metro shall have
                  confirmed the appointment of Ramsey to the Board of Directors
                  of Rural/Metro and to a senior executive position with
                  Rural/Metro and approved certain existing management contracts
                  of the Company;

         (h)      Investment Agreement - Purchaser shall have executed and
                  delivered to Vendors an Investment Agreement in form and
                  content substantially as attached hereto as Appendix 4.1(j).

         (i)      Simultaneous Closings - On the Closing Date, the share
                  purchases and other transactions contemplated in each of the
                  Agreements of Purchase and Sale executed of even date herewith
                  for the sale of SW General, Inc., Medical Emergency Devices
                  and Services ("MEDS"), Inc., and Southwest General


                                       23
<PAGE>   24
                  Services, Inc. shall be consummated simultaneously with the
                  transactions contemplated herein.

                                    ARTICLE 5

                         OTHER COVENANTS OF THE PARTIES

5.1 CONDUCT OF BUSINESS PRIOR TO CLOSING - During the period from the date of
this Agreement to the Closing Time, the Vendors will have the following
obligations and will cause the Company to do the following:

         (a)      Access to Records - Vendors shall, and shall cause the Company
                  and its employees, officers, agents, representatives and
                  accountants to, fully cooperate with Purchaser to allow the
                  officers, employees, attorneys, consultants and accountants of
                  Purchaser free and unrestricted access (but only through Barry
                  Landon, as representative of the Vendors and without
                  interference to the ordinary conduct of the Business) during
                  normal business hours to all of the properties, books,
                  contracts, documents and records of the Company and furnish to
                  Purchaser such information as Purchaser may at any time and
                  from time to time reasonably request until the Closing Time.

         (b)      Business in Ordinary Course - Vendors shall cause the Company
                  to carry on its business and affairs as heretofore carried on,
                  and neither the Company nor any Vendor will order, purchase or
                  lease any products, inventory, equipment, leased personalty,
                  or other items, or dispose of any of its assets or leased
                  property, or issue any quotations, or prepay any of its
                  material obligations, incur any liabilities or obligations,
                  hire or discharge any employee or officer or, without
                  limitation by specific enumeration of the foregoing, enter
                  into any other transaction, except in the usual and ordinary
                  course of its business in accordance with the past practices
                  of the Company and except as provided herein. Without limiting
                  the generality of the foregoing, Vendors shall not permit the
                  Company, without the prior written consent of Purchaser, to:

                  (i)       create or suffer to exist any liens or encumbrances
                            with respect to any of the assets or properties of
                            the Company which shall not be discharged at or
                            prior to the Closing Date, other than liens for
                            nondelinquent taxes;

                  (ii)      incur any indebtedness for borrowed money other than
                            in the usual and ordinary course of its business;

                  (iii)     sell or transfer any material assets or properties
                            (including, without limitation, sales and transfers
                            to Affiliates, other than Affiliates of the Company
                            the stock of which is to be acquired by Purchaser or
                            an Affiliate of Purchaser on the Closing Date);


                                       24
<PAGE>   25
                  (iv)      acquire or enter into any agreement or understanding
                            (oral or written) to acquire the stock or assets of
                            any other person, firm, corporation or other entity;

                  (v)       make any material change in the conduct or nature of
                            any aspect of its business, whether in the ordinary
                            course of business or not, or whether or not the
                            change has or will have a material adverse affect on
                            the business activities, financial condition, or
                            business prospects of the Company;

                  (vi)      waive any material rights;

                  (vii)     pay any Affiliate, other than Affiliates of the
                            Company the stock of which is to be acquired by
                            Purchaser or an Affiliate of Purchaser on the
                            Closing Date, or be charged by any Affiliate, other
                            than Affiliates of the Company the stock of which is
                            to be acquired by Purchaser or an Affiliate of
                            Purchaser on the Closing Date, for goods sold or
                            services rendered or be charged by any Affiliate,
                            other than Affiliates of the Company the stock of
                            which is to be acquired by Purchaser or an Affiliate
                            of Purchaser on the Closing Date, for corporate
                            overhead expenses, management fees, legal or
                            accounting fees, capital charges, or similar charges
                            or expenses, except for any payments made by the
                            Company pursuant to leases with NRM Properties, Inc.
                            or Chaparral Properties, Inc.;

                  (viii)    incur or commit to incur any individual capital
                            expenditures except in the ordinary course of its
                            business;

                  (ix)      amend employment contracts or the terms and
                            conditions of employment of any officer, director or
                            employee earning total annual compensation in excess
                            of $70,000, other than normal merit and cost of
                            living increases to employees in accordance with the
                            general prevailing practices of the Company existing
                            prior to the date of this Agreement;

                  (x)       pay or incur any management or consulting fees;

                  (xi)      hire any employee who shall have an annual salary in
                            excess of $70,000;

                  (xii)     enter into any transaction other than in the usual
                            and ordinary course of business; or

                  (xiii)    issue or sell any shares of the stock or other
                            securities of the Company, including any of the
                            Purchased Shares, or make or become obligated to
                            make any dividend or other distribution or payment
                            to Vendors or any


                                       25
<PAGE>   26
                            former shareholder of the Company in respect of any
                            stock or other security of the Company at any time
                            held by Vendor or such other former shareholders.

         (c)      Employees - Vendors shall use their reasonable efforts to
                  retain, and shall cause the Company to each retain its
                  business intact, preserve all its goodwill and customer and
                  employee relations, including keeping available the services
                  of each of its present employees, representatives and agents.

         (d)      Continue Insurance - Vendors shall cause the Company to
                  continue in force all existing policies of insurance presently
                  maintained by the Company.

         (e)      Perform Obligations - Vendors shall cause the Company to
                  comply in all material respects with all laws affecting the
                  operation of the Business and to pay all required taxes and
                  tax installments.

         (f)      Confidentiality - Until the Closing, and at all times
                  thereafter as provided in Section 6.1(d) hereof, Vendors will
                  maintain as confidential their discussions with Purchaser, and
                  the terms and conditions of this Agreement, and the other
                  agreements to be executed in connection herewith, and except
                  as reasonably necessary to fulfill Vendors' obligations
                  hereunder or as required by law, will not make any trade press
                  or other announcement or disclosure in relation to such
                  discussions whether before or after Closing without the prior
                  written consent of Purchaser.

         (g)      Exclusivity - Until the earlier of the Closing or the
                  termination of this Agreement in accordance with the terms
                  hereof, Vendors will negotiate the sale of the stock, assets
                  and properties of the Company only with Purchaser, and no
                  Vendor will permit the Company to, directly or indirectly,
                  enter into any discussion with, or disclose any information in
                  relation to the Purchased Shares or the assets of the Company
                  to any other person, firm, or other entity, other than
                  Purchaser.

         (h)      Equitable Relief - Each Vendor acknowledges and agrees that
                  the covenants contained in each of paragraphs (f) and (g) of
                  this Section 5.1 are a material inducement for Purchaser to
                  execute and deliver this Agreement and to consummate the
                  transactions contemplated hereby. Accordingly, Vendor acknowl-
                  edges and agrees that the restrictions contained in each of
                  paragraphs (f) and (g) of this Section 5.1 are reasonable and
                  necessary for the protection of the business of Purchaser and
                  its subsidiaries, the Company, and the investment of Purchaser
                  in the Company, and that a breach of any such restriction
                  could not adequately be compensated by damages in an action at
                  law. In the event of a breach or threatened breach by any
                  Vendor of any of the provisions of any of paragraphs (f) or
                  (g) of this Section 5.1, Purchaser shall be entitled to
                  obtain, without the necessity of posting bond therefor, an
                  injunction (preliminary or permanent, or a temporary
                  restraining order) restraining such Vendor from the activity
                  or


                                       26
<PAGE>   27
                  threatened activity constituting, or which would constitute, a
                  breach, as well as damages and an equitable accounting of all
                  earnings, profits and other benefits arising from a violation,
                  which right shall be cumulative and in addition to any other
                  rights or remedies to which Purchaser may be entitled.

         (i)      Severability - Each and every provision set forth in each of
                  paragraphs (f) and (g) of this Section 5.1 is independent and
                  severable from the others, and no provision shall be rendered
                  unenforceable by virtue of the fact that, for any reason, any
                  other or others of them may be unenforceable in whole or in
                  part. The parties hereto agree that if any provision of
                  paragraphs (f) or (g) of this Section 5.1 shall be declared by
                  a court of competent jurisdiction to be unenforceable for any
                  reason whatsoever, the court may appropriately limit or modify
                  such provision, and such provision shall be given effect to
                  the maximum extent permitted by applicable law.

         (j)      Consents - Vendors shall use their reasonable efforts and make
                  every good faith attempt to obtain any and all consents and
                  estoppel letters reasonably requested by Purchaser to or in
                  connection with the assignment of, or alternate arrangements
                  satisfactory to Purchaser with respect to, any contract,
                  lease, license, permit, agreement, or other instrument, which
                  is to be an asset of the Company, or which may be necessary,
                  appropriate, or required in order to permit the conduct of the
                  Business and operations of the Company after the Closing to be
                  in all respects the same as the conduct of the Business and
                  operations of the Company, prior to the Closing.

5.2 OBLIGATIONS OF PURCHASER - During the period from the date of this Agreement
to the Closing Time, or such other period as provided by this Agreement, the
Purchaser will have the following obligations:

         (a)      Confidentiality - Purchaser will maintain as confidential its
                  discussions with Vendors, and the terms and conditions of this
                  Agreement, and the other agreements to be executed in
                  connection herewith, and except as reasonably necessary to
                  fulfill its obligations hereunder or as required by law, will
                  not make any trade press or other announcement or disclosure
                  in relation to such discussions without the prior written
                  consent of Vendors. In the event of the termination of this
                  Agreement without consummation of the transactions
                  contemplated hereby, Purchaser will keep confidential any
                  information (unless readily available from public or published
                  information sources) obtained from the Company or the Vendors.
                  If this Agreement is so terminated, promptly after such
                  termination, all documents, work papers and other written
                  material obtained from Vendors' representative in connection
                  with this Agreement and not theretofore made public (including
                  all copies thereof), shall be returned to the Person that
                  provided such material. Purchaser shall provide Vendors with a
                  list of representatives of Purchaser involved in the due
                  diligence, and said representatives shall refrain


                                       27
<PAGE>   28
                  from discussing the transaction and its due diligence
                  activities with any other employee or representative of
                  Purchaser not disclosed on the list.

         (b)      Nonsolicitation - In the event of termination of this
                  Agreement without consummation of the transactions
                  contemplated hereby, Purchaser agrees that for a period of
                  three (3) years following such termination, Purchaser will
                  not, directly or indirectly, solicit or cause others to
                  solicit any person who, on the date hereof, is an employee of
                  the Company and whose annual compensation from the Company
                  exceeds $25,000, for employment or as an independent
                  contractor with any person or entity, unless first authorized
                  in writing by Vendors, which authorization may be withheld in
                  the sole and absolute discretion of Vendors.

         (c)      Trade Secrets and Other Information - In the event of
                  termination of this Agreement without consummation of the
                  transactions contemplated hereby, Purchaser agrees that after
                  the Closing Purchaser will not communicate or divulge to, or
                  use for the benefit of, any person, firm or corporation any of
                  the trade secrets, methods, formulas, business and/or
                  marketing plans, processes or any other proprietary or
                  confidential information with respect to the Company and its
                  business, financial condition, business operations or methods,
                  or business prospects. The preceding sentence shall not apply
                  to information which (i) is, was or becomes generally known or
                  available to the public or the industry other than as a result
                  of a disclosure by Purchaser in violation of this Agreement,
                  or (ii) is required to be disclosed by law. Purchaser will
                  advise Vendors, in writing, of any request, including a
                  subpoena or similar legal inquiry, to disclose any such
                  confidential information, such that Vendors can seek
                  appropriate legal relief.

         (d)      Equitable Relief - Purchasers acknowledge that the covenants
                  contained in each of paragraphs (a), (b), and (c) of this
                  Section 5.2 are a material inducement for Vendors to execute
                  and deliver this Agreement and to consummate the transac-
                  tions contemplated hereby. Accordingly, Purchaser acknowledges
                  and agrees that the restrictions contained in each of
                  paragraphs (a), (b), and (c) of this Section 5.2 are
                  reasonable and necessary for the protection of the business of
                  the Company, and Vendors' investment in the Company, and that
                  a breach of any such restriction could not adequately be
                  compensated by damages in an action at law. In the event of a
                  breach or threatened breach by Purchaser of any of the
                  provisions of any of paragraphs (a), (b), or (c) of this
                  Section 5.2, Vendors shall be entitled to obtain, without the
                  necessity of posting bond therefor, an injunction (preliminary
                  or permanent, or a temporary restraining order) restraining
                  Purchaser from the activity or threatened activity
                  constituting, or which would constitute, a breach of this
                  Agreement, as well as damages and an equitable accounting of
                  all earnings, profits and other benefits arising from such a
                  violation, which right shall be cumulative and in addition to
                  any other rights or remedies to which Vendors may be entitled.



                                       28
<PAGE>   29
         (e)      Severability - Each and every provision set forth in each of
                  paragraphs (a), (b), and (c) this Section 5.2 is independent
                  and severable from the others, and no provision shall be
                  rendered unenforceable by virtue of the fact that, for any
                  reason, any other or others of them may be unenforceable in
                  whole or in part. The parties hereto agree that if any
                  provision of any of paragraphs (a), (b), or (c) of this
                  Section 5.2 shall be declared by a court of competent
                  jurisdiction to be unenforceable for any reason whatsoever,
                  the court may appropriately limit or modify such provision,
                  and such provision shall be given effect to the maximum extent
                  permitted by applicable law.

         (f)      Consents - Purchaser shall use its reasonable efforts and make
                  every good faith attempt to obtain any and all consents and
                  estoppel letters which may be necessary, appropriate, or
                  required in order to permit consummation of the transactions
                  contemplated herein.

5.3 JOINT OBLIGATIONS OF VENDORS AND PURCHASER - During the period from the date
of this Agreement to the Closing Time, the following shall apply with equal
force to Vendors and Purchaser:

         (a)      Notice - Each Party shall promptly give the other parties
                  written notice of the existence or occurrence of any condition
                  that would make any representation or warranty of the
                  notifying Party untrue or that might reasonably be expected to
                  prevent the consummation of the transactions herein
                  contemplated.

         (b)      Performance - No Party shall intentionally perform or omit to
                  perform any act which, if performed or omitted, would prevent
                  or excuse the performance of this Agreement by any Party
                  hereto or that would result in any representation or warranty
                  contained herein of that Party being untrue in any material
                  respect as of the date hereof and as if originally made on and
                  as of the Closing Date.

         (c)      Hart-Scott-Rodino Filings - Each party shall take whatever
                  steps are necessary to make any filings required under the
                  Hart Act not later than ten days after the date of execution
                  of this Agreement.

                                    ARTICLE 6

                            POST CLOSING OBLIGATIONS

6.1 OBLIGATIONS OF VENDORS - Following the Closing, Vendors shall each be
subject to the following obligations:

         (a)      Covenant Not to Compete - In consideration of the execution
                  and delivery of this Agreement by Purchaser, and in
                  consideration of the Purchase Price, and as additional
                  consideration therefor, each of the Vendors unconditionally
                  agrees that


                                       29
<PAGE>   30
                  during the Restricted Period (as defined below) no Vendor
                  will, directly or indirectly (including, without limitation,
                  as a partner, shareholder, director, officer or employee of,
                  or lender or consultant to, any other person or entity), for
                  himself, herself or itself, or on behalf of, or in conjunction
                  with, any other Person or governmental entity, in any manner
                  whatsoever, or in any other capacity within, into or from the
                  Restricted Territory (as defined below) engage or cause others
                  to engage in the Business, or any aspect thereof, unless first
                  authorized in writing by Purchaser, which authorization may be
                  withheld in the sole and absolute discretion of Purchaser. For
                  purposes of this Agreement, the term "Restricted Period" shall
                  mean the period ending three (3) years from the Closing Date.
                  For purposes of this Agreement, the term "Restricted
                  Territory" shall mean the State of Arizona. If any Vendor
                  violates his, her or its obligations under this Section
                  6.1(a), then the Restricted Period shall be extended by the
                  period of time equal to that period beginning when the
                  activities constituting such violation commenced and ending
                  when the activities constituting such violation terminated.
                  Notwithstanding the foregoing, the obligations of the Vendors
                  under this Section 6.1(a) shall terminate if Ramsey is
                  terminated by Purchaser without Cause as defined and described
                  in the Employment Agreement. The Purchaser agrees that no
                  breach of this covenant not to compete will occur as a result
                  of Ramsey's formation of and activities with respect to any
                  501(c)(3) foundation, his continued association with the
                  International Association of Firefighters, his continued
                  ownership and operation of an ambulance service company in
                  Pima County under the name Kords Southwest, or his continued
                  service as President of the Arizona Ambulance Association.

         (b)      Nonsolicitation - In consideration of the execution and
                  delivery of this Agreement by Purchaser, and in consideration
                  of the Purchase Price, each of the Vendors agrees that for a
                  period of three (3) years following the Closing Date no Vendor
                  will directly or indirectly solicit or cause others solicit
                  (i) in respect of the Business, any Person or other entity
                  that is, or was within the twelve (12) month period
                  immediately prior to the Closing, a customer or supplier of
                  the Company, or (ii) any person who, on the date hereof, is an
                  employee of the Company and whose annual compensation from the
                  Company exceeds $25,000, for employment or as an independent
                  contractor with any Person or entity, unless first authorized
                  in writing by Purchaser, which authorization may be withheld
                  in the sole and absolute discretion of Purchaser. If any
                  Vendor violates his, her or its obligations under this Section
                  6.1(b), then the time periods hereunder shall be extended by
                  the period of time equal to that period beginning when the
                  activities constituting such violation commenced and ending
                  when the activities constituting such violation terminated.
                  Notwithstanding the foregoing, the obligations of the Vendors
                  under this Section 6.1(b) shall terminate if Ramsey is
                  terminated by Purchaser without Cause as defined and described
                  in the Employment Agreement.



                                       30
<PAGE>   31
         (c)      Trade Secrets and Other Information - In consideration of the
                  execution and delivery of this Agreement by Purchaser, and in
                  consideration of the Purchase Price, each of the Vendors
                  agrees that after the Closing no Vendor will communicate or
                  divulge to, or use for the benefit of, any Person other than
                  Purchaser or the Company, or its or their agents and
                  representatives, any of the trade secrets, methods, formulas,
                  business and/or marketing plans, processes or any other
                  proprietary or confidential information with respect to the
                  Company and its business, financial condition, business
                  operations or methods, or business prospects. The preceding
                  sentence shall not apply to information which (i) is, was or
                  becomes generally known or available to the public or the
                  industry other than as a result of a disclosure by a Vendor in
                  violation of this Agreement, or (ii) is required to be
                  disclosed by law. Vendors will advise Purchaser, in writing,
                  of any request, including a subpoena or similar legal inquiry,
                  to disclose any such confidential information, such that
                  Purchaser can seek appropriate legal relief.

         (d)      Confidentiality - At all times after the Closing, Vendors will
                  maintain as confidential the discussions between Vendors and
                  Purchaser, and the terms and conditions of this Agreement, and
                  the other agreements to be executed in connection herewith,
                  and except as required by law, will not make any trade press
                  or other announcement or disclosure in relation to such
                  discussions whether before or after Closing without the prior
                  written consent of Purchaser.

         (e)      Equitable Relief - Vendors acknowledge that the covenants
                  contained in each of paragraphs (a), (b), (c), and (d) of this
                  Section 6.1 are a material inducement for Purchaser to execute
                  and deliver this Agreement and to consummate the transactions
                  contemplated hereby. Accordingly, Vendors acknowledge and
                  agree that the restrictions contained in each of paragraphs
                  (a), (b), (c), and (d) of this Section 6.1 (including, without
                  limitation, the Restricted Period and the Restricted
                  Territory) are reasonable and necessary for the protection of
                  the business of the Company, and Purchaser's investment in the
                  Company, and that a breach of any such restriction could not
                  adequately be compensated by damages in an action at law. In
                  the event of a breach or threatened breach by any Vendors of
                  any of the provisions of any of paragraphs (a), (b), (c), or
                  (d) of this Section 6.1, Purchaser shall be entitled to
                  obtain, without the necessity of posting bond therefor, an
                  injunction (preliminary or permanent, or a temporary
                  restraining order) restraining that Vendor from the activity
                  or threatened activity constituting, or which would
                  constitute, a breach of this Agreement, as well as damages and
                  an equitable accounting of all earnings, profits and other
                  benefits arising from such a violation, which right shall be
                  cumulative and in addition to any other rights or remedies to
                  which Purchaser may be entitled.

         (f)      Severability - Each and every provision set forth in each of
                  paragraphs (a), (b), (c), and (d) this Section 6.1 is
                  independent and severable from the others, and no provision
                  shall be rendered unenforceable by virtue of the fact that,
                  for any


                                       31
<PAGE>   32
                  reason, any other or others of them may be unenforceable in
                  whole or in part. The parties hereto agree that if any
                  provision of any of paragraphs (a), (b), (c) or (d) of this
                  Section 6.1 shall be declared by a court of competent
                  jurisdiction to be unenforceable for any reason whatsoever,
                  the court may appropriately limit or modify such provision,
                  and such provision shall be given effect to the maximum extent
                  permitted by applicable law.

         (g)      Consents - Vendors shall use their reasonable efforts and make
                  every good faith attempt to obtain any and all consent and
                  estoppel letters, if any, reasonably requested by Purchaser to
                  or in connection with the assignment of, or alternate
                  arrangements satisfactory to Purchaser with respect to, any
                  contract, lease, license, permit, agreement, or other
                  instrument, which is to be an asset of the Company, or which
                  may be necessary, appropriate, or required in order to permit
                  the conduct of the business and operations of the Company
                  after the Closing to be in all respects the same as the
                  conduct of the business and operations of the Company prior to
                  the Closing.

6.2 OBLIGATIONS OF PURCHASER - Following the Closing, Purchaser shall be subject
to the following obligations:

         (a)      Tax Amendments - The Purchaser agrees that the Company shall
                  not, and the Purchaser shall not cause the Company to, amend
                  the Company's tax returns for 1995 or earlier without the
                  prior consent of Ramsey. In the event the Company and/or the
                  Purchaser amends such tax returns without Ramsey's consent,
                  the Purchaser agrees to indemnify the Vendors for any
                  liabilities that any of them may occur as a result of any such
                  amendment; provided, however, that Vendors agree jointly and
                  severally to indemnify, defend and hold harmless the Purchaser
                  and the Company for any liabilities, costs, penalties, fines
                  and interest that either of them may incur as the result of
                  any refusal to grant the consent referred to above.

         (b)      Non Interference With Leases - Purchaser acknowledges the
                  existence of certain real property leases between the Company
                  and NRM Properties, Inc. and Chaparral Properties, Inc.
                  (collectively the "Landlords"), and agrees not to interfere
                  with such leases and to cause the Company to abide by such
                  leases. In the event that the Company and/or the Purchaser
                  reaches this Agreement, the Purchaser shall pay to the
                  appropriate Landlord the full amount of all unpaid monetary
                  obligations of the Company through the lease period in effect
                  at the time of the Closing and agrees that such remedy is in
                  addition to all other remedies that the Landlords or the
                  Vendors may have at law or in equity.

6.3 OBLIGATIONS OF VENDORS AND PURCHASER - Following the Closing, Vendors and
Purchaser shall execute such further documents, and perform such further acts,
as may be necessary to transfer and convey the Purchased Shares to Purchaser, on
the terms herein contained, and to


                                       32
<PAGE>   33
otherwise comply with the terms of this Agreement and consummate the
transactions herein provided.

6.4      SECTION 338(h)(10) ELECTION

         (a)      Making the Section 338(h)(10) Election; Form 8023-A - Vendors
                  shall timely join with the Purchaser in making an election
                  pursuant to Section 338(h)(10) of the Code (and any
                  corresponding election under state law) (the "Section
                  338(h)(10) Election"). After Closing, Purchaser will promptly
                  prepare IRS Form 8023-A ("Form 8023-A") and any related
                  schedules required to be included with such form and Vendors
                  shall provide the Purchaser with all necessary information to
                  timely prepare such schedules (the "Election Schedules").
                  Purchaser shall submit the Form 8023-A and the Election
                  Schedules to the Vendors for their review. The Vendors shall
                  immediately execute the Form 8023-A and submit seven original
                  signed duplicates thereof to Purchaser who shall be entitled
                  to file the Form 8023-A and the Election Schedules with the
                  IRS. Vendors shall also timely comply with their
                  responsibilities as required by the Code to effect the
                  338(h)(10) Election.

         (b)      Section 338(h)(10) Election Purchase Price Adjustment. The
                  Purchaser hereby covenants and agrees to defend, indemnify and
                  hold harmless the Vendor for, from and against any tax
                  liability, including related penalties, interest and any
                  additional fees and costs (including, without limitation,
                  attorneys' and accountants' fees and costs) that accrue to the
                  Vendor as a direct result of the Section 338(h)(10) Election
                  (the "Tax Liability"). The Tax Liability resulting from the
                  Section 338(h)(10) Election shall be paid in cash to the
                  Vendor immediately prior to the time such Tax Liability, if
                  any, is required to be paid to the applicable taxing
                  authority.

                                    ARTICLE 7

                                 INDEMNIFICATION

7.1      INDEMNIFICATION BY VENDORS

         (a)      General - Subject to Section 7.4 hereof, Vendors jointly and
                  severally covenant and agree to defend, indemnify and hold
                  Purchaser and the Company, its and their officers, directors,
                  shareholders and subsidiaries, harmless for, from and against
                  any and all damages, losses, liabilities (absolute and
                  contingent), fines, penalties, costs and expenses (including,
                  without limitation, reasonable counsel fees and costs and
                  expenses incurred in the investigation, defense or settlement
                  of any claim covered by this indemnity) with respect to or
                  arising out of any demand, claim, inquiry, investigation,
                  proceeding, action or cause of action that Purchaser and/or
                  the Company, its and their officers, directors, shareholders
                  and


                                       33
<PAGE>   34
                  subsidiaries, may suffer or incur by reason of: (a) the
                  inaccuracy of any of the representations or warranties of
                  Vendors contained in this Agreement, or any of the agreements,
                  certificates, documents, exhibits or schedules delivered in
                  connection with this Agreement; (b) the failure to comply
                  with, or the breach or default by any Vendor of any of the
                  covenants, warranties or agreements made by that Vendor
                  contained in this Agreement, or any of the agreements,
                  certificates, documents, exhibits or schedules delivered in
                  connection with this Agreement; (c) any pending or threatened
                  litigation, claims, investigations, inquiries, regulatory
                  audits or assessments, or other similar proceedings against
                  Purchaser and/or the Company and/or its or their directors,
                  officers, shareholders, employees, agents or representatives,
                  as well as any future litigation, claims, investigations,
                  inquiries, regulatory audits or assessments, or other similar
                  proceedings against the Purchaser and/or the Company and/or
                  its or their directors, officers, shareholders, employees,
                  agents or representatives that arise from a state of facts
                  existing prior to the Closing, and which are not fully covered
                  and reimbursed by insurance; or (d) any liability or
                  obligation of the Company not reflected, provided for, or
                  adequately reserved against on the balance sheets included in
                  the Financial Statements. Purchaser and/or the Company shall
                  be entitled to offset against any amount owed by Purchaser
                  and/or the Company to Vendors, (or any of them) any amount
                  owed to Purchaser and/or the Company by Vendor, (or any of
                  them) or any of their Affiliates.

         (b)      Environmental - Subject to Section 7.4 hereof, Vendors jointly
                  and severally covenant and agree to defend, indemnify and hold
                  Purchaser and/or the Company, and their officers, directors
                  and shareholders harmless for, from and against any and all
                  damages, losses, liabilities (absolute and contingent), fines,
                  penalties, costs and expenses (including, without limitation,
                  reasonable counsel fees and costs and expenses incurred in the
                  investigation, defense or settlement of any claim covered by
                  this indemnity and costs associated with any environmental
                  assessments and/or remediation expenses) by reason of any
                  inaccuracy of any of the representations or warranties set
                  forth in Section 3.1(cc) hereof, or with respect to or arising
                  out of any demand, claim, inquiry, investigation, proceeding,
                  action, or cause of action brought by any governmental agency
                  or instrumentality or any Person other than Purchaser, which
                  Purchaser and/or the Company, or any of their officers,
                  directors or shareholders may suffer or incur by reason of:

                  (i)       any generation, transportation, storage, treatment
                            or disposal of industrial, toxic or hazardous
                            substances or solid or hazardous wastes occurring on
                            or prior to the Closing Date including, without
                            limitation, any waste or other disposal activities
                            or discharges that occurred at a facility on which
                            any portion of the Company's (or its predecessors')
                            business was conducted, any waste or other disposal
                            activities or discharges that occurred off of any
                            such facility with regard to wastes and other
                            substances generated on such facility, and any waste
                            or other


                                       34
<PAGE>   35
                            disposal activities or discharges that occurred on
                            real estate at any time whether or not the Company
                            (or its predecessors) owned or leased such real
                            estate at the time such waste or other disposal
                            activities or discharges were engaged in, where the
                            Company or Persons at the direction of the Company
                            performed such waste or other disposal activities or
                            discharges;

                  (ii)      any spills, discharges, leaks, emissions,
                            injections, escapes, dumping, or any releases as
                            defined now or in the future under the Comprehensive
                            Environmental Response, Compensation, and Liability
                            Act of 1980, P.L. 96-510, as amended or reauthorized
                            from time to time, or any other similar federal,
                            state or local laws, statutes, rules or regulations,
                            occurring on or prior to the Closing Date,
                            including, but not limited to, both those releases
                            or incidents involving environmental contamination
                            that required notification or reporting to
                            appropriate federal, state or local officials or
                            agencies, or clean-up or remedial activities and
                            those releases or incidents which occurred prior to
                            the effective date of any requirements imposing such
                            notification or reporting obligations or clean-up
                            or remedial activities, but which would have been
                            subject to such obligations if they had occurred
                            subsequent to the effective date of such
                            requirements;

                  (iii)     any discharges to surface waters or groundwaters
                            occurring on or prior to the Closing Date;

                  (iv)      any air emissions occurring on or prior to the
                            Closing Date;

                  (v)       the exposure of and resulting consequences to any
                            persons, including, but not limited to, employees of
                            the Company (or any of its predecessors), to any
                            mineral, chemical or industrial product, raw
                            material intermediate, by-product or waste, or
                            substance created, generated, processed, handled or
                            originating at a facility at which the Company (or
                            any of its predecessors) conducted business on or
                            prior to the Closing Date or otherwise used by the
                            Company (or any of its predecessors) in the conduct
                            of its business;

                  (vi)      any violations by the Company (or any of its
                            predecessors) occurring on or prior to the Closing
                            Date of federal, state or local (A) environmental
                            laws, or (B) occupational or employee health and
                            safety laws;

                  (vii)     any and all actions, failures to act and negligence
                            in monitoring, maintaining and upkeep of on-site
                            storage, treatment and disposal facilities on or
                            prior to the Closing Date;



                                       35
<PAGE>   36
                  (viii)    any misuse, removal, failure to properly maintain
                            and/or monitor storage tanks on or prior to the
                            Closing Date; or

                  (ix)      any violations, fees, obligations or failures to
                            comply with any and all environmental permit
                            requirements on or prior to the Closing Date.

7.2      INDEMNIFICATION BY PURCHASER

         (a)      General - Subject to Section 7.4 hereof, Purchaser covenants
                  and agrees to defend, indemnify and hold each Vendor harmless
                  for, from and against any and all damages, losses, liabilities
                  (absolute and contingent), fines, penalties, costs and
                  expenses (including, without limitation, reasonable counsel
                  fees and costs and expenses incurred in the investigation,
                  defense or settlement of any claim covered by this indemnity)
                  with respect to or arising out of any demand, claim, inquiry,
                  investigation, proceeding, action and/or cause of action that
                  any Vendor may suffer or incur by reason of: (a) the
                  inaccuracy of any of the representations or warranties of
                  Purchaser contained in this Agreement, or any of the
                  agreements, certificates, documents, exhibits or schedules
                  delivered by Purchaser in connection with this Agreement; and
                  (b) the failure to comply with, the breach or the default by
                  Purchaser of any of the covenants, warranties or agreements
                  made by Purchaser in this Agreement, or any of the agreements,
                  certificates, documents, exhibits or schedules delivered by
                  Purchaser in connection with this Agreement.

         (b)      Environmental - Subject to Section 7.4 hereof, Purchaser
                  covenants and agrees to defend, indemnify and hold each Vendor
                  harmless for, from and against any and all damages, losses,
                  liabilities (absolute and contingent), fines, penalties, costs
                  and expenses (including, without limitation, reasonable
                  counsel fees and costs and expenses incurred in the
                  investigation, defense or settlement of any claim covered by
                  this indemnity) with respect to or arising out of any demand,
                  claim, inquiry, investigation, proceeding, action or cause of
                  action brought by any governmental agency or instrumentality
                  or any Person other than Vendors which any Vendor may suffer
                  or incur by reason of:

                  (i)       any generation, transportation, storage, treatment
                            or disposal of industrial, toxic or hazardous
                            substances or solid or hazardous wastes occurring
                            after the Closing Date including, without
                            limitation, any waste or other disposal activities
                            or discharges that occur after the Closing Date at a
                            facility on which any portion of the business of the
                            Company is conducted, any waste or other disposal
                            activities or discharges that occur after the
                            Closing Date off of any such facility with regard to
                            wastes and other substances generated after the
                            Closing Date on such facility, and any waste or
                            other disposal activities or discharges that occur
                            after the Closing Date on real estate owned or
                            leased by the Company, at any time


                                       36
<PAGE>   37
                            after the Closing Date whether or not the Company
                            owns or leases such real estate at the time such
                            waste or other disposal activities or discharges are
                            engaged in, and whether or not the Company performs
                            such waste or other disposal activities or
                            discharges;

                  (ii)      any spills, discharges, leaks, emissions,
                            injections, escapes, dumping, or any releases as
                            defined now or in the future under the Comprehensive
                            Environmental Response, Compensation, and Liability
                            Act of 1980, P.L. 96-510, as amended or reauthorized
                            from time to time, or any other similar federal,
                            state or local laws, statutes, rules or regulations
                            occurring after the Closing Date, including, but not
                            limited to, both those releases or incidents
                            involving environmental contamination which require
                            notification or reporting to appropriate federal,
                            state or local officials or agencies, or clean-up or
                            remedial activities and those releases or incidents
                            which occurred prior to the effective date of any
                            requirements imposing such notification or
                            reporting obligations or clean-up or remedial
                            activities, but which would have been subject to
                            such obligations if they had occurred subsequent
                            to the effective date of such requirements;

                  (iii)     any discharges to surface waters or groundwaters
                            occurring after the Closing Date;

                  (iv)      any air emissions occurring after the Closing Date;

                  (v)       the exposure after the Closing Date of and resulting
                            consequences to any persons, including, but not
                            limited to, employees of Purchaser to any mineral,
                            chemical or industrial product, raw material
                            intermediate, by-product or waste, or substance
                            created, generated, processed, handled or originated
                            after the Closing Date at a facility at which
                            Purchaser, or the Company conducts business after
                            the Closing Date or otherwise used after the Closing
                            Date by Purchaser or the Company in the conduct of
                            its business or contained in or constituting a part
                            of merchandise which is sold by Purchaser or the
                            Company after the Closing Date;

                  (vi)      any violations by Purchaser or the Company occurring
                            after the Closing Date of federal, state or local
                            (A) Environmental Laws, or (B) occupational or
                            employee health and safety laws;

                  (vii)     any and all actions, failures to act and negligence
                            in monitoring, maintaining and upkeep of on-site
                            storage, treatment and disposal facilities after the
                            Closing Date;



                                       37
<PAGE>   38
                  (viii)    any misuse, removal, failure to properly maintain
                            and/or monitor storage tanks after the Closing Date;
                            and

                  (ix)      any violations, fees, obligations or failure to
                            comply with any and all environmental permit
                            requirements after Closing Date.

7.3 NOTICE AND RIGHT TO DEFEND THIRD-PARTY CLAIMS - Promptly upon receipt of
notice of any claim, demand or assessment or the commencement of any suit,
action or proceeding with respect to which indemnity may be sought pursuant to
this Agreement, the party seeking to be indemnified or held harmless (the
"Indemnitee") shall notify in writing, if possible, within sufficient time to
respond to such claim or answer or otherwise plead in such action (but in any
event within thirty (30) days), the party from whom indemnification is sought
(the "Indemnitor"). In case any claim, demand or assessment shall be asserted,
or suit, action or proceeding commenced against the Indemnitee, the Indemnitor
shall be entitled, at the Indemnitor's expense, to participate therein, and, to
the extent that it may wish, to assume the defense, conduct or settlement
thereof, at its own expense, with counsel satisfactory to the Indemnitee, whose
consent to the selection of counsel shall not be unreasonably withheld or
delayed, provided that the Indemnitor confirms to the Indemnitee that it is a
claim to which Indemnitee's rights of indemnification apply. The Indemnitor
shall have the right to settle or compromise monetary claims; however, as to any
other claim, the Indemnitor shall first obtain the prior written consent from
the Indemnitee, which consent shall be exercised in the sole discretion of the
Indemnitee. After notice from the Indemnitor to the Indemnitee of Indemnitor's
intent so to assume the defense, conduct, settlement or compromise of such
action, the Indemnitor shall not be liable to the Indemnitee for any legal or
other expenses (including, without limitation, settlement costs) subsequently
incurred by the Indemnitee in connection with the defense, conduct, settlement
or compromise of such action while the Indemnitor is diligently defending,
conducting, settling or compromising such action. The Indemnitor shall be
afforded at least thirty (30) days, at its sole cost and expense, to resist,
defend and compromise any claim for which indemnification is sought. The
Indemnitor shall keep the Indemnitee promptly apprised of the status of the
suit, action or proceeding and shall make Indemnitor's counsel available to the
Indemnitee, at the Indemnitor's expense, upon the request of the Indemnitee. The
Indemnitee shall reasonably cooperate with the Indemnitor in connection with any
such claim and shall make personnel, books and records and other information
relevant to the claim available to the Indemnitor during normal business hours
to the extent that such personnel, books and records and other information are
in the possession and/or control of the Indemnitee. If the Indemnitor decides
not to participate, the Indemnitee shall be entitled, at the Indemnitor's
expense, to defend, conduct, settle and/or compromise such matter with counsel
satisfactory to the Indemnitor, whose consent to the selection of counsel shall
not be unreasonably withheld or delayed.

7.4 SURVIVAL OF OBLIGATIONS - The liability of Vendors and Purchaser for
indemnification pursuant to this Article 7 shall (i) survive until terminated by
the applicable statute of limitations as to matters relating to: (a) ownership
and title to any of the assets of the Company; (b) ownership and title to the
capital stock of the Company; (c) competency to execute and deliver documents to
effect the transactions contemplated thereby and hereby, and the legal, binding
and


                                       38
<PAGE>   39
enforceable nature thereof and hereof; (d) the environment; and (e) taxes; (ii)
expire three (3) years from the Closing Date with respect to claims not made
prior thereto relating to any price or reimbursement adjustment under any
contract or arrangement with the United States Government, any state government,
or any insurer or healthcare provider organization involving any liability,
claim and/or fraud with respect to billings or reimbursement under either
Medicare or Medicaid for services provided by the Company prior to the Closing
Date (collectively, a "Third Party Claim"); and (iii) expire two (2) years from
the Closing Date with respect to claims not made prior thereto relating to all
other matters not referenced in this Section 7.4. This Section in no way limits
any claims that an Indemnitee may have against an Indemnitor for fraud or for
the breach of any direct covenant made by the Indemnitor to the Indemnitee
contained in this Agreement or the other agreements delivered in connection
therewith.

7.5 INDEMNIFICATION THRESHOLD FOR THIRD PARTY CLAIMS - Purchaser shall not be
entitled to indemnification pursuant to this Agreement with respect to any Third
Party Claim (as defined in Section 7.4 hereof) until the total amount for which
Purchaser shall be entitled to such indemnification including any
indemnification owing to Purchaser arising from Third Party Claims against any
one or more of the other Southwest Companies,exceeds Fifty Thousand Dollars
($50,000) in the aggregate; provided, however, that once such amount exceeds
Fifty Thousand Dollars ($50,000), then in that event, Purchaser shall be
entitled to indemnification for the total amount for which indemnification may
be owing, less the first Fifty Thousand Dollars ($50,000). Such indemnification
threshold will be increased in an amount equal to the amount by which the
Closing Accounts Receivable actually collected by the Southwest Companies during
the Collection Period exceeds the Target Accounts Receivable. Nothing contained
in this Section 7.5 shall in any manner constitute or be deemed to limit any
claim by Purchaser arising out of a claim of fraud.

                                    ARTICLE 8

                                   TERMINATION

8.1 RIGHT TO TERMINATE - Notwithstanding anything to the contrary contained
herein, this Agreement and the transactions contemplated hereby may be
terminated at any time prior to the Closing: (a) by Purchaser if the conditions
precedent set forth in Section 4.1 are not satisfied or waived in writing by
Purchaser; or (b) by Vendors if the conditions precedent set forth in Section
4.2 are not satisfied or waived in writing by Vendors. In addition, this
Agreement shall terminate if the Closing has not occurred by April 15, 1997,
unless extended by written agreement of the Parties hereto.


                                       39
<PAGE>   40
                                    ARTICLE 9

                                     GENERAL

9.1 DISCLOSURE SCHEDULES - The Schedules referred to in Section 3.1 and Section
3.2 of this Agreement reflect information supplied to Purchaser and Vendors,
respectively, in the course of their investigation of the Company and Purchaser,
respectively. Vendors may supplement or amend any Schedule from time to time
prior to or at the Closing, by notice in accordance with the terms of this
Agreement, including by delivering one or more supplements or amendments to
correct any matter which would constitute a breach of any representation or
warranty contained herein. All references to any Schedule hereto which is
supplemented or amended as provided in this Section 9.1 shall, for all purposes,
whether or not the transactions contemplated hereby occur, be deemed to be a
reference to such Schedule as so supplemented or amended.

9.2 PUBLIC NOTICES - All public notices to third parties and all other publicity
concerning the transactions contemplated by this Agreement shall be jointly
planned and coordinated by the Vendors and the Purchaser and no Party shall act
unilaterally in this regard without the prior approval of the Vendors and the
Purchaser or the other of them.

9.3 EXPENSES - The expenses incurred by each party hereto in connection with
this Agreement and the transactions provided herein shall be borne by such
party. Notwithstanding the foregoing, all professional fees incurred by the
Vendors in connection with the transactions contemplated by this Agreement shall
be borne by the Vendors and all expenses incurred in connection with the
preparation of any environmental reports after the date of execution of this
Agreement with respect to the real property owned or leased by the Company shall
be borne by the Purchaser (which reports shall remain the property of the
Purchaser following the Closing).

9.4 TIME - Time shall be of the essence hereof.

9.5 NOTICES - Any notice, direction or other document required or permitted to
be given hereunder or for the purposes hereof (hereinafter in this Section 9.5
called a "notice") to any Party shall be in writing and shall be sufficiently
given if delivered personally, or if sent by prepaid registered mail or if
transmitted by telex, facsimile or other form of recorded communication tested
prior to transmission to such Party:

         (a)      in the case of a notice to the Vendors to:

                            Robert E. Ramsey, Jr.
                            222 Main Street East
                            Mesa, Arizona 85201



                                       40
<PAGE>   41
                  with a copy to the Vendors' Counsel at

                            Gallagher & Kennedy, P.A.
                            2600 North Central Avenue
                            Phoenix, AZ 85004-3020
                            Attention: Terence W. Thompson, Esq.
                            with a facsimile number of (602) 257-9459.

         (b)      in the case of a notice to the Purchaser at

                            8401 E. Indian School Road
                            Scottsdale, Arizona  85251
                            Attention:  Warren S. Rustand
                            with a facsimile number of (602) 481-3328

                  with a copy to Purchaser's Counsel at

                            O'Connor Cavanagh Anderson
                            Killingsworth & Beshears, P.A.
                            One E. Camelback Road, Suite 1100
                            Phoenix, Arizona  85012
                            Attention:  John B. Furman, Esq.
                            with a facsimile number of (602) 263-2900

or at such other address as the Party to whom such writing is to be given shall
have last notified the Party giving the same in the manner provided in this
section. Any notice delivered in person to the Party to whom it is addressed as
hereinbefore provided shall be deemed to have been given and received on the day
it is so delivered at such address, provided that if such day is not a Business
Day then the notice shall be deemed to have been given and received on the first
Business Day next following such day. Any notice mailed as aforesaid shall be
deemed to have been given and received on the seventh Business Day following the
date of its mailing. Any notice transmitted by telex, facsimile or other form of
recorded communication shall be deemed given and received on the Business Day of
its transmission.

9.6 ASSIGNMENT - Neither this Agreement nor any rights or obligations hereunder
shall be assignable by any Party without the prior written consent of the other
Party hereto; provided, however, that the Vendors shall be entitled to assign
their rights to receive payments hereunder (or under any related documents) to
any person without the consent of the Purchaser. Subject thereto, this Agreement
shall enure to the benefit of and be binding upon the Parties and their
respective heirs, executors, administrators and successors (including any
successor by reason of amalgamation of the Purchaser) and permitted assigns.

9.7 FURTHER ASSURANCES - The Parties hereto shall with reasonable diligence do
all such things and provide all such reasonable assurances as may be required to
consummate the


                                       41
<PAGE>   42
transactions contemplated hereby, and each Party shall provide such further
documents or instruments required by any other Party as may be reasonably
necessary or desirable to effect the purpose of this Agreement and carry out its
provisions, whether before or after the Closing.

9.8 SEVERABILITY - If any covenant or provision of this Agreement (other than
the provisions pertaining to payments to be made to the Vendors) is prohibited
in whole or in part in any jurisdiction, such covenant or provision shall, as to
such jurisdiction, be ineffective to the extent of such prohibition without
invalidating the remaining covenants and provisions hereof and shall, as to such
jurisdiction, be deemed to be severed from this Agreement to the extent of such
prohibition.

9.9 COUNTERPARTS - This Agreement may be executed by the Parties in separate
counterparts (and by facsimile transmission) each of which when so executed and
transmitted or delivered shall be an original, but all such counterparts shall
together constitute one and the same instrument.

9.10 MEDIATION AND ARBITRATION - Any dispute, controversy or claim (including
without limitation tort claims, requests for provisional remedies or other
interim relief, and issues as to the arbitrability of any matter) arising out of
or relating to this Agreement, or breach thereof, (a) shall be settled by
negotiation at a meeting between the Vendors and the chief executive officer of
the Purchaser held in Phoenix, Arizona within 5 days after notice given by any
party hereto to the other parties hereto, and (b) if within that 5 day period
settlement cannot be achieved through negotiation, it shall be settled (i)
first, by the parties trying in good faith to settle the dispute by mediation
under the Commercial Mediation Rules of the American Arbitration Association
("AAA") (such mediation session to be held in Phoenix, Arizona and to commence
with 10 days of the appointment of the mediator by the AAA), and (ii) if the
controversy, claim or dispute cannot be settled by mediation, then by
arbitration administered by the AAA under its Commercial Arbitration Rules and
in accordance with its expedited hearing procedures (such arbitration to be held
in Phoenix, Arizona before a single arbitrator by the AAA), and judgment on the
award rendered by the arbitrator may be entered in any court having jurisdiction
thereof.

9.11 ATTORNEYS' FEES - If any action is necessary to enforce the terms of this
Agreement, the prevailing party shall be entitled to recover from the other
party all costs, expenses and fees incurred by the prevailing party (including
reasonable attorneys' fees, costs and disbursements) in addition to other relief
to which the prevailing party may be entitled.



                                       42
<PAGE>   43
     IN WITNESS WHEREOF, the Parties have set their hand this 25th day of
February, 1997 through our trust in God and our service to others. . . . for
life.

                                Rural/Metro Corporation, a Delaware corporation


                                By:
                                    ----------------------------------------
                                      James H. Bolin, President


                                    ----------------------------------------
                                      Robert E. Ramsey, Jr., individually



                                       43
<PAGE>   44
                                CONSENT OF SPOUSE

                  The undersigned spouse of Robert E. Ramsey, Jr., who is a
party to the above Agreement of Purchase and Sale, pertaining to the sale of the
stock of Southwest Ambulance of Casa Grande, Inc., an Arizona corporation (the
"Agreement"), hereby declares, contemporaneously with the execution of the
Agreement, that she has read the Agreement in its entirety, and being fully
convinced of the wisdom and equity of the terms of the Agreement, and in
consideration of the premises and of the provisions of the Agreement, hereby
expresses her consent to the execution and consummation of the Agreement by
Robert E. Ramsey, Jr.

                  The undersigned further agrees that in the event of the death
of Robert E. Ramsey, Jr., the dissolution of their marriage, or any occurrence
contemplated by the Agreement that gives rise to any liability or obligation of
Robert E. Ramsey, Jr., the provisions of the Agreement shall be binding upon her
to the extent of any community property she may now have or hereafter acquire,
and any and all separate property that she may hereafter possess which arises
(directly or indirectly) from any consideration given to Robert E. Ramsey, Jr.
pursuant to the Agreement or any agreement executed in connection thereto.

                  The undersigned further agrees that she will, at any and all
times, make, execute and deliver such instruments and documents as may be
reasonably necessary to carry out the provisions of the Agreement, provided that
no such documents require the incurring of any liabilities in excess of that
already provided in the Agreement.

                  Dated this 25th day of February, 1997.




                                           ------------------------------------
                                           Virginia (Jenny) L. Norton




                                       44
<PAGE>   45
                                   APPENDIX J

                                    (i) All real property leased by the Company
from NRM Properties, Inc. or Chaparral Properties, Inc. (the "Leased
Properties") is set forth in Schedule "J" and is zoned as set forth on Schedule
"J", pursuant to the ordinances of the applicable cities, towns, villages or
townships identified on such Schedule "J", and is not located in an area that
has been identified by the Secretary of Housing and Urban Development as an area
of special flood hazard. The uses to which such real property are presently put
do not violate or conflict with the applicable provisions of such zoning
ordinances, or other zoning laws of such cities, towns, villages or townships or
any other governmental body.

                                    (ii) The Company does not sublease any of
its Leased Properties. The Company does not lease any of its owned real
property.

                                    (iii) Neither the Company nor any Vendor,
nor any one or more of them, has retained or engaged any real estate broker,
commission agent or other person who is or may be entitled to payment of a
commission or finder's fee or other compensation in connection with any of the
Leased Properties.

                                    (iv) As to the Leased Properties, the
present use and operation of the real property is authorized by and in
compliance with all applicable building, fire, health, labor and safety laws,
ordinances, rules and regulations applicable to the real property, including,
without limitation, OSHA, and the Americans with Disabilities Act, and there is
no litigation, action, proceeding or any present plan or study by any
governmental authority or any private person or entity which in any way would
affect the present use and operation of the real property. There are in
existence all licenses, permits and approvals that are required for the use and
operation of the Leased Properties, and no Vendor has any reason to believe that
any of the same are in jeopardy of being revoked or not being reissued upon
expiration.

                                    (v) No Vendor has any knowledge of any fact
or condition existing which would result or could result in the termination or
reduction of the current access from the Leased Properties to existing public
roads and highways, or of any reduction in sewer or other utility services
presently serving the Leased Properties. Leased Properties have direct access to
dedicated roads and highways and all utility services to the Leased Properties
are furnished through dedicated or perpetual easements.

                                    (vi) As to the Leased Properties, no Vendor
has received notice from any insurance company of any defects or inadequacies in
such real property or any part thereof which would materially and adversely
affect the insurability of the real property or the premiums for the insurance
thereof.

                                    (vii) As to the Leased Properties, no Vendor
has failed to disclose any material conditions of disrepair or other adverse
conditions or defects with respect to such


                                  Appendix J-1
<PAGE>   46
real property or any portion thereof of which that Vendor has knowledge or
which, with the exercise of reasonable diligence, that Vendor should have known.

                                    (viii) As to the Leased Properties, no
Vendor has any knowledge of any planned public improvement which might result in
a special assessment levied against such real property. If any Vendor becomes
aware of any of the foregoing (whether arising before or after the date hereof)
after the date hereof, but prior to Closing, that Vendor shall give prompt
written notice thereof to Purchaser prior to Closing.



                                  Appendix J-2
<PAGE>   47
                                 APPENDIX 4.1(j)

                          FORM OF INVESTMENT AGREEMENT

         See attached.
<PAGE>   48

                   AMENDMENT TO AGREEMENT OF PURCHASE AND SALE

WHEREAS, RURAL/METRO CORPORATION, a Delaware corporation ("Purchaser"), and
ROBERT E. RAMSEY, JR., an individual, ("Vendor"), signed that certain Agreement
of Purchase and Sale, made as of February 25, 1997 (the "Agreement"), with
respect to the purchase of all the issued and outstanding shares of the stock of
SOUTHWEST AMBULANCE OF CASA GRANDE, INC., an Arizona corporation (the
"Company").

WHEREAS, Purchaser and Vendor desire to extend the Closing Date (as defined in
the Agreement), and amend the Agreement as set forth in this Amendment.

NOW, THEREFORE, in consideration of the premises and the mutual agreements and
covenants herein contained (the adequacy of which consideration as to each of
the parties hereto is hereby mutually admitted), the parties hereto hereby amend
the Agreement as follows:

         1. Section 1.1(e) of the Agreement is hereby modified to read as
follows:

                 "Closing Date" means the earlier of May 30, 1997 or
                 five (5) business days following the satisfaction or
                 waiver of all conditions precedent to the
                 transactions contemplated by this Agreement, or such
                 other date as the Parties may mutually agree in
                 writing;"

         2. The last sentence of Section 8.1 of the Agreement is hereby amended
to read as follows:

                 "In addition, this Agreement shall terminate if the
                 Closing has not occurred by May 30, 1997, unless
                 extended by written agreement of the Parties hereto."

         3. This Amendment shall constitute a written extension as contemplated
by the original Section 8.1 of the Agreement.

         4. The terms and conditions set forth in the letter agreement, dated
April 15, 1997, by and among Purchaser, Bob Ramsey and Barry Landon, Trustee for
the Southwest ESOP, a copy of which letter agreement is attached hereto as
Exhibit A, shall constitute amendments and supplemental provisions to the
Agreement, as applicable.
<PAGE>   49
         5. This Amendment may be executed by the parties hereto in separate
counterparts (and by facsimile transmission) each of which when so executed and
transmitted or delivered shall be an original, but all such counterparts shall
together constitute one and the same instrument.

         IN WITNESS WHEREOF, the parties hereto have set their hand as of the
15th day of April, 1997, through our trust in God and our service to others ...
for life.

                                        RURAL/METRO CORPORATION, a
                                        Delaware corporation


                                        By: /s/ James H. Bolin
                                            ------------------------------------
                                            James H. Bolin, President

                                        /s/ Robert E. Ramsey, Jr.
                                        ---------------------------------------
                                        Robert E. Ramsey, Jr., individually


I HEREBY CONSENT TO THE TERMS
OF THIS AMENDMENT as of the 15th day
of April, 1997:

/s/ Virginia (Jenny) L. Norton
- -------------------------------
Virginia (Jenny) L. Norton


                                        2
<PAGE>   50
                                                                       EXHIBIT A


April 15, 1997


James H. Bolin, President
Rural/Metro Corporation
8401 E. Indian School Road
Scottsdale, Arizona 85251

Dear Jim:

        In response to our phone conversation in which we discussed the
extension of the Agreement of Purchase and Sale between Rural/Metro and SW
General, Inc., Southwest Ambulance of Casa Grande, Inc., Medical Emergency
Devices and Services (MEDS), Inc. and Southwest General Services, Inc., I am
asking for your acknowledgement of the following clarifications:

1. SW General, Inc. shall, effective May 1, 1997, enter into a lease for the
3.5 acres of land adjacent to our facility at 617 W. Main. This land has been
used by Southwest since last year without any rental fees being paid. The need
for a new lease was disclosed during the due diligence process and will be
added to the Book of Schedules under Schedule "J".

2. The original "Normalization Work Sheet" which was presented to you in
January of this year was omitted from the Schedules. The Normalization Work
Sheet will be added to the Book of Schedules under Section "H". 

Additionally, Rural Metro, as presented in the Normalization Worksheet, has
acknowledged the annual draws/management fees paid to Bob Ramsey associated
with the ownership of the "S" corporations and SW General, Inc. These draws/
management fees shall continue in practice until the closing of the Agreements
at which time they shall cease and the start up of the Ramsey employment
contract shall take effect.

3. Prior to 12/31/96 the equity of Southwest Ambulance of Casa Grande, Inc. and
MEDS were drawn out by Bob Ramsey and loaned back to the corporations as
represented by the "Notes Payable" in Schedules "A" & "C", on the respective
balance sheets of the corporations. Subsequent to 1/1/97, Bob Ramsey has drawn
the 
<PAGE>   51
equity out of Southwest General Services, Inc. The equity and all state and
federal taxes have been met by these transactions.

4. From the time period from January 1, 1997 through the date of closing all
profits of the identified "S" corporations are passed on to SW General, Inc.
through a management fee resulting in a zero equity position. This action is
reflected in the financial statements of February and March, 1997 as
represented to Rural/Metro through the due diligence process. (See Schedule "A")

5. As identified in Section 5.1(b)(ii) of the Agreement, Southwest shall, prior
to close and during the normal course of business, expense such items as
management fees, annual bonus', required capital expenditures (except the two
new ambulances previously identified by SW) and miscellaneous expenses which
shall be acceptable to Rural/Metro so long as the $2,045,000 of this section is
maintained per the Agreement.

6. Two new ambulances which were previously disclosed must be funded at this
time. This expenditure, as invoiced, shall not be utilized in the debt
formulas identified in the warranties with the original Purchase and Sale
Agreement.

7. Rural/Metro acknowledges that Ramsey may exceed the $2,045,000 as identified
in section 5 above, for the purpose of purchasing the ownership interests of
William Kordsiemon in MOROKO, Inc. Utilization of these funds in excess of the
$2,045,000 will be deducted from the MEDS purchase transaction.

8. Rural/Metro re-clarifies the understanding as to Bob Ramsey's position,
responsibility and reporting structure as follows:

        - Bob Ramsey will serve as President and CEO of Southwest companies
          with direct management authority over the Arizona ambulance
          operations of Rural/Metro except where the fire department personnel
          directly operates the ambulance unit. In this capacity he shall
          report directly to Bob Edwards or to Warren Rustand and not to any
          Regional President.
        - Bob Ramsey agrees to serve as a member of the Board of Directors of
          Rural/Metro Corporation.
        - Bob Ramsey will serve in a senior executive position as a
          vice-president of Rural/Metro (reference: Employment Agreement and
          Letter of Intent) reporting to the office of the CEO under the
          direction of Warren Rustand.
<PAGE>   52
        (See also the Letter of Intent dated January 31, 1997 and the Agreements
        of Purchase and Sale dated February 25, 1997 as referenced herein and
        exhibited in Schedule "C" of the Agreement.)

        As agreed, the closing date will be extended to Friday, May 30, 1997.
Additionally, before implementation, I would like to initially meet with
Warren, Bob and yourself to review the initial and mid-term efficiencies
created by the acquisition and merging of the entities.

        this letter of agreement and extension, as signed by the parties below,
shall be incorporated into the Agreement.

        ACKNOWLEDGED AND ACCEPTED AS OF THE DATE FIRST WRITTEN ABOVE.

                                                RURAL/METRO CORPORATION



/s/ Bob Ramsey                                      /s/ James Bolin
- ------------------------------                  By: --------------------------
Bob Ramsey                                          James Bolin
                                                Its: President



/s/ Barry Landon
- ------------------------------
Barry Landon
Trustee for the Southwest ESOP



cc: Warren Rustand
<PAGE>   53
               SECOND AMENDMENT TO AGREEMENT OF PURCHASE AND SALE

WHEREAS, RURAL/METRO CORPORATION, a Delaware corporation ("Purchaser"), and
ROBERT E. RAMSEY, JR., an individual, ("Vendor"), signed that certain Agreement
of Purchase and Sale, made as of February 25, 1997, and that certain Amendment
to Agreement of Purchase and Sale, made as of April 15, 1997 (together, the
"Agreement"), with respect to the purchase of all the issued and outstanding
shares of the stock of SOUTHWEST AMBULANCE OF CASA GRANDE, INC., an Arizona
corporation (the "Company"). All defined terms used herein but not otherwise
defined shall have the meaning set forth in the Agreement.

WHEREAS, Purchaser and Vendor desire to extend the Closing Date (as defined in
the Agreement), and amend the Agreement as set forth in this Second Amendment.

NOW, THEREFORE, in consideration of the premises and the mutual agreements and
covenants herein contained (the adequacy of which consideration as to each of
the parties hereto is hereby mutually admitted), the parties hereto hereby amend
the Agreement as follows:

         1. Section 1.1(e) of the Agreement is hereby modified to read as
follows:

                 "Closing Date" means the earlier of July 31, 1997 or
                 five (5) business days following the satisfaction or
                 waiver of all conditions precedent to the
                 transactions contemplated by this Agreement, or such
                 other date as the Parties may mutually agree in
                 writing;"

         2. The last sentence of Section 8.1 of the Agreement is hereby amended
to read as follows:

                 "In addition, this Agreement shall terminate if the
                 Closing has not occurred by July 31, 1997, unless
                 extended by written agreement of the Parties hereto."

         3. This Second Amendment shall constitute a written extension as
contemplated by the original Section 8.1 of the Agreement.

         4. The terms and conditions set forth in the letter agreement, dated
May 30, 1997, by and among Purchaser, Bob Ramsey and Barry Landon, Trustee for
the Southwest ESOP, a copy of which letter agreement is attached hereto as
Exhibit A (the "Letter Agreement"), shall constitute amendments and supplemental
provisions to the Agreement,
<PAGE>   54
as applicable, subject to the following: Paragraph 5 of the Letter Agreement
shall be interpreted as a $277,000 indemnification threshold with respect to
claims other than Third Party Claims, in the same manner as the $50,000
indemnification threshold for Third Party Claims in Section 7.5 of the Agreement
of Purchase and Sale regarding SW General, Inc., and the $277,000
indemnification threshold shall be an aggregate threshold against the liability
of the Vendor for indemnification arising from any of the Agreements of Purchase
and Sale pertaining to the Southwest Companies.

         5. The Vendor represents and warrants that the Company is and shall be
at the Closing a valid S-Corporation as defined in Section 1361 of the Code.

         6. This Second Amendment may be executed by the parties hereto in
separate counterparts (and by facsimile transmission) each of which when so
executed and transmitted or delivered shall be an original, but all such
counterparts shall together constitute one and the same instrument.

         IN WITNESS WHEREOF, the parties hereto have set their hand as of the
30th day of May, 1997, through our trust in God and our service to others ...
for life.

                                        RURAL/METRO CORPORATION, a
                                        Delaware corporation


                                        By: /s/ James H. Bolin
                                           ____________________________________
                                           James H. Bolin, President

                                         /s/ Robert E. Ramsey, Jr.
                                        _______________________________________
                                        Robert E. Ramsey, Jr., individually


I HEREBY CONSENT TO THE TERMS 
OF THIS SECOND AMENDMENT as of 
the 30th day of May, 1997:

/s/ Virginia (Jenny) L. Norton
_______________________________
Virginia (Jenny) L. Norton


                                        2
<PAGE>   55
                          [SOUTHWEST AMBULANCE LETTERHEAD]


May 30, 1997



James Bolin, President
Rural/Metro Corporation
8401 E. Indian School Road
Scottsdale, Arizona 85251



Dear Jim:

We have again reached the threshold where an agreement to extend the Agreement
of Purchase and Sale between Rural/Metro Corporation and SW General, Inc.,
Southwest Ambulance of Casa Grande, Inc., Medical Emergency Devices and
Services (MEDS), Inc. and Southwest General Services, Inc. (collectively the
"Purchase Agreements") is required. The original "Closing Date" was April 15,
1997 and the first extension reset the Closing Date for May 30, 1997. Because
of the lengthy delay in closing, caused by the FTC approval process, many
actions and transactions have taken place, which under normal time constraints,
would not need to be addressed. However, We feel that some of the issues should
be acknowledged and signed off on by both parties.

Jim- I think you will find that we have discussed these items previously and
have mutually concurred. The clarification items are:

1.  The Parties reaffirm and extend through July 31, 1997 the items clarified
in the prior extension letter dated and attested to on April 15, 1997.

2.  The stock purchase price value for Rural/Metro stock shall be supported by
a twelve month average daily stock valuation equal to $33.00 per share.
Rural/Metro has provided an eleven month summary which equates to a daily per
share value of $33.90. The parties agree, that should for any reason, the
twelve month average drop below the established $33.00 value that an adjustment
shall be made to match the twelve month average.

3.  The Agreement of Purchase and Sale "Schedules" shall include the Department
of Health Services White Paper presented by Rural/Metro and Southwest, the
judges findings of fact and conclusion of law with recommended decision, and
the Directors final decision and order.
<PAGE>   56
4.  Southwest had previously identified six new ambulances which had been
purchased and excluded from the Vendors debt covenants. Subsequently,
Rural/Metro needed to purchase four of the units for their San Diego contract.
Southwest is in the process of financing the remaining two units over a 36 month
period with said units to continue to be excluded from the Vendors debt
covenants. Additionally, six new units are on order by Southwest to fulfill our
service requirements. The six units are also excluded from any Vendor
covenants/warranties of the Purchase Agreements between the parties.

5.  Reduction of term debt for the extended three month period of April-May-June
which is estimated to be $277,000 shall be applied to offset against any
warranty conditions of the Vendors pursuant to the Purchase Agreements.

6.  Article 9-Section 9.3 (Expenses) of the Agreement of Purchase and Sale
dated February 25, 1997 previously stipulated that "expenses incurred by each
party hereto in connection with this Agreement and the transactions provided
herein shall be borne by such party. Notwithstanding the foregoing, all
professional fees incurred by the Vendors in connection with the transactions
contemplated by this Agreement shall be borne by the Vendors and all expenses
incurred in connection with the preparation of any environmental reports after
the date of execution of this Agreement with respect to the real property owned
or leased by the Company shall be borne by the Purchaser."

Article 9-Section 9.3 is hereby amended as follows: "Notwithstanding the
foregoing, all professional and legal fees incurred by the Vendors prior to the
original selected Close Date of March 15, 1997 shall be borne by the Vendors
and all professional and legal fees incurred by Vendors after the original
selected Close Date, up to a maximum amount of $25,000.00, shall be borne by
the Southwest Companies. Additionally, all legal fees of Patrick McGroder shall
be paid by the Southwest Companies."

7.  As identified in Section 5.1(b)(ii) of the Agreement, Southwest shall,
prior to close and during the normal course of business, expense such items as
management fees, annual bonus', "S" Corps draws for the purpose of profits,
compensation and taxes, required capital expenditures (with the exception of
the previously identified eight ambulances) and miscellaneous expenses which
shall be acceptable to Rural/Metro so long as the $2,500,000 of this section is
maintained per the Agreement.

The previous identified borrowing limitation of $2,045,000 is hereby replaced
via this Letter of Agreement. This change is mandated by the additional credit
line pressures 
<PAGE>   57
As mutually agreed, the closing date will be extended to July 31, 1997.

This letter of agreement, amendment and extension, as signed by the parties
below, shall be incorporated into the Agreements of Purchase and Sale dated
February 25, 1997.

        ACKNOWLEDGED AND ACCEPTED AS OF THE DATE FIRST WRITTEN ABOVE.

                                                RURAL/METRO CORPORATION



                                                    /s/ James Bolin
- ------------------------------                  By: --------------------------
          Bob Ramsey                                       James Bolin



Witness and Trustee:



- ------------------------------
        Barry Landon



(renw12doc)

<PAGE>   1
                                                                EXHIBIT 10.51
                         AGREEMENT OF PURCHASE AND SALE



     THIS AGREEMENT OF PURCHASE AND SALE ("Agreement") is made as of this 25th
day of February, 1997


BETWEEN:

                 Rural/Metro Corporation, a Delaware corporation
                                  ("Purchaser")

                                      -and-

                Robert E. Ramsey, Jr., an individual ("Ramsey"),
                         Patrick McGroder, Barry Landon,
                                 and Gary Ramsey
                          (collectively, the "Vendors"
                          and individually a "Vendor")


RECITALS:


     WHEREAS, the Vendors own and control all the issued and outstanding shares
of the stock of Southwest General Services, Inc., an Arizona corporation (the
"Company");

     AND WHEREAS, the Vendors desire to sell and the Purchaser desires to
purchase all of the said issued and outstanding shares of the stock of the
Company owned by the Vendors all upon and subject to the terms and conditions
hereinafter set forth;

     NOW THEREFORE, in consideration of the premises and the mutual agreements
and covenants herein contained (the adequacy of which consideration as to each
of the parties hereto is hereby mutually admitted), the parties hereto hereby
covenant and agree as follows:

                                    ARTICLE 1

                  DEFINITIONS AND PRINCIPLES OF INTERPRETATION

1.1 DEFINITIONS - Whenever used in this Agreement, unless there is something in
the subject matter or context inconsistent therewith, the following words and
terms shall have the respective meanings ascribed to them as follows:

     (a)  "Agreement" means this Agreement of Purchase and Sale and all
          instruments supplemental hereto or in amendment or confirmation
          hereof;
<PAGE>   2
     (b)  "Business" means the business presently carried on by the Company
          consisting of the provision of emergency and non-emergency medical
          transportation services and related billing and management services;

     (c)  "Business Day" means a day other than a Saturday, Sunday or any day on
          which the principal commercial banks located in Phoenix, Arizona are
          not open for business during normal banking hours;

     (d)  "Closing" means the completion of the sale to and purchase by the
          Purchaser of the Purchased Shares hereunder by the transfer and
          delivery of documents of title thereto and the payment of the purchase
          price therefore as contemplated herein;

     (e)  "Closing Date" means the earlier of April 15, 1997 or five (5)
          business days following the satisfaction or waiver of all conditions
          precedent to this transaction, or such other date as the Parties may
          mutually agree in writing;

     (f)  "Closing Time" means 10 o'clock a.m., Phoenix, Arizona local time, on
          the Closing Date, or such other time on the Closing Date as the
          Parties may agree;

     (g)  "Employment Agreement" means the employment agreement to be entered
          into by and between Ramsey and Purchaser at the Closing, as
          contemplated by the Agreement of Purchase and Sale of even date
          herewith pertaining to SW General, Inc., an Arizona corporation.

     (h)  "Financial Statements" means the unaudited financial statements of the
          Company, including a balance sheet as of December 31, 1996, and an
          operating statement for the twelve (12) month period then ended;
          copies of which are annexed as Schedule "A" hereto;

     (i)  "Parties" means, collectively, the Vendors and the Purchaser, and
          "Party" means any one of them;

     (j)  "Person" means any individual, corporation, partnership, limited
          liability company, trust or unincorporated association or similar
          entity, and pronouns have a similarly extended meaning;

     (k)  "Purchase Price" means the purchase price to be paid by the Purchaser
          to the Vendors for the Purchased Shares as provided in Section 2.1
          hereof;

     (l)  "Purchased Shares" means all the issued and outstanding common shares
          of the stock of the Company;

     (m)  "Southwest Companies" means, collectively, the Company, Southwest
          Ambulance of Casa Grande, Inc., Medical Emergency Devices and Services
          (MEDS), Inc., and SW General, Inc.


                                       2
<PAGE>   3
Terms defined in the preamble, recitals and body of this Agreement shall have
the same meanings herein as are ascribed thereto in the preamble, recitals and
body.

1.2 GENDER AND NUMBER - Words importing the singular include the plural and vice
versa; words importing gender include all genders.

1.3 ENTIRE AGREEMENT - This Agreement, including the Schedules and Exhibits
hereto, together with the agreements, certificates, and other documents and
instruments to be delivered pursuant hereto, constitute the entire agreement
between the Parties pertaining to the subject matter hereof and supersede all
prior agreements, understandings, negotiations and discussions, whether oral or
written, of the Parties and there are no warranties, representations or other
agreements between the Parties in connection with the subject matter hereof
except as specifically set forth herein and therein.

1.4 WAIVERS, ETC. - No supplement, modification, waiver or termination of this
Agreement shall be binding unless executed in writing by the Party to be bound
thereby. No waiver of any of the provisions of this Agreement, in whole or in
part, shall be deemed or shall constitute a waiver of any other provisions
hereof (whether or not similar), nor shall such waiver constitute a continuing
waiver unless otherwise expressly provided.

1.5 OTHER WORDS AND PHRASES - In this Agreement, unless otherwise expressly
provided (i) the words "hereof", "herein", "hereto" and "hereunder" and words of
similar import refer to this Agreement as a whole and not to the particular
Article, Section, Subsection, paragraph or other subdivision, and (ii) all
references to designated "Articles", "Sections", "Subsections", "paragraphs" or
other subdivisions are to the designated Articles, Sections, Subsections,
paragraphs and other subdivisions of this Agreement.

1.6 HEADINGS - The Article and Section headings contained herein are included
solely for convenience of reference, are not intended to be full or accurate
descriptions of the content thereof and shall not be considered part of this
Agreement.

1.7 APPLICABLE LAW - This Agreement and the rights, obligations and relations of
the Parties shall be governed by and construed in accordance with the laws of
the State of Arizona and the federal laws of the United States applicable
therein.

1.8 ACCOUNTING TERMS - All accounting terms shall have the meanings ascribed to
them in accordance with generally accepted accounting principles consistently
applied, and all references to "generally accepted accounting principles" shall
be deemed to be, unless otherwise specified, reference to accounting principles
which are generally accepted in the United States.

1.9 SCHEDULES AND APPENDICES - The following are the schedules and appendices
attached to and incorporated in this Agreement by reference and deemed to be an
integral part hereof:

     Schedule "A" - Financial Statements

     Schedule "B" - Authorized and Issued Share Capital, Share Ownership, and
                    Purchase Price Allocation for each of the Vendors


                                       3
<PAGE>   4
     Schedule "C" - [Intentionally Omitted]

     Schedule "D" - [Intentionally Omitted]

     Schedule "E" - Operating Licenses

     Schedule "F" - Undisclosed Liabilities, Guaranties and Indemnities

     Schedule "G" - Absence of Changes

     Schedule "H" - Unusual Transactions

     Schedule "I" - Liens, Charges and Encumbrances

     Schedule "J" - Real Property Leases and Owned Real Property

     Schedule "K" - Vehicular Equipment Owned or Leased

     Schedule "L" - Revenue Contracts

     Schedule "M" - Contracts to Purchase Goods/Services

     Schedule "N" - Employment Contracts, Collective Agreements, Pension or
                    Similar Plans, Unfair Labor Practice Complaints

     Schedule "O" - Litigation

     Schedule "P" - Employees over $40,000

     Schedule "Q" - Insurance Policies

     Schedule "R" - Intellectual Property

     Schedule "S" - Third Party Approvals

     Schedule "T" - Environmental Matters

     Schedule "U" - Subsidiaries and Affiliates

     Schedule "V" - Bank Accounts

     Schedule "W" - Purchaser's Disclosure Schedule

     Appendix "J" - Certain Real Estate Representations and Warranties


                                       4
<PAGE>   5
                                    ARTICLE 2

                                PURCHASE AND SALE

2.1 PURCHASE PRICE - At the Closing Time, the Vendors shall sell and the
Purchaser shall purchase the Purchased Shares for an aggregate purchase price of
Six Million, Five Hundred Thousand Dollars ($6,500,000), all of which shall be
paid in immediately available funds at the Closing. The cash consideration shall
be allocated amongst the Vendors as set forth in Schedule "B" hereto.

2.2 ACTION BY VENDORS AND PURCHASER AT THE CLOSING TIME -

     (a)  Delivery of Certificates by the Vendors, etc. - The Vendors shall
          transfer and deliver to the Purchaser at the Closing stock
          certificates representing all the Purchased Shares duly endorsed in
          blank for transfer or accompanied by irrevocable stock transfer powers
          of attorney duly executed in blank, in either case by the holders of
          record thereof, free and clear of all liens, claims, rights, charges,
          encumbrances and security interests of whatsoever kind and nature. The
          Vendors shall take such steps as shall be necessary to cause the
          Company to enter the Purchaser or its nominee upon the books of the
          Company as the holder of the Purchased Shares and to issue one or more
          share certificates to the Purchaser representing the Purchased Shares;

     (b)  Payment to Vendors - At the Closing, the Purchaser shall pay to the
          Vendors the Purchase Price of Six Million, Five Hundred Thousand
          Dollars ($6,500,000) by wire transfer according to the wire
          instructions provided to the Purchaser by the Vendors prior to the
          Closing.

     (c)  Delivery of Other Documents - The Vendors and Purchaser shall deliver
          all such other documents at the Closing as contemplated herein.

2.3 [INTENTIONALLY OMITTED]

2.4 PLACE OF CLOSING - The Closing shall take place at the Closing Time at the
offices of O'Connor, Cavanagh, Anderson, Killingsworth & Beshears, P.A., One E.
Camelback Road, Suite 1100, Phoenix, Arizona or at such other place as may be
agreed upon by the Vendors and the Purchaser.

2.5 TAX TREATMENT - The acquisition of the Company shall be a purchase of stock
which is intended to be treated as a purchase of assets pursuant to an election
under Section 338(h)(10) of the Internal Revenue Code of 1986, as amended (the
"Code").


                                       5
<PAGE>   6
                                    ARTICLE 3

                         REPRESENTATIONS AND WARRANTIES

3.1 REPRESENTATIONS AND WARRANTIES OF VENDORS - To induce Purchaser to enter
into this Agreement and to perform its obligations hereunder, and with full
knowledge that Purchaser will rely thereon, the Vendors hereby represent and
warrant, jointly and severally, to the Purchaser the truth, accuracy and
completeness of the following:

     (a)  Enforceability of Obligations - This Agreement and each of the other
          agreements referenced herein to which one or more Vendors is a party
          have been duly executed and delivered by each of such Vendors, and
          each of the Agreement and such other agreements constitutes a valid
          and binding obligation of each of the Vendors enforceable against each
          of them in accordance with its terms.

     (b)  Right to Sell - The Vendors:

          (i)       are the sole beneficial owners of the Purchased Shares
                    (which shares constitute all of the issued and outstanding
                    shares of the stock of the Company); and

          (ii)      are the holders of record of all the Purchased Shares (which
                    shares constitute all of the issued and outstanding shares
                    of the stock of the Company) and have good and marketable
                    title to, and rightful possession of, all of the Purchased
                    Shares free and clear of any liens, claims, rights, charges,
                    encumbrances, security interests of whatsoever kind and
                    nature or rights of others (other than the rights of the
                    Purchaser hereunder) and no Person (other than the Purchaser
                    hereunder) has any agreement, option or any rights capable
                    of becoming an agreement or option for the acquisition of
                    the Purchased Shares or any other shares in the Company.

     (c)  Licenses, Registrations and Compliance - The Company is registered,
          licensed or otherwise qualified as a corporation to do business in
          each jurisdiction in which the nature of its business or the property
          owned or leased by it makes such registration, licensing or other
          qualification necessary, and such registrations, licenses or
          qualifications (as the case may be) are in good standing. The Company
          is not in violation in any material respect of any applicable laws,
          regulations, orders, rules, decrees, ordinances, licenses or operating
          authorities. The licenses and operating authorities issued by federal,
          state or local authorities to the Company, copies of which are
          attached hereto as Schedule "E" (the "Operating Licenses"), comprise
          all the material licenses, permits and operating authorities held in
          respect of the Business. The Operating Licenses are all of the
          material operating authorities necessary or reasonably required for
          the carrying on of the Business as presently conducted and the
          ownership and use of its assets, property, and premises. Except as
          described in Schedule "E" and subject to applicable regulations and
          policies of the Arizona Department of Health Services, the Operating
          Licenses are not subject to review or notification and there is no


                                       6
<PAGE>   7
          litigation, arbitration or other proceeding pending or threatened
          which would materially and adversely affect the use of the Operating
          Licenses by the Business or which may result in the revocation,
          cancellation, suspension or any materially adverse modification of any
          of such Operating Licenses.

     (d)  Organization and Valid Existence - The Company is duly incorporated
          and organized, validly existing and in good standing under the laws of
          the State of Arizona, and has all necessary corporate power, authority
          and capacity to own and lease its property and assets and to carry on
          the Business as presently conducted by it. Each of the Vendors has the
          full right, power, authority and capacity to execute and deliver this
          Agreement and the other agreements referenced herein to which any such
          Vendor is a party, to consummate the transactions contemplated hereby
          and thereby, and to fully and timely perform its obligations hereunder
          and thereunder.

     (e)  Capitalization - The authorized capital stock of the Company and the
          total number of shares of the Company's capital stock presently issued
          and outstanding are as set forth on Schedule "B". All issued and
          outstanding common shares of the Company have been duly authorized and
          validly issued, are fully paid and non-assessable, and are free of
          pre-emptive rights.

     (f)  Financial Statements - Copies of the Financial Statements are each
          true, complete and correct and have been prepared on an accrual basis
          from the books and records of the Company, in accordance with
          generally accepted accounting principles applied on a basis consistent
          with that of the preceding periods. The Financial Statements each
          fairly present in all material respects a true, accurate and complete
          statement of the financial condition, assets, liabilities and results
          of operations of the Company as of the dates and for the periods set
          forth therein.

     (g)  Absence of Undisclosed Liabilities - Except as fully disclosed on
          Schedule "F" hereto, the Company has no liabilities or obligations,
          fixed or contingent, accrued or unaccrued that are not fully and
          properly reflected, or adequately reserved against, on the December
          31, 1996 balance sheet of the Company included in the Financial
          Statements, excepting only those liabilities and obligations incurred
          by the Company in the ordinary course of its business between the date
          of such balance sheet and the Closing Date, none of which liabilities
          is individually or are collectively material, incurred in violation of
          this Agreement, or would require accrual and/or disclosure under
          generally accepted accounting principles.

     (h)  Guaranties and Indemnities - Schedule "F" hereto contains a true,
          complete and correct list of all contracts and agreements pursuant to
          which the Company has guaranteed or indemnified any debt, liability or
          obligation of any other person or entity, including, without
          limitation, any Vendor (including, without limitation, the execution
          of any document obligating the Company with respect to any performance
          or other bond), or pursuant to which the Company has pledged or
          otherwise encumbered any of its assets. Except as disclosed in
          Schedule "F" hereto, the Company is not indebted to any Vendor, nor is
          any Vendor indebted


                                       7
<PAGE>   8
          to the Company in any amount for any purpose. Except as disclosed in
          Schedule "F" hereto, the Company has not agreed to give any guaranty
          of indebtedness or other obligations of third parties or made any
          other commitment by which the Company is, or is contingently,
          responsible for such indebtedness or other obligation.

     (i)  Tax Matters - The Company has duly and timely filed all federal,
          state, county and local income, franchise, capital, sales or use,
          excise, fuel, escheatment, property or other tax returns, reports or
          filings required by any law or regulation to be filed by it and has
          duly paid all taxes, assessments and reassessments, and all other
          taxes, duties, governmental charges, penalties, interest and fines due
          and payable by it on or before the date hereof.

          The federal, state, county and local income tax returns of the Company
          provided to Purchaser are accurate in all respects.

          There are no actions, suits, proceedings, inquiries, investigations or
          claims of any nature or kind whatsoever now pending or, to the best
          knowledge of Vendors, after due inquiry, threatened, against the
          Company with respect to any such returns or reports, or any such
          taxes, or any matters under discussion with any federal, state,
          county, local or other authority relating to such taxes.

          The Company has not received from any authority any assessment,
          reassessment or notice of underpayment of any taxes or other penalty
          or charges and no such notice is reasonably to be expected.

          There is no misrepresentation that is attributable to wilful default
          or fraud in tax returns of the Company previously filed.

          No consents extending or waiving the time limited for reassessment of
          any taxes, duties, governmental charges, penalties, interest or fines,
          or any statutes of limitations related thereto have been filed with
          respect to the Company for any fiscal year.

          The Company has withheld from each payment made to any of its
          officers, directors, former directors, and employees and former
          employees the amount of all taxes and other deductions (including
          without limitation, income taxes, unemployment, disability, and other
          required taxes and contributions) required to be withheld and has paid
          the same together with the employer's share of same, if any (to the
          extent required to be paid so no such amount is past due), to the
          proper tax or other receiving officers within the prescribed times and
          has filed, in complete and accurate form, all information and other
          returns required pursuant to any applicable legislation within the
          prescribed times.

          The provision made for current and deferred taxes included in the
          Financial Statements is sufficient for the payment of all accrued and
          unpaid federal, state, county and local income, franchise, capital,
          sales or use, excise, fuel, escheatment, property or other taxes,
          assessments and reassessments, duties, governmen-


                                       8
<PAGE>   9
          tal charges, penalties, interest and fines of, and payable by, the
          Company, whether or not disputed, for the period ended the date
          thereof and for all periods prior thereto.

     (j)  Absence of Changes - Except as disclosed on Schedule "G" hereto, since
          December 31, 1996 there has not been:

          (i)       any change in the condition or operations of the business,
                    assets, financial condition, or otherwise of the Company
                    other than changes in the ordinary and normal course of
                    business, none of which has been materially adverse; or

          (ii)      any damage, destruction or loss, labor trouble or other
                    event, development or condition of any character (whether or
                    not covered by insurance) materially and adversely affecting
                    the business, financial condition, assets, properties or
                    business prospects of the Company.

     (k)  Absence of Unusual Transactions - Except as disclosed on Schedule "H",
          the Company has not, other than with respect to affiliated entities of
          the Company being acquired by the Purchaser on the Closing Date, since
          December 31, 1996:

          (i)       transferred, assigned, sold or otherwise disposed of any
                    assets, granted a lien, security interest, mortgage or other
                    encumbrance in any assets, or cancelled any debts or claims
                    except only in each case in the ordinary and usual course of
                    business or to the extent such assets, liens, security
                    interests, mortgages, encumbrances, debts or claims do not
                    individually or in the aggregate exceed $20,000 (when added
                    to any dispositions, grants, or cancellations by the other
                    Southwest Companies);

          (ii)      incurred or assumed any obligation or liability which
                    individually or in the aggregate exceeds $100,000 (fixed or
                    contingent), except those listed in Schedule "F" hereto and
                    except unsecured current obligations and liabilities
                    incurred in the ordinary and normal course of business which
                    individually or in the aggregate do not exceed $100,000;

          (iii)     discharged or satisfied any lien or encumbrance, or paid any
                    obligation or liability (fixed or contingent) other than
                    liabilities included in the Financial Statements and
                    liabilities incurred since the date thereof in the ordinary
                    and normal course of business;

          (iv)      declared or made any payment of any dividend or other
                    distribution in respect of any shares of its stock as
                    applicable, or purchased or redeemed any such shares
                    thereof, or effected any subdivision, consolidation or
                    reclassification of any such shares;

          (v)       suffered or been threatened with any material adverse change
                    in its business or financial condition, business activities,
                    or business prospects,


                                       9
<PAGE>   10
                    including, without limiting the generality of the foregoing,
                    the existence or threat of any labor dispute, or any
                    material adverse change in, or loss of, any material
                    relationship between the Company and any of its customers,
                    suppliers or key employees, or entered into any commitment
                    or transaction not in the ordinary and usual course of
                    business where such commitment or transaction is or would be
                    material in relation to the Company;

          (vi)      made any general wage or salary increases in respect of
                    personnel which it employs, other than increases in the
                    ordinary and normal course of business, nor hired any
                    employee who shall have an annual salary in excess of
                    $70,000; or

          (vii)     authorized or agreed or otherwise become committed to do any
                    of the foregoing.

     (l)  Title to Properties - Except as disclosed in Schedules "I" and "J"
          hereto, the Company has good and marketable title to all its
          respective properties, interests in properties and assets, real and
          personal, including without limitation those reflected in the
          Financial Statements or acquired since the date of the Financial
          Statements, free and clear of all mortgages, pledges, liens, claims,
          rights, encumbrances or charges of any kind or nature.

     (m)  Equipment and Condition of Assets - All non-vehicular equipment,
          assets, personal property and fixtures in the possession or custody of
          the Company which, as of the date hereof, are owned, leased or held
          under license or similar arrangement by the Company and are necessary
          for the conduct of the Business are in good condition, repair and
          proper working order, reasonable wear and tear excepted. Copies of all
          leases, licenses, agreements and other documentation relating thereto
          have been provided or made available to Purchaser.

     (n)  Leases of Real Property - The Company is not a party to or bound by
          any leases of real property other than those disclosed in Schedule "J"
          hereto, and all interests held by the Company as lessee under such
          leases are free and clear of any and all liens, charges and
          encumbrances of any nature and kind whatsoever. All rental and other
          payments required to be paid by the Company, as lessee, pursuant to
          such leases have been duly paid. Such leases are in full force and
          effect without amendment thereto and the Company is not otherwise in
          default in any material respect in meeting its obligations contained
          in any such lease. The representations or warranties set forth in
          Appendix "J" hereto with respect to any real property owned by NRM
          Properties, Inc. or Chaparral Properties, Inc. that is subject to a
          lease to which the Company is a party or by which it is bound are true
          and correct.

     (o)  Real Property - The Company does not own any interest in real
          property, except as disclosed on Schedule "J" hereto.


                                       10
<PAGE>   11
     (p)  Vehicular Equipment - Schedule "K" contains a list of all vehicular
          equipment owned or leased by the Company and copies of all motor
          vehicle certificates of title with respect to such vehicular equipment
          have been provided to the Purchaser. Such vehicular equipment is, in
          all material respects, in good condition, repair and proper working
          order, reasonable wear and tear excepted, and each vehicle complies in
          all material respects with all laws and regulations affecting its
          operation and each vehicle bears a current safety standards
          certificate.

     (q)  Revenue Contracts - Except as disclosed in Schedule "L", the Company
          is not a party to any contract pursuant to which it is to provide
          transportation or other services. Each of the contracts set out in
          Schedule "L" is in full force and effect and enforceable in accordance
          with its respective terms and conditions, and there is not existing
          any default, or event or condition which, with the giving of notice or
          the passage of time, or both, would constitute an event of default, by
          the Company or any other party thereto under any of such contracts,
          that could have a material adverse effect on any of such contracts.

     (r)  Contracts to Purchase - Except as set out in Schedule "M", the Company
          is not a party to any contract to purchase any goods and/or services
          with a value in excess of $20,000/year. Each of the contracts set out
          in Schedule "M" is in full force and effect and enforceable in
          accordance with its respective terms and conditions, and there is not
          existing any default, or event or condition which, with the giving of
          notice or the passage of time, or both, would constitute an event of
          default, by the Company or any other party thereto under any of such
          contracts, that could have a material adverse effect on any of such
          contracts.

     (s)  Employment Contracts - Except as set out in Schedule "N", the Company
          neither has any written employment contracts, union or collective
          labor, pension, deferred profit sharing, retirement, employee benefit,
          stock option or other similar agreements or plans nor has it had any
          such plan or agreement in the past, nor does it have any written
          contracts of employment with any employees or, to the best of Vendors'
          knowledge, any oral contracts of employment which are not terminable
          on the giving of reasonable notice in accordance with applicable law.
          The Company has not, in the last four (4) years, experienced any labor
          disputes which were of a material nature, work stoppages or strikes.
          There is not now any circumstances or conduct which could result in
          the filing of an unfair labor practice complaint against the Company;
          any such complaints previously raised and currently ongoing and the
          current status thereof are particularized in Schedule "N".

     (t)  Material Contracts - Except for the material contracts and commitments
          disclosed herein, including the Schedules attached hereto, the Company
          is not a party to or bound by any material contract or commitments
          whether oral or written. True, correct and complete copies of all such
          written contracts and commitments either have been delivered to the
          Purchaser or will be delivered prior to Closing. Each of such
          contracts and commitments is in full force and effect and enforceable
          in


                                       11
<PAGE>   12
          accordance with its respective terms and conditions, and there is not
          existing any default, or event or condition which, with the giving of
          notice or the passage of time, or both, would constitute an event of
          default, by either of the Company or any other party thereto under any
          of such contracts or commitments, that could have a material adverse
          effect on any of such contracts or commitments. The Company has the
          capacity, including the necessary personnel, equipment and supplies,
          to perform all its obligations thereunder in all material respects.

     (u)  Pension/Benefit/Health Plans - The only pension, benefit or health
          plans established by or for the Company for its employees are those
          disclosed in Schedule "N" hereto; such plans are duly registered where
          required by, and are in good standing under all, applicable
          legislation; all required employer contributions thereunder to the
          date hereof have been made and the respective pension funds are funded
          in accordance with the rules of the pension plans and no past service
          funding liabilities exist thereunder. Except as disclosed on Schedule
          "N" hereto, there is no employee benefit or health plan established or
          maintained for employees of the Company, or to which contributions
          have been made by the Company with respect to such employees, which is
          subject to Title IV of the Employee Retirement Income Security Act of
          1974, as amended ("ERISA"). The Company is in compliance in all
          material respects with all provisions of ERISA, and the Company is not
          subject to any liability or obligation arising under ERISA or any
          other applicable law or the provisions of any other employee benefit
          plan, including but not limited to liability owed to the Pension
          Benefit Guaranty Corporation on account of a termination or partial
          termination of any employee benefit plan, any liability resulting from
          a "prohibited transaction", any liability for failure to meet minimum
          funding requirements, any liability related to the termination of a
          multi-employer pension plan, and any liability caused by the
          non-qualification of any plan under section 401 of the Code. No
          pension plan, no employee benefit plan, no "disqualified person" (as
          such term is used in Section 4975(c)(1) of the Code) has engaged, and
          no Vendor has engaged, in any transaction in violation of Section 406
          of ERISA or any "prohibited transaction" (as defined in Section
          4975(c)(1) of the Code) other than any such transaction which is
          exempt under Section 408 of ERISA or Section 4975(d) of the Code. The
          401k plan of the Company meets in all material respects the
          requirements of section 401(a) of the Code. The Company does not have
          any obligation to provide material post-retirement benefits of any
          nature to its employees, former employees or their survivors,
          dependents or beneficiaries, except as may be required by the
          Consolidated Omnibus Budget Reconciliation Act of 1986 ("COBRA") or
          any other applicable state medical benefits continuation laws, nor
          will any such obligation to provide such post-retirement benefits be
          incurred solely as a result of the consummation of the within
          transactions. The Company has not caused there to occur a "mass
          lay-off", as defined in section 693.3 of the regulations issued under
          the Worker Adjustment and Retention Notification Act (20 CFR 639) at
          any time in the past.

     (v)  Absence of Conflicting Agreements - Neither the Company nor any Vendor
          is a party to, bound or affected by or subject to any indenture,
          mortgage, lease,


                                       12
<PAGE>   13
          agreement, instrument, charter or by-law provision, or, to the best of
          Vendors' knowledge, any statute, regulation, order, judgment, decree
          or law which would be in any material respect violated, contravened,
          breached by or under which a material default would occur, as a result
          of the execution and delivery of this Agreement or the consummation of
          any of the transactions provided for herein.

     (w)  Litigation - Except for the items disclosed in Schedule "O" hereto,
          all of which are fully insured against, there is no suit, action,
          litigation, arbitration proceeding or private or governmental
          proceeding, hearing before an administrative tribunal, including
          appeals and applications for review, in progress, pending or to the
          knowledge of Vendors threatened against the Company or materially and
          adversely affecting its properties, business, financial condition or
          business prospects. Except as shown in Schedule "O", there is not
          presently outstanding against the Company any adverse judgment,
          decree, injunction, rule or order of any court, governmental
          department, commission, agency, instrumentality or arbitrator.

     (x)  Employees - There are set forth in Schedule "P" hereto the names and
          titles of all personnel employed or engaged by the Company whose
          annual base salary exceeds $40,000, including rates of remuneration,
          positions held and date of commencement of employment. The employment
          records of the Company are true, complete and correct in all material
          respects. Except as disclosed in Schedule "P" hereto, the Company does
          not owe any past or present employee any sum other than for accrued
          wages or salaries for the current payroll period, reimbursable
          expenses, accrued vacation and holiday pay (none of which is for a
          period in excess of two (2) weeks' pay with respect to any single
          employee), sick leave rights and amounts payable under employee
          benefit plans, and all of such sums that accrue from the date hereof
          until the Closing shall be timely paid by the Company on or prior to
          the Closing Date. There is not pending or, to the best knowledge of
          Vendors, after due inquiry, threatened, any charge or complaint
          against or involving the Company or any of its officers or employees
          by the National Labor Relations Board, the Occupational Health &
          Safety Administration, the Department of Labor, or any similar
          federal, state or local board of agency, or any representative
          thereof.

     (y)  Insurance - The Company currently has in force the policies of
          insurance set out in Schedule "Q" hereto. Such policies are
          appropriate to its Business, property and assets, are in such amounts
          and against such risks as are customarily carried and insured against
          by owners of comparable businesses, properties and assets, and, to the
          knowledge of Vendors, are issued by responsible insurers. All such
          policies of insurance are in full force and effect and the Company is
          not in default, whether as to the payment of premium or otherwise,
          under the terms of any such policy. Such policies can be cancelled
          without penalty or premium, and such cancellation would trigger a full
          pro rata refund of prepaid premiums. The Company has no liability for
          retrospective insurance premiums or costs.


                                       13
<PAGE>   14
     (z)  Intellectual Property - Attached as Schedule "R" is a true and correct
          schedule identifying all material patents, patent rights or licenses,
          patent applications, trademarks, trademark registrations and
          applications, trademark rights, trade names, trade secrets, service
          marks and applications therefore, copyrights and copyright
          registrations and copyright applications used in whole or in part in
          or required for the proper carrying on of the Business of the Company
          (the "Intellectual Property"). None of the matters covered by the
          Intellectual Property, nor any of the products or services sold or
          provided by the Company, nor any of the processes used or the business
          practices followed by the Company, infringes or has infringed upon any
          trademark, trade name, fictitious name, service mark, trade secrets,
          patent or copyright owned by any person or entity (or any application
          with respect thereto), or constitutes unfair competition. The Company
          is not obligated to pay any royalty or other payment with respect to
          any of the Intellectual Property, except as disclosed in Schedule "R".
          Except as disclosed in Schedule "R" hereto, to the best of Vendors'
          knowledge, no person or entity is producing, providing, selling or
          using products, services, names, or marks that would constitute an
          infringement of any of the Intellectual Property.

     (aa) Corporate Records - The corporate records and minute books of the
          Company have been delivered to the Purchaser and contain complete and
          accurate copies of the Company's Articles of Incorporation, as
          amended, by-laws, minutes of all meetings, and resolutions of its
          directors and shareholders. All such meetings were duly called and
          held, all such by-laws and resolutions were duly passed and the share
          certificate books, registers of shareholders and members, registers of
          transfers and registers of directors of the Company are complete and
          accurate in all material respects. In all material respects, the books
          and records of the Company with respect to its assets, businesses,
          operations, properties and prospects have been maintained in
          accordance with generally accepted accounting principles and in the
          usual, regular and ordinary manner, and all entries with respect
          thereto have been made and all transactions have been properly
          accounted for. All applicable corporate and other laws and all
          applicable generally accepted accounting principles relating to the
          maintenance of such books and records have been complied with by the
          Company.

     (bb) Third Party Approvals - Except for approvals required by the Federal
          Trade Commission or other agencies for purposes of complying with the
          Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and
          the rules and regulations promulgated thereunder (the "Hart Act") and
          required by the Arizona Department of Health Services, and except as
          disclosed in Schedule "S", there are no approvals, consents or waivers
          required to be obtained or applications required to be filed from or
          with governmental authorities or from any other Person whatsoever,
          including pursuant to any leases or contracts containing prohibitions
          or pre-consent provisions pertinent to this Agreement in order to
          permit the transactions contemplated herein or to preserve the
          Business and/or assets of the Company.


                                       14
<PAGE>   15
     (cc) Compliance with Environmental Laws - Except as disclosed in Schedule
          "T" hereto, the Company and the Business are in all material respects
          in compliance with all, and do not violate in any material respect,
          and have not violated in any material respect any, applicable federal,
          state, municipal or local laws, regulations, orders, certificates of
          approval, licenses, permits, governmental decrees, ordinances or any
          and all other applicable legislation or regulatory requirements with
          respect to environmental, health or safety matters. There has been no
          storage, treatment, generation, discharge, transportation or disposal
          of industrial, toxic or hazardous substances or solid or hazardous
          waste by, or on behalf of, the Company, in violation of any federal,
          state or local law, statute, rule or regulation or any decree, order,
          arbitration award or agreement with or any license or permit from any
          federal, state or local governmental authority. There has been no
          spill, discharge, leak, emission, injection, escape, dumping, or
          release of any kind by, or on behalf of, the Company, into the
          environment (including, without limitation, into air, water or ground
          water) of any materials including, without limitation, industrial,
          toxic or hazardous substances or solid, medical or hazardous waste, as
          defined under any federal, state or local law, statute, rule or
          regulation other than those releases permissible under such law,
          statute, rule or regulation or allowable under applicable permits.

     (dd) Compliance - The Company is not in violation in any material respect
          of any laws, regulations, decrees or ordinances applicable to the
          Business, assets, properties, financial condition or business
          prospects of the Company.

     (ee) Subsidiaries and Affiliates - Except as disclosed in Schedule "U"
          hereto, the Company has no subsidiaries or any other equity investment
          in any entity engaged in any aspect of the medical or transportation
          industry. Except as disclosed in Schedule "U" hereto, no Vendor has
          any equity interest in any "Affiliates." For purposes of this
          Agreement, the term "Affiliates" shall mean all entities engaged in
          any aspect of the medical or transportation industry in which the
          applicable Vendor is either an officer or director, or in which the
          applicable Vendor, directly or indirectly, owns or controls ten
          percent (10%) or more of the equity securities of the entity.

     (ff) Accounts Receivable - The accounts receivable existing on the books of
          the Southwest Companies at the Closing Time (net of contractual
          allowance) (the "Closing Accounts Receivable") shall be at least
          $6,040,000 (the "Minimum Accounts Receivable") and an amount at least
          equal to the Minimum Accounts Receivable or the Closing Accounts
          Receivable, whichever amount is greater (the "Target Accounts
          Receivable"), is good and collectible within 365 calendar days
          thereafter. None of the Closing Accounts Receivable are subject to the
          return of the merchandise or other property the selling price of which
          is represented thereby, or to offsets or counterclaims, the extent of
          which is in excess of any reserves for collectibility thereof
          reflected in the books of the Southwest Companies at the Closing.


                                       15
<PAGE>   16
     (gg) Bank Accounts - Schedule "V" hereto sets forth the name and location
          of each bank in which the Company has an account, lock box or safe
          deposit box, the number of each such account or box, the names of all
          signatories thereto and the persons authorized to draw thereon or have
          access thereto. No power of attorney exists from the Company.

     (hh) Accuracy of Documents, Representations and Warranties - The copies of
          all documents furnished to Purchaser, or any of its representatives
          by or on behalf of any Vendor or the Company, or any one or more of
          them, or their representatives, are true, complete and correct in all
          material respects. No representation or warranty of any Vendor
          contained in this Agreement or the other agreements to be executed by
          any Vendor pursuant hereto, and no statement contained in the
          exhibits, the schedules or the other documents delivered by or on
          behalf of any Vendor, or his or its representatives pursuant to or in
          connection with this Agreement or the other agreements to be executed
          by any Vendor pursuant hereto or any of the transactions contemplated
          hereby or thereby, contains any untrue statement of a material fact,
          or omits to state any material fact required to be stated herein or
          therein in order to make the statements contained herein or therein
          not misleading.

3.2 REPRESENTATIONS AND WARRANTIES OF THE PURCHASER - To induce the Vendors to
enter into this Agreement and to perform Vendors' obligations hereunder, and
with full knowledge that Vendors will rely thereon, the Purchaser hereby
represents and warrants to the Vendors the truth, accuracy and completeness of
the following, except as disclosed in Schedule "W" hereto:

     (a)  Organization and Valid Existence - The Purchaser is a corporation duly
          incorporated and organized, validly existing and in good standing
          under the laws of the State of Delaware and has all necessary
          corporate power, authority and capacity to execute and deliver the
          Agreement and the other agreements referenced herein to which the
          Purchaser is a party, to consummate the transactions contemplated
          hereby and thereby, and to fully and timely perform its obligations
          hereunder and thereunder. The execution and delivery by Purchaser of
          this Agreement and the other agreements referenced herein to which
          Purchaser is a party, and the consummation of the transactions
          contemplated hereby and thereby, have been duly authorized and
          approved by Purchaser's board of directors, and no other corporate
          proceedings on the part of Purchaser are required to authorize the
          execution and delivery of this Agreement, the other agreements
          referenced herein to which Purchaser is a party, or the consummation
          of the transactions contemplated hereby or thereby.

     (b)  Enforceability - This Agreement and the other agreements referenced
          herein to which Purchaser is a party have been duly executed and
          delivered by Purchaser and constitute legal, valid and binding
          obligations of Purchaser, enforceable against Purchaser in accordance
          with their respective terms.

     (c)  Absence of Conflicting Agreements - The Purchaser is not a party to,
          bound or affected by or subject to any indenture, mortgage, lease,
          agreement, instrument,


                                       16
<PAGE>   17
          charter or by-law provision, statute, regulation, order, judgment,
          decree or law which would be violated, contravened or breached by, or
          under which any default would occur, as a result of the execution and
          delivery of this Agreement or the consummation of any of the
          transactions provided for herein.

     (d)  Litigation - There is no suit, action, litigation, arbitration
          proceeding or governmental proceeding, including appeals and
          applications for review, in progress, pending or, to the best of the
          knowledge, information and belief (after due inquiry) of the senior
          officers of the Purchaser, threatened against or involving the
          Purchaser or any judgment, decree, injunction, rule or order of any
          court, governmental department, commission, agency, instrumentality or
          arbitrator which, in any such case, would materially and adversely
          affect the ability of the Purchaser to enter into this Agreement or to
          consummate the transactions contemplated hereby.

     (e)  Third Party Approvals - Except for approvals required by the Federal
          Trade Commission or other agencies for purposes of complying with the
          Hart Act and those required by the Arizona Department of Health
          Services, and except as disclosed in Schedule "W", there are no
          approvals, consents or waivers required to be obtained or applications
          required to be filed from or with governmental authorities or from any
          other Person whatsoever, including pursuant to any leases or contracts
          containing prohibitions or pre-consent provisions pertinent to this
          Agreement, in order to permit the transactions contemplated herein.

     (f)  Accuracy of Documents, Representations and Warranties - The copies of
          all documents furnished to the Vendors and their representatives by
          or on behalf of Purchaser and its representatives are true, complete
          and correct in all material respects. No representation or warranty of
          Purchaser contained in this Agreement or the other agreements
          referenced herein to which Purchaser is a party, and no statement
          contained in the exhibits, the schedules or the other documents 
          delivered by or on behalf of Purchaser or its representatives 
          pursuant to or in connection with this Agreement or any of the
          transactions contemplated hereby contains any untrue statement of a
          material fact, or omits to state any material fact required to be
          stated herein or therein in order to make the statements contained
          herein or therein not misleading.

3.3 NO BROKER - Each of the Parties represents and warrants to the others that
all negotiations relating to this Agreement and the transactions contemplated
hereby have been carried on between them directly and without the intervention
of any other party in such manner as to give rise to any valid claims against
any of the Parties for a brokerage commission, finder's fee or other like
payment.

3.4 NON-WAIVER - No investigations made by or on behalf of a Party at any time
shall have the effect of waiving, diminishing the scope of or otherwise
affecting any representation or warranty made by the other Party herein or
pursuant hereto.


                                       17
<PAGE>   18
3.5 NATURE OF REPRESENTATIONS, WARRANTIES AND COVENANTS - All statements
contained in any certificate or other instrument delivered by or on behalf of a
Party pursuant to or in connection with the transactions contemplated by this
Agreement shall be deemed to be made by such Party hereunder.

                                    ARTICLE 4

                     CONDITIONS PRECEDENT TO THE PERFORMANCE
                       BY THE PURCHASER AND THE VENDORS OF
                     THEIR OBLIGATIONS UNDER THIS AGREEMENT

4.1 PURCHASER'S CONDITIONS - The obligation of the Purchaser to complete the
purchase of the Purchased Shares hereunder shall be subject to the satisfaction
of, or compliance with, in all material respects, at or before the Closing Time,
each of the following conditions precedent (each of which is hereby acknowledged
to be inserted for the exclusive benefit of the Purchaser and may be waived by
it in whole or in part):

     (a)  Truth and Accuracy of Representations of Vendors at the Closing Time -
          All of the representations and warranties of Vendors made in or
          pursuant to this Agreement shall be true and correct in all material
          respects as at the Closing Time and with the same effect as if made at
          and as of the Closing Time (except as such representations and
          warranties may be affected by the occurrence of events or transactions
          expressly contemplated and permitted hereby), and the Purchaser shall
          have received a certificate from each of the Vendors confirming the
          truth and correctness in all material respects of their
          representations and warranties contained herein;

     (b)  Performance of Obligations - The Vendors shall have performed or
          complied with all of their obligations, covenants and agreements
          hereunder;

     (c)  Receipt of Closing Documentation - All documentation relating to the
          due authorization and completion of the sale and purchase hereunder of
          the Purchased Shares and all actions and proceedings taken on or prior
          to the Closing in connection with the performance by the Vendors of
          their obligations under this Agreement shall be reasonably
          satisfactory to the Purchaser and the Purchaser shall have received
          copies of all such documentation or other evidence as it may
          reasonably request in order to establish the consummation of the
          transactions contemplated hereby and the taking of all corporate
          proceedings in connection therewith in compliance with these
          conditions, in form (as to certification and otherwise) and substance
          reasonably satisfactory to the Purchaser;

     (d)  Consents, Authorizations and Registrations - All consents, approvals,
          orders and authorizations of any Persons or governmental authorities
          (or registrations, declarations, filings or recordings with any such
          authorities) required in connection with the completion of any of the
          transactions contemplated by this Agreement (including, without
          limitation, any notifications, approvals or consents required by the
          Arizona Department of Health Services) shall have been obtained


                                       18
<PAGE>   19
          on or before the Closing Time; the Vendors shall have obtained and
          delivered by Closing to the Purchaser written consents, in form and
          substance satisfactory to the Purchaser, to the transaction
          contemplated herein which are required (if any) pursuant to the real
          property leases referred to in Schedule "J" (and any customer
          contracts where approval or consent is required), including, without
          limiting the generality of the foregoing, such acknowledgements and
          confirmations of good standing from the lessors in respect of the real
          property leases referred to in Schedule "J" hereto as may be
          reasonably requested by the Purchaser;

     (e)  Directors and Officers of Company - Subject to the terms of the
          Employment Agreement, there shall have been delivered to the Purchaser
          on or before the Closing Date the resignations of such persons as the
          Purchaser shall direct who are presently directors and/or officers of
          the Company.

     (f)  No Damage - No substantial damage by fire or other hazard to the
          assets of the Company shall have occurred from the date hereof to the
          Closing Date which is not fully and adequately insured against;

     (g)  Litigation - On the Closing Date, there shall be no litigation,
          governmental investigation or proceeding pending or threatened for the
          purpose of enjoining or preventing the consummation of any of the
          transactions contemplated by this Agreement or otherwise claiming that
          such consummation is improper;

     (h)  Hart-Scott-Rodino Filing - The applicable waiting period under the
          Hart Act shall have expired or terminated.

     (i)  Management - Rural/Metro's Board of Directors shall have confirmed the
          appointment of Ramsey to the Board of Directors of Rural/Metro and to
          a senior executive position with Rural/Metro.

     (j)  Environmental Reports - Purchaser shall have received reports, in form
          and content satisfactory to Purchaser, in the exercise of its sole
          discretion, from independent environmental consultants acceptable to
          Purchaser in its sole discretion, and from legal counsel to Purchaser,
          concerning the real properties owned or leased by the Company, which
          reports shall be based, in part, on the results of environmental site
          assessments which Purchaser may cause to be completed for and on
          behalf of Purchaser prior to the Closing Date on all such real or
          leased properties, which reports, if any, shall be prepared at
          Purchaser's expense.

     (k)  Due Diligence - Purchaser shall, in the exercise of its sole
          discretion, be entirely satisfied with the business, operations,
          financial condition, assets and liabilities of the Company.

     (l)  Schedules - Purchaser shall have received from Vendors the Schedules
          referred to herein and all amendments and modifications thereto, and
          Purchaser shall, in the exercise of its sole discretion, be entirely
          satisfied with the nature and extent


                                       19
<PAGE>   20
          of the disclosures made therein and the representations and warranties
          of Vendors as modified by the disclosures contained in the Schedules.

     (m)  Simultaneous Closings - On the Closing Date, the share purchases and
          other transactions contemplated in each of the Agreements of Purchase
          and Sale executed of even date herewith for the sale of Southwest
          Ambulance of Casa Grande, Inc., Medical Emergency Devices and Services
          (MEDS), Inc., and SW General, Inc. shall be consummated simultaneously
          with the transactions contemplated herein.

4.2 VENDORS' CONDITIONS - The obligations of the Vendors to complete the sale of
the Purchased Shares hereunder shall be subject to the satisfaction of or
compliance with, at or before the Closing Time, each of the following conditions
precedent (each of which is hereby acknowledged to be inserted for the exclusive
benefit of the Vendors and may be waived by them in whole or in part):

     (a)  Truth and Accuracy of Representations of Purchaser at Closing Time -
          All of the representations and warranties of the Purchaser made in or
          pursuant to this Agreement shall be true and correct in all material
          respects as at the Closing Time and with the same effect as if made at
          and as of the Closing Time and the Vendors shall have received a
          certificate from a duly authorized senior officer of the Purchaser
          confirming the truth and correctness in all material respects of the
          representations and warranties of the Purchaser contained herein;

     (b)  Performance of Obligations - The Purchaser shall have performed or
          complied with all of its obligations, covenants and agreements
          hereunder;

     (c)  Receipt of Closing Documentation - All documentation relating to the
          due authorization and completion of the sale and purchase hereunder of
          the Purchased Shares and all actions and proceedings taken on or prior
          to the Closing in connection with the performance by the Purchaser of
          its obligations under this Agreement shall be reasonably satisfactory
          to the Vendors and the Vendors shall have received copies of all such
          documentation or other evidence as they may reasonably request in
          order to establish the consummation of the transactions contemplated
          hereby and the taking of all corporate proceedings in connection
          therewith in compliance with these conditions, in form (as to
          certification and otherwise) and substance satisfactory to the
          Vendors;

     (d)  Release of Vendors' Guaranties - Purchaser shall have secured the
          release of Vendors from liability for any personal guarantees issued
          by Vendors as the shareholders of the Company with respect to any
          liability of the Company for borrowed money, and shall have provided
          to Vendors written evidence thereof, or, in the alternative, Purchaser
          shall deliver an agreement of assumption and indemnification, in form
          and content mutually satisfactory to Purchaser and Vendors, pursuant
          to which Purchaser will indemnify Vendors for any such personal
          guaranty;


                                       20
<PAGE>   21
     (e)  Litigation - On the Closing Date, there shall be no litigation,
          governmental investigation or proceeding pending or threatened for the
          purpose of enjoining or preventing the consummation of any of the
          transactions contemplated by this Agreement or otherwise claiming that
          such consummation is improper;

     (f)  Hart-Scott-Rodino Filing - The applicable waiting period under the
          Hart Act shall have expired or terminated;

     (g)  Management - The Board of Directors of Rural/Metro shall have
          confirmed the appointment of Ramsey to the Board of Directors of
          Rural/Metro and to a senior executive position with Rural/Metro and
          approved certain existing management contracts of the Company;

     (h)  Simultaneous Closings - On the Closing Date, the share purchases and
          other transactions contemplated in each of the Agreements of Purchase
          and Sale executed of even date herewith for the sale of Southwest
          Ambulance of Casa Grande, Inc., Medical Emergency Devices and Services
          ("MEDS"), Inc., and SW General, Inc. shall be consummated
          simultaneously with the transactions contemplated herein.

                                    ARTICLE 5

                         OTHER COVENANTS OF THE PARTIES

5.1 CONDUCT OF BUSINESS PRIOR TO CLOSING - During the period from the date of
this Agreement to the Closing Time, the Vendors will have the following
obligations and will cause the Company to do the following:

     (a)  Access to Records - Vendors shall, and shall cause the Company and its
          employees, officers, agents, representatives and accountants to, fully
          cooperate with Purchaser to allow the officers, employees, attorneys,
          consultants and accountants of Purchaser free and unrestricted access
          (but only through Barry Landon, as representative of the Vendors and
          without interference to the ordinary conduct of the Business) during
          normal business hours to all of the properties, books, contracts,
          documents and records of the Company and furnish to Purchaser such
          information as Purchaser may at any time and from time to time
          reasonably request until the Closing Time.

     (b)  Business in Ordinary Course - Vendors shall cause the Company to carry
          on its business and affairs as heretofore carried on, and neither the
          Company nor any Vendor will order, purchase or lease any products,
          inventory, equipment, leased personalty, or other items, or dispose of
          any of its assets or leased property, or issue any quotations, or
          prepay any of its material obligations, incur any liabilities or
          obligations, hire or discharge any employee or officer or, without
          limitation by specific enumeration of the foregoing, enter into any
          other transaction, except in the usual and ordinary course of its
          business in accordance with the past practices of the Company and
          except as provided herein. Without limiting the


                                       21
<PAGE>   22
          generality of the foregoing, Vendors shall not permit the Company,
          without the prior written consent of Purchaser, to:

          (i)       create or suffer to exist any liens or encumbrances with
                    respect to any of the assets or properties of the Company
                    which shall not be discharged at or prior to the Closing
                    Date, other than liens for nondelinquent taxes;

          (ii)      incur any indebtedness for borrowed money other than in the
                    usual and ordinary course of its business;

          (iii)     sell or transfer any material assets or properties
                    (including, without limitation, sales and transfers to
                    Affiliates, other than Affiliates of the Company the stock
                    of which is to be acquired by Purchaser or an Affiliate of
                    Purchaser on the Closing Date);

          (iv)      acquire or enter into any agreement or understanding (oral
                    or written) to acquire the stock or assets of any other
                    person, firm, corporation or other entity;

          (v)       make any material change in the conduct or nature of any
                    aspect of its business, whether in the ordinary course of
                    business or not, or whether or not the change has or will
                    have a material adverse affect on the business activities,
                    financial condition, or business prospects of the Company;

          (vi)      waive any material rights;

          (vii)     pay any Affiliate, other than Affiliates of the Company the
                    stock of which is to be acquired by Purchaser or an
                    Affiliate of Purchaser on the Closing Date, or be charged by
                    any Affiliate, other than Affiliates of the Company the
                    stock of which is to be acquired by Purchaser or an
                    Affiliate of Purchaser on the Closing Date, for goods sold
                    or services rendered or be charged by any Affiliate, other
                    than Affiliates of the Company the stock of which is to be
                    acquired by Purchaser or an Affiliate of Purchaser on the
                    Closing Date, for corporate overhead expenses, management
                    fees, legal or accounting fees, capital charges, or similar
                    charges or expenses, except for any payments made by the
                    Company pursuant to leases with NRM Properties, Inc. or
                    Chaparral Properties, Inc.;

          (viii)    incur or commit to incur any individual capital expenditures
                    except in the ordinary course of its business;

          (ix)      amend employment contracts or the terms and conditions of
                    employment of any officer, director or employee earning
                    total annual compensation in excess of $70,000, other than
                    normal merit and cost of living


                                       22
<PAGE>   23
                    increases to employees in accordance with the general
                    prevailing practices of the Company existing prior to the
                    date of this Agreement;

          (x)       pay or incur any management or consulting fees;

          (xi)      hire any employee who shall have an annual salary in excess
                    of $70,000;

          (xii)     enter into any transaction other than in the usual and
                    ordinary course of business; or

          (xiii)    issue or sell any shares of the stock or other securities of
                    the Company, including any of the Purchased Shares, or make
                    or become obligated to make any dividend or other
                    distribution or payment to Vendors or any former shareholder
                    of the Company in respect of any stock or other security of
                    the Company at any time held by Vendor or such other former
                    shareholders.

     (c)  Employees - Vendors shall use their reasonable efforts to retain, and
          shall cause the Company to each retain its business intact, preserve
          all its goodwill and customer and employee relations, including
          keeping available the services of each of its present employees,
          representatives and agents.

     (d)  Continue Insurance - Vendors shall cause the Company to continue in
          force all existing policies of insurance presently maintained by the
          Company.

     (e)  Perform Obligations - Vendors shall cause the Company to comply in all
          material respects with all laws affecting the operation of the
          Business and to pay all required taxes and tax installments.

     (f)  Confidentiality - Until the Closing, and at all times thereafter as
          provided in Section 6.1(d) hereof, Vendors will maintain as
          confidential their discussions with Purchaser, and the terms and
          conditions of this Agreement, and the other agreements to be executed
          in connection herewith, and except as reasonably necessary to fulfill
          Vendors' obligations hereunder or as required by law, will not make
          any trade press or other announcement or disclosure in relation to
          such discussions whether before or after Closing without the prior
          written consent of Purchaser.

     (g)  Exclusivity - Until the earlier of the Closing or the termination of
          this Agreement in accordance with the terms hereof, Vendors will
          negotiate the sale of the stock, assets and properties of the Company
          only with Purchaser, and no Vendor will permit the Company to,
          directly or indirectly, enter into any discussion with, or disclose
          any information in relation to the Purchased Shares or the assets of
          the Company to any other person, firm, or other entity, other than
          Purchaser.

     (h)  Equitable Relief - Each Vendor acknowledges and agrees that the
          covenants contained in each of paragraphs (f) and (g) of this Section
          5.1 are a material inducement for Purchaser to execute and deliver
          this Agreement and to con-


                                       23
<PAGE>   24
          summate the transactions contemplated hereby. Accordingly, Vendor
          acknowledges and agrees that the restrictions contained in each of
          paragraphs (f) and (g) of this Section 5.1 are reasonable and
          necessary for the protection of the business of Purchaser and its
          subsidiaries, the Company, and the investment of Purchaser in the
          Company, and that a breach of any such restriction could not
          adequately be compensated by damages in an action at law. In the event
          of a breach or threatened breach by any Vendor of any of the
          provisions of any of paragraphs (f) or (g) of this Section 5.1,
          Purchaser shall be entitled to obtain, without the necessity of
          posting bond therefor, an injunction (preliminary or permanent, or a
          temporary restraining order) restraining such Vendor from the activity
          or threatened activity constituting, or which would constitute, a
          breach, as well as damages and an equitable accounting of all
          earnings, profits and other benefits arising from a violation, which
          right shall be cumulative and in addition to any other rights or
          remedies to which Purchaser may be entitled.

     (i)  Severability - Each and every provision set forth in each of
          paragraphs (f) and (g) of this Section 5.1 is independent and
          severable from the others, and no provision shall be rendered
          unenforceable by virtue of the fact that, for any reason, any other or
          others of them may be unenforceable in whole or in part. The parties
          hereto agree that if any provision of paragraphs (f) or (g) of this
          Section 5.1 shall be declared by a court of competent jurisdiction to
          be unenforceable for any reason whatsoever, the court may
          appropriately limit or modify such provision, and such provision shall
          be given effect to the maximum extent permitted by applicable law.

     (j)  Consents - Vendors shall use their reasonable efforts and make every
          good faith attempt to obtain any and all consents and estoppel letters
          reasonably requested by Purchaser to or in connection with the
          assignment of, or alternate arrangements satisfactory to Purchaser
          with respect to, any contract, lease, license, permit, agreement, or
          other instrument, which is to be an asset of the Company, or which may
          be necessary, appropriate, or required in order to permit the conduct
          of the Business and operations of the Company after the Closing to be
          in all respects the same as the conduct of the Business and operations
          of the Company, prior to the Closing.

5.2 OBLIGATIONS OF PURCHASER - During the period from the date of this Agreement
to the Closing Time, or such other period as provided by this Agreement, the
Purchaser will have the following obligations:

     (a)  Confidentiality - Purchaser will maintain as confidential its
          discussions with Vendors, and the terms and conditions of this
          Agreement, and the other agreements to be executed in connection
          herewith, and except as reasonably necessary to fulfill its
          obligations hereunder or as required by law, will not make any trade
          press or other announcement or disclosure in relation to such
          discussions without the prior written consent of Vendors. In the event
          of the termination of this Agreement without consummation of the
          transactions contemplated hereby, Purchaser will keep confidential any
          information (unless readily available from


                                       24
<PAGE>   25
          public or published information sources) obtained from the Company or
          the Vendors. If this Agreement is so terminated, promptly after such
          termination, all documents, work papers and other written material
          obtained from Vendors' representative in connection with this
          Agreement and not theretofore made public (including all copies
          thereof), shall be returned to the Person that provided such material.
          Purchaser shall provide Vendors with a list of representatives of
          Purchaser involved in the due diligence, and said representatives
          shall refrain from discussing the transaction and its due diligence
          activities with any other employee or representative of Purchaser not
          disclosed on the list.

     (b)  Nonsolicitation - In the event of termination of this Agreement
          without consummation of the transactions contemplated hereby,
          Purchaser agrees that for a period of three (3) years following such
          termination, Purchaser will not, directly or indirectly, solicit or
          cause others to solicit any person who, on the date hereof, is an
          employee of the Company and whose annual compensation from the Company
          exceeds $25,000, for employment or as an independent contractor with
          any person or entity, unless first authorized in writing by Vendors,
          which authorization may be withheld in the sole and absolute
          discretion of Vendors.

     (c)  Trade Secrets and Other Information - In the event of termination of
          this Agreement without consummation of the transactions contemplated
          hereby, Purchaser agrees that after the Closing Purchaser will not
          communicate or divulge to, or use for the benefit of, any person, firm
          or corporation any of the trade secrets, methods, formulas, business
          and/or marketing plans, processes or any other proprietary or
          confidential information with respect to the Company and its business,
          financial condition, business operations or methods, or business
          prospects. The preceding sentence shall not apply to information which
          (i) is, was or becomes generally known or available to the public or
          the industry other than as a result of a disclosure by Purchaser in
          violation of this Agreement, or (ii) is required to be disclosed by
          law. Purchaser will advise Vendors, in writing, of any request,
          including a subpoena or similar legal inquiry, to disclose any such
          confidential information, such that Vendors can seek appropriate legal
          relief.

     (d)  Equitable Relief - Purchasers acknowledge that the covenants contained
          in each of paragraphs (a), (b), and (c) of this Section 5.2 are a
          material inducement for Vendors to execute and deliver this Agreement
          and to consummate the transactions contemplated hereby. Accordingly,
          Purchaser acknowledges and agrees that the restrictions contained in
          each of paragraphs (a), (b), and (c) of this Section 5.2 are
          reasonable and necessary for the protection of the business of the
          Company, and Vendors' investment in the Company, and that a breach of
          any such restriction could not adequately be compensated by damages in
          an action at law. In the event of a breach or threatened breach by
          Purchaser of any of the provisions of any of paragraphs (a), (b), or
          (c) of this Section 5.2, Vendors shall be entitled to obtain, without
          the necessity of posting bond therefor, an injunction (preliminary or
          permanent, or a temporary restraining order) restraining Purchaser
          from the activity or threatened activity constituting, or which would
          constitute, a breach of this Agreement, as well as damages and an
          equitable


                                       25
<PAGE>   26
          accounting of all earnings, profits and other benefits arising from
          such a violation, which right shall be cumulative and in addition to
          any other rights or remedies to which Vendors may be entitled.

     (e)  Severability - Each and every provision set forth in each of
          paragraphs (a), (b), and (c) this Section 5.2 is independent and
          severable from the others, and no provision shall be rendered
          unenforceable by virtue of the fact that, for any reason, any other or
          others of them may be unenforceable in whole or in part. The parties
          hereto agree that if any provision of any of paragraphs (a), (b), or
          (c) of this Section 5.2 shall be declared by a court of competent
          jurisdiction to be unenforceable for any reason whatsoever, the court
          may appropriately limit or modify such provision, and such provision
          shall be given effect to the maximum extent permitted by applicable
          law.

     (f)  Consents - Purchaser shall use its reasonable efforts and make every
          good faith attempt to obtain any and all consents and estoppel letters
          which may be necessary, appropriate, or required in order to permit
          consummation of the transactions contemplated herein.

5.3 JOINT OBLIGATIONS OF VENDORS AND PURCHASER - During the period from the date
of this Agreement to the Closing Time, the following shall apply with equal
force to Vendors and Purchaser:

     (a)  Notice - Each Party shall promptly give the other parties written
          notice of the existence or occurrence of any condition that would make
          any representation or warranty of the notifying Party untrue or that
          might reasonably be expected to prevent the consummation of the
          transactions herein contemplated.

     (b)  Performance - No Party shall intentionally perform or omit to perform
          any act which, if performed or omitted, would prevent or excuse the
          performance of this Agreement by any Party hereto or that would result
          in any representation or warranty contained herein of that Party being
          untrue in any material respect as of the date hereof and as if
          originally made on and as of the Closing Date.

     (c)  Hart-Scott-Rodino Filings - Each party shall take whatever steps are
          necessary to make any filings required under the Hart Act not later
          than ten days after the date of execution of this Agreement.

                                    ARTICLE 6

                            POST CLOSING OBLIGATIONS

6.1 OBLIGATIONS OF VENDORS - Following the Closing, Vendors shall each be
subject to the following obligations:

     (a)  Covenant Not to Compete - In consideration of the execution and
          delivery of this Agreement by Purchaser, and in consideration of the
          Purchase Price, and as


                                       26
<PAGE>   27
          additional consideration therefor, each of the Vendors unconditionally
          agrees that during the Restricted Period (as defined below) no Vendor
          will, directly or indirectly (including, without limitation, as a
          partner, shareholder, director, officer or employee of, or lender or
          consultant to, any other person or entity), for himself, herself or
          itself, or on behalf of, or in conjunction with, any other Person or
          governmental entity, in any manner whatsoever, or in any other
          capacity within, into or from the Restricted Territory (as defined
          below) engage or cause others to engage in the Business, or any aspect
          thereof, unless first authorized in writing by Purchaser, which
          authorization may be withheld in the sole and absolute discretion of
          Purchaser. For purposes of this Agreement, the term "Restricted
          Period" shall mean the period ending three (3) years from the Closing
          Date. For purposes of this Agreement, the term "Restricted Territory"
          shall mean the State of Arizona. If any Vendor violates his, her or
          its obligations under this Section 6.1(a), then the Restricted Period
          shall be extended by the period of time equal to that period beginning
          when the activities constituting such violation commenced and ending
          when the activities constituting such violation terminated.
          Notwithstanding the foregoing, the obligations of the Vendors under
          this Section 6.1(a) shall terminate if Ramsey is terminated by
          Purchaser without Cause as defined and described in the Employment
          Agreement. The Purchaser agrees that no breach of this covenant not to
          compete will occur as a result of Ramsey's formation of and activities
          with respect to any 501(c)(3) foundation, his continued association
          with the International Association of Firefighters, his continued
          ownership and operation of an ambulance service company in Pima County
          under the name Kords Southwest, or his continued service as President
          of the Arizona Ambulance Association.

     (b)  Nonsolicitation - In consideration of the execution and delivery of
          this Agreement by Purchaser, and in consideration of the Purchase
          Price, each of the Vendors agrees that for a period of three (3) years
          following the Closing Date no Vendor will directly or indirectly
          solicit or cause others to solicit, (i) in respect of the Business,
          any Person or other entity that is, or was within the twelve (12)
          month period immediately prior to the Closing, a customer or supplier
          of the Company, or (ii) any person who, on the date hereof, is an
          employee of the Company and whose annual compensation from the Company
          exceeds $25,000, for employment or as an independent contractor with
          any Person or entity, unless first authorized in writing by Purchaser,
          which authorization may be withheld in the sole and absolute
          discretion of Purchaser. If any Vendor violates his, her or its
          obligations under this Section 6.1(b), then the time periods hereunder
          shall be extended by the period of time equal to that period beginning
          when the activities constituting such violation commenced and ending
          when the activities constituting such violation terminated.
          Notwithstanding the foregoing, the obligations of the Vendors under
          this Section 6.1(b) shall terminate if Ramsey is terminated by
          Purchaser without Cause as defined and described in the Employment
          Agreement.

     (c)  Trade Secrets and Other Information - In consideration of the
          execution and delivery of this Agreement by Purchaser, and in
          consideration of the Purchase Price, each of the Vendors agrees that
          after the Closing no Vendor will


                                       27
<PAGE>   28
          communicate or divulge to, or use for the benefit of, any Person other
          than Purchaser or the Company, or its or their agents and
          representatives, any of the trade secrets, methods, formulas, business
          and/or marketing plans, processes or any other proprietary or
          confidential information with respect to the Company and its business,
          financial condition, business operations or methods, or business
          prospects. The preceding sentence shall not apply to information which
          (i) is, was or becomes generally known or available to the public or
          the industry other than as a result of a disclosure by a Vendor in
          violation of this Agreement, or (ii) is required to be disclosed by
          law. Vendors will advise Purchaser, in writing, of any request,
          including a subpoena or similar legal inquiry, to disclose any such
          confidential information, such that Purchaser can seek appropriate
          legal relief.

     (d)  Confidentiality - At all times after the Closing, Vendors will
          maintain as confidential the discussions between Vendors and
          Purchaser, and the terms and conditions of this Agreement, and the
          other agreements to be executed in connection herewith, and except as
          required by law, will not make any trade press or other announcement
          or disclosure in relation to such discussions whether before or after
          Closing without the prior written consent of Purchaser.

     (e)  Equitable Relief - Vendors acknowledge that the covenants contained in
          each of paragraphs (a), (b), (c), and (d) of this Section 6.1 are a
          material inducement for Purchaser to execute and deliver this
          Agreement and to consummate the transactions contemplated hereby.
          Accordingly, Vendors acknowledge and agree that the restrictions
          contained in each of paragraphs (a), (b), (c), and (d) of this Section
          6.1 (including, without limitation, the Restricted Period and the
          Restricted Territory) are reasonable and necessary for the protection
          of the business of the Company, and Purchaser's investment in the
          Company, and that a breach of any such restriction could not
          adequately be compensated by damages in an action at law. In the event
          of a breach or threatened breach by any Vendors of any of the
          provisions of any of paragraphs (a), (b), (c), or (d) of this Section
          6.1, Purchaser shall be entitled to obtain, without the necessity of
          posting bond therefor, an injunction (preliminary or permanent, or a
          temporary restraining order) restraining that Vendor from the activity
          or threatened activity constituting, or which would constitute, a
          breach of this Agreement, as well as damages and an equitable
          accounting of all earnings, profits and other benefits arising from
          such a violation, which right shall be cumulative and in addition to
          any other rights or remedies to which Purchaser may be entitled.

     (f)  Severability - Each and every provision set forth in each of
          paragraphs (a), (b), (c), and (d) this Section 6.1 is independent and
          severable from the others, and no provision shall be rendered
          unenforceable by virtue of the fact that, for any reason, any other or
          others of them may be unenforceable in whole or in part. The parties
          hereto agree that if any provision of any of paragraphs (a), (b), (c)
          or (d) of this Section 6.1 shall be declared by a court of competent
          jurisdiction to be unenforceable for any reason whatsoever, the court
          may appropriately limit or modify such provision, and such provision
          shall be given effect to the maximum extent permitted by applicable
          law.


                                       28
<PAGE>   29
     (g)  Consents - Vendors shall use their reasonable efforts and make every
          good faith attempt to obtain any and all consent and estoppel letters,
          if any, reasonably requested by Purchaser to or in connection with the
          assignment of, or alternate arrangements satisfactory to Purchaser
          with respect to, any contract, lease, license, permit, agreement, or
          other instrument, which is to be an asset of the Company, or which may
          be necessary, appropriate, or required in order to permit the conduct
          of the business and operations of the Company after the Closing to be
          in all respects the same as the conduct of the business and operations
          of the Company prior to the Closing.

6.2 OBLIGATIONS OF PURCHASER - Following the Closing, Purchaser shall be subject
to the following obligations:

     (a)  Tax Amendments - The Purchaser agrees that the Company shall not, and
          the Purchaser shall not cause the Company to, amend the Company's tax
          returns for 1995 or earlier without the prior consent of Ramsey. In
          the event the Company and/or the Purchaser amends such tax returns
          without Ramsey's consent, the Purchaser agrees to indemnify the
          Vendors for any liabilities that any of them may occur as a result of
          any such amendment; provided, however, that Vendors agree jointly and
          severally to indemnify, defend and hold harmless the Purchaser and the
          Company for any liabilities, costs, penalties, fines and interest that
          either of them may incur as the result of any refusal to grant the
          consent referred to above.

     (b)  Non Interference With Leases - Purchaser acknowledges the existence of
          certain real property leases between the Company and NRM Properties,
          Inc. and Chaparral Properties, Inc. (collectively the "Landlords"),
          and agrees not to interfere with such leases and to cause the Company
          to abide by such leases. In the event that the Company and/or the
          Purchaser reaches this Agreement, the Purchaser shall pay to the
          appropriate Landlord the full amount of all unpaid monetary
          obligations of the Company through the lease period in effect at the
          time of the Closing and agrees that such remedy is in addition to all
          other remedies that the Landlords or the Vendors may have at law or in
          equity.

6.3 OBLIGATIONS OF VENDORS AND PURCHASER - Following the Closing, Vendors and
Purchaser shall execute such further documents, and perform such further acts,
as may be necessary to transfer and convey the Purchased Shares to Purchaser, on
the terms herein contained, and to otherwise comply with the terms of this
Agreement and consummate the transactions herein provided.

6.4 SECTION 338(h)(10) ELECTION

     (a)  Making the Section 338(h)(10) Election; Form 8023-A - Vendors shall
          timely join with the Purchaser in making an election pursuant to
          Section 338(h)(10) of the Code (and any corresponding election under
          state law) (the "Section 338(h)(10) Election"). After Closing,
          Purchaser will promptly prepare IRS Form 8023-A ("Form 8023-A") and
          any related schedules required to be included with such


                                       29
<PAGE>   30
          form and Vendors shall provide the Purchaser with all necessary
          information to timely prepare such schedules (the "Election
          Schedules"). Purchaser shall submit the Form 8023-A and the Election
          Schedules to the Vendors for their review. The Vendors shall
          immediately execute the Form 8023-A and submit seven original signed
          duplicates thereof to Purchaser who shall be entitled to file the Form
          8023-A and the Election Schedules with the IRS. Vendors shall also
          timely comply with their responsibilities as required by the Code to
          effect the 338(h)(10) Election.

     (b)  Section 338(h)(10) Election Purchase Price Adjustment. The Purchaser
          hereby covenants and agrees to defend, indemnify and hold harmless the
          Vendors for, from and against any tax liability, including related
          penalties, interest and any additional fees and costs (including,
          without limitation, attorneys' and accountants' fees and costs) that
          accrue to the Vendors as a direct result of the Section 338(h)(10)
          Election (the "Tax Liability"). The Tax Liability resulting from the
          Section 338(h)(10) Election shall be paid in cash to the Vendors
          immediately prior to the time such Tax Liability, if any, is required
          to be paid to the applicable taxing authority.

                                    ARTICLE 7

                                 INDEMNIFICATION

7.1 INDEMNIFICATION BY VENDORS

     (a)  General - Subject to Section 7.4 hereof, Vendors jointly and severally
          covenant and agree to defend, indemnify and hold Purchaser and the
          Company, its and their officers, directors, shareholders and
          subsidiaries, harmless for, from and against any and all damages,
          losses, liabilities (absolute and contingent), fines, penalties, costs
          and expenses (including, without limitation, reasonable counsel fees
          and costs and expenses incurred in the investigation, defense or
          settlement of any claim covered by this indemnity) with respect to or
          arising out of any demand, claim, inquiry, investigation, proceeding,
          action or cause of action that Purchaser and/or the Company, its and
          their officers, directors, shareholders and subsidiaries, may suffer
          or incur by reason of: (a) the inaccuracy of any of the
          representations or warranties of Vendors contained in this Agreement,
          or any of the agreements, certificates, documents, exhibits or
          schedules delivered in connection with this Agreement; (b) the failure
          to comply with, or the breach or default by any Vendor of any of the
          covenants, warranties or agreements made by that Vendor contained in
          this Agreement, or any of the agreements, certificates, documents,
          exhibits or schedules delivered in connection with this Agreement; (c)
          any pending or threatened litigation, claims, investigations,
          inquiries, regulatory audits or assessments, or other similar
          proceedings against Purchaser and/or the Company and/or its or their
          directors, officers, shareholders, employees, agents or
          representatives, as well as any future litigation, claims,
          investigations, inquiries, regulatory audits or assessments, or other
          similar proceedings against the Purchaser and/or the Company and/or
          its or their


                                       30
<PAGE>   31
          directors, officers, shareholders, employees, agents or
          representatives that arise from a state of facts existing prior to the
          Closing, and which are not fully covered and reimbursed by insurance;
          or (d) any liability or obligation of the Company not reflected,
          provided for, or adequately reserved against on the balance sheets
          included in the Financial Statements. Purchaser and/or the Company
          shall be entitled to offset against any amount owed by Purchaser
          and/or the Company to Vendors, (or any of them) any amount owed to
          Purchaser and/or the Company by Vendor, (or any of them) or any of
          their Affiliates.

     (b)  Environmental - Subject to Section 7.4 hereof, Vendors jointly and
          severally covenant and agree to defend, indemnify and hold Purchaser
          and/or the Company, and their officers, directors and shareholders
          harmless for, from and against any and all damages, losses,
          liabilities (absolute and contingent), fines, penalties, costs and
          expenses (including, without limitation, reasonable counsel fees and
          costs and expenses incurred in the investigation, defense or
          settlement of any claim covered by this indemnity and costs associated
          with any environmental assessments and/or remediation expenses) by
          reason of any inaccuracy of any of the representations or warranties
          set forth in Section 3.1(cc) hereof, or with respect to or arising out
          of any demand, claim, inquiry, investigation, proceeding, action, or
          cause of action brought by any governmental agency or instrumentality
          or any Person other than Purchaser, which Purchaser and/or the
          Company, or any of their officers, directors or shareholders may
          suffer or incur by reason of:

          (i)       any generation, transportation, storage, treatment or
                    disposal of industrial, toxic or hazardous substances or
                    solid or hazardous wastes occurring on or prior to the
                    Closing Date including, without limitation, any waste or
                    other disposal activities or discharges that occurred at a
                    facility on which any portion of the Company's (or its
                    predecessors') business was conducted, any waste or other
                    disposal activities or discharges that occurred off of any
                    such facility with regard to wastes and other substances
                    generated on such facility, and any waste or other disposal
                    activities or discharges that occurred on real estate at any
                    time whether or not the Company (or its predecessors) owned
                    or leased such real estate at the time such waste or other
                    disposal activities or discharges were engaged in, where
                    the Company or Persons at the direction of the Company
                    performed such waste or other disposal activities or
                    discharges;

          (ii)      any spills, discharges, leaks, emissions, injections,
                    escapes, dumping, or any releases as defined now or in the
                    future under the Comprehensive Environmental Response,
                    Compensation, and Liability Act of 1980, P.L. 96-510, as
                    amended or reauthorized from time to time, or any other
                    similar federal, state or local laws, statutes, rules or
                    regulations, occurring on or prior to the Closing Date,
                    including, but not limited to, both those releases or
                    incidents involving environmental contamination that
                    required notification or reporting to appropriate federal,
                    state or local officials or agencies, or clean-up or
                    remedial activities and those


                                       31
<PAGE>   32
                    releases or incidents which occurred prior to the effective
                    date of any requirements imposing such notification or
                    reporting obligations or clean-up or remedial activities,
                    but which would have been subject to such obligations if
                    they had occurred subsequent to the effective date of such
                    requirements;

          (iii)     any discharges to surface waters or groundwaters occurring
                    on or prior to the Closing Date;

          (iv)      any air emissions occurring on or prior to the Closing Date;

          (v)       the exposure of and resulting consequences to any persons,
                    including, but not limited to, employees of the Company (or
                    any of its predecessors), to any mineral, chemical or
                    industrial product, raw material intermediate, by-product or
                    waste, or substance created, generated, processed, handled
                    or originating at a facility at which the Company (or any of
                    its predecessors) conducted business on or prior to the
                    Closing Date or otherwise used by the Company (or any of its
                    predecessors) in the conduct of its business;

          (vi)      any violations by the Company (or any of its predecessors)
                    occurring on or prior to the Closing Date of federal, state
                    or local (A) environmental laws, or (B) occupational or
                    employee health and safety laws;

          (vii)     any and all actions, failures to act and negligence in
                    monitoring, maintaining and upkeep of on-site storage,
                    treatment and disposal facilities on or prior to the Closing
                    Date;

          (viii)    any misuse, removal, failure to properly maintain and/or
                    monitor storage tanks on or prior to the Closing Date; or

          (ix)      any violations, fees, obligations or failures to comply with
                    any and all environmental permit requirements on or prior to
                    the Closing Date.

7.2 INDEMNIFICATION BY PURCHASER

     (a)  General - Subject to Section 7.4 hereof, Purchaser covenants and
          agrees to defend, indemnify and hold each Vendor harmless for, from
          and against any and all damages, losses, liabilities (absolute and
          contingent), fines, penalties, costs and expenses (including, without
          limitation, reasonable counsel fees and costs and expenses incurred in
          the investigation, defense or settlement of any claim covered by this
          indemnity) with respect to or arising out of any demand, claim,
          inquiry, investigation, proceeding, action and/or cause of action that
          any Vendor may suffer or incur by reason of: (a) the inaccuracy of any
          of the representations or warranties of Purchaser contained in this
          Agreement, or any of the agreements, certificates, documents, exhibits
          or schedules delivered by Purchaser in connection with this Agreement;
          and (b) the failure to comply with, the breach


                                       32
<PAGE>   33
          or the default by Purchaser of any of the covenants, warranties or
          agreements made by Purchaser in this Agreement, or any of the
          agreements, certificates, documents, exhibits or schedules delivered
          by Purchaser in connection with this Agreement.

     (b)  Environmental - Subject to Section 7.4 hereof, Purchaser covenants and
          agrees to defend, indemnify and hold each Vendor harmless for, from
          and against any and all damages, losses, liabilities (absolute and
          contingent), fines, penalties, costs and expenses (including, without
          limitation, reasonable counsel fees and costs and expenses incurred in
          the investigation, defense or settlement of any claim covered by this
          indemnity) with respect to or arising out of any demand, claim,
          inquiry, investigation, proceeding, action or cause of action brought
          by any governmental agency or instrumentality or any Person other than
          Vendors which any Vendor may suffer or incur by reason of:

          (i)       any generation, transportation, storage, treatment or
                    disposal of industrial, toxic or hazardous substances or
                    solid or hazardous wastes occurring after the Closing Date
                    including, without limitation, any waste or other disposal
                    activities or discharges that occur after the Closing Date
                    at a facility on which any portion of the business of the
                    Company is conducted, any waste or other disposal activities
                    or discharges that occur after the Closing Date off of any
                    such facility with regard to wastes and other substances
                    generated after the Closing Date on such facility, and any
                    waste or other disposal activities or discharges that occur
                    after the Closing Date on real estate owned or leased by the
                    Company, at any time after the Closing Date whether or not
                    the Company owns or leases such real estate at the time such
                    waste or other disposal activities or discharges are
                    engaged in, and whether or not the Company performs such
                    waste or other disposal activities or discharges;

          (ii)      any spills, discharges, leaks, emissions, injections,
                    escapes, dumping, or any releases as defined now or in the
                    future under the Comprehensive Environmental Response,
                    Compensation, and Liability Act of 1980, P.L. 96-510, as
                    amended or reauthorized from time to time, or any other
                    similar federal, state or local laws, statutes, rules or
                    regulations occurring after the Closing Date, including, but
                    not limited to, both those releases or incidents involving
                    environmental contamination which require notification or
                    reporting to appropriate federal, state or local officials
                    or agencies, or clean-up or remedial activities and those
                    releases or incidents which occurred prior to the effective
                    date of any requirements imposing such notification or
                    reporting obligations or clean-up or remedial activities,
                    but which would have been subject to such obligations if
                    they had occurred subsequent to the effective date of such
                    requirements;

          (iii)     any discharges to surface waters or groundwaters occurring
                    after the Closing Date;


                                       33
<PAGE>   34
          (iv)      any air emissions occurring after the Closing Date;

          (v)       the exposure after the Closing Date of and resulting
                    consequences to any persons, including, but not limited to,
                    employees of Purchaser to any mineral, chemical or
                    industrial product, raw material intermediate, by-product
                    or waste, or substance created, generated, processed,
                    handled or originated after the Closing Date at a facility
                    at which Purchaser, or the Company conducts business after
                    the Closing Date or otherwise used after the Closing Date by
                    Purchaser or the Company in the conduct of its business or
                    contained in or constituting a part of merchandise which is
                    sold by Purchaser or the Company after the Closing Date;

          (vi)      any violations by Purchaser or the Company occurring after
                    the Closing Date of federal, state or local (A)
                    Environmental Laws, or (B) occupational or employee health
                    and safety laws;

          (vii)     any and all actions, failures to act and negligence in
                    monitoring, maintaining and upkeep of on-site storage,
                    treatment and disposal facilities after the Closing Date;

          (viii)    any misuse, removal, failure to properly maintain and/or
                    monitor storage tanks after the Closing Date; and

          (ix)      any violations, fees, obligations or failure to comply with
                    any and all environmental permit requirements after Closing
                    Date.

7.3 NOTICE AND RIGHT TO DEFEND THIRD-PARTY CLAIMS - Promptly upon receipt of
notice of any claim, demand or assessment or the commencement of any suit,
action or proceeding with respect to which indemnity may be sought pursuant to
this Agreement, the party seeking to be indemnified or held harmless (the
"Indemnitee") shall notify in writing, if possible, within sufficient time to
respond to such claim or answer or otherwise plead in such action (but in any
event within thirty (30) days), the party from whom indemnification is sought
(the "Indemnitor"). In case any claim, demand or assessment shall be asserted,
or suit, action or proceeding commenced against the Indemnitee, the Indemnitor
shall be entitled, at the Indemnitor's expense, to participate therein, and, to
the extent that it may wish, to assume the defense, conduct or settlement
thereof, at its own expense, with counsel satisfactory to the Indemnitee, whose
consent to the selection of counsel shall not be unreasonably withheld or
delayed, provided that the Indemnitor confirms to the Indemnitee that it is a
claim to which Indemnitee's rights of indemnification apply. The Indemnitor
shall have the right to settle or compromise monetary claims; however, as to any
other claim, the Indemnitor shall first obtain the prior written consent from
the Indemnitee, which consent shall be exercised in the sole discretion of the
Indemnitee. After notice from the Indemnitor to the Indemnitee of Indemnitor's
intent so to assume the defense, conduct, settlement or compromise of such
action, the Indemnitor shall not be liable to the Indemnitee for any legal or
other expenses (including, without limitation, settlement costs) subsequently
incurred by the Indemnitee in connection with the defense, conduct, settlement
or compromise of such action while the Indemnitor is diligently defending,
conducting, settling or compromising such action. The Indemnitor shall be
afforded at least thirty (30) days, at its sole


                                       34
<PAGE>   35
cost and expense, to resist, defend and compromise any claim for which
indemnification is sought. The Indemnitor shall keep the Indemnitee promptly
apprised of the status of the suit, action or proceeding and shall make
Indemnitor's counsel available to the Indemnitee, at the Indemnitor's expense,
upon the request of the Indemnitee. The Indemnitee shall reasonably cooperate
with the Indemnitor in connection with any such claim and shall make personnel,
books and records and other information relevant to the claim available to the
Indemnitor during normal business hours to the extent that such personnel, books
and records and other information are in the possession and/or control of the
Indemnitee. If the Indemnitor decides not to participate, the Indemnitee shall
be entitled, at the Indemnitor's expense, to defend, conduct, settle and/or
compromise such matter with counsel satisfactory to the Indemnitor, whose
consent to the selection of counsel shall not be unreasonably withheld or
delayed.

7.4 SURVIVAL OF OBLIGATIONS - The liability of Vendors and Purchaser for
indemnification pursuant to this Article 7 shall (i) survive until terminated by
the applicable statute of limitations as to matters relating to: (a) ownership
and title to any of the assets of the Company; (b) ownership and title to the
capital stock of the Company; (c) competency to execute and deliver documents to
effect the transactions contemplated thereby and hereby, and the legal, binding
and enforceable nature thereof and hereof; (d) the environment; and (e) taxes;
(ii) expire three (3) years from the Closing Date with respect to claims not
made prior thereto relating to any price or reimbursement adjustment under any
contract or arrangement with the United States Government, any state government,
or any insurer or healthcare provider organization involving any liability,
claim and/or fraud with respect to billings or reimbursement under either
Medicare or Medicaid for services provided by the Company prior to the Closing
Date; and (iii) expire two (2) years from the Closing Date with respect to
claims not made prior thereto relating to all other matters not referenced in
this Section 7.4. This Section in no way limits any claims that an Indemnitee
may have against an Indemnitor for fraud or for the breach of any direct
covenant made by the Indemnitor to the Indemnitee contained in this Agreement or
the other agreements delivered in connection therewith.

                                   ARTICLE 8

                                  TERMINATION

8.1 RIGHT TO TERMINATE - Notwithstanding anything to the contrary contained
herein, this Agreement and the transactions contemplated hereby may be
terminated at any time prior to the Closing: (a) by Purchaser if the conditions
precedent set forth in Section 4.1 are not satisfied or waived in writing by
Purchaser; or (b) by Vendors if the conditions precedent set forth in Section
4.2 are not satisfied or waived in writing by Vendors. In addition, this
Agreement shall terminate if the Closing has not occurred by April 15, 1997,
unless extended by written agreement of the Parties hereto.


                                       35
<PAGE>   36
                                    ARTICLE 9

                                     GENERAL

9.1 DISCLOSURE SCHEDULES - The Schedules referred to in Section 3.1 and Section
3.2 of this Agreement reflect information supplied to Purchaser and Vendors,
respectively, in the course of their investigation of the Company and Purchaser,
respectively. Vendors may supplement or amend any Schedule from time to time
prior to or at the Closing, by notice in accordance with the terms of this
Agreement, including by delivering one or more supplements or amendments to
correct any matter which would constitute a breach of any representation or
warranty contained herein. All references to any Schedule hereto which is
supplemented or amended as provided in this Section 9.1 shall, for all purposes,
whether or not the transactions contemplated hereby occur, be deemed to be a
reference to such Schedule as so supplemented or amended.

9.2 PUBLIC NOTICES - All public notices to third parties and all other publicity
concerning the transactions contemplated by this Agreement shall be jointly
planned and coordinated by the Vendors and the Purchaser and no Party shall act
unilaterally in this regard without the prior approval of the Vendors and the
Purchaser or the other of them.

9.3 EXPENSES - The expenses incurred by each party hereto in connection with
this Agreement and the transactions provided herein shall be borne by such
party. Notwithstanding the foregoing, all professional fees incurred by the
Vendors in connection with the transactions contemplated by this Agreement shall
be borne by the Vendors and all expenses incurred in connection with the
preparation of any environmental reports after the date of execution of this
Agreement with respect to the real property owned or leased by the Company shall
be borne by the Purchaser (which reports shall remain the property of the
Purchaser following the Closing).

9.4 TIME - Time shall be of the essence hereof.

9.5 NOTICES - Any notice, direction or other document required or permitted to
be given hereunder or for the purposes hereof (hereinafter in this Section 9.5
called a "notice") to any Party shall be in writing and shall be sufficiently
given if delivered personally, or if sent by prepaid registered mail or if
transmitted by telex, facsimile or other form of recorded communication tested
prior to transmission to such Party:

         (a)      in the case of a notice to the Vendors to:

                            Robert E. Ramsey, Jr.
                            222 Main Street East
                            Mesa, Arizona 85201


                                       36
<PAGE>   37
                  with a copy to the Vendors' Counsel at

                            Gallagher & Kennedy, P.A.
                            2600 North Central Avenue
                            Phoenix, AZ 85004-3020
                            Attention: Terence W. Thompson, Esq.
                            with a facsimile number of (602) 257-9459.

         (b)      in the case of a notice to the Purchaser at

                            8401 E. Indian School Road
                            Scottsdale, Arizona  85251
                            Attention:  Warren S. Rustand
                            with a facsimile number of (602) 481-3328

                  with a copy to Purchaser's Counsel at

                            O'Connor Cavanagh Anderson
                            Killingsworth & Beshears, P.A.
                            One E. Camelback Road, Suite 1100
                            Phoenix, Arizona  85012
                            Attention:  John B. Furman, Esq.
                            with a facsimile number of (602) 263-2900

or at such other address as the Party to whom such writing is to be given shall
have last notified the Party giving the same in the manner provided in this
section. Any notice delivered in person to the Party to whom it is addressed as
hereinbefore provided shall be deemed to have been given and received on the day
it is so delivered at such address, provided that if such day is not a Business
Day then the notice shall be deemed to have been given and received on the first
Business Day next following such day. Any notice mailed as aforesaid shall be
deemed to have been given and received on the seventh Business Day following the
date of its mailing. Any notice transmitted by telex, facsimile or other form of
recorded communication shall be deemed given and received on the Business Day of
its transmission.

9.6 ASSIGNMENT - Neither this Agreement nor any rights or obligations hereunder
shall be assignable by any Party without the prior written consent of the other
Party hereto; provided, however, that the Vendors shall be entitled to assign
their rights to receive payments hereunder (or under any related documents) to
any person without the consent of the Purchaser. Subject thereto, this Agreement
shall enure to the benefit of and be binding upon the Parties and their
respective heirs, executors, administrators and successors (including any
successor by reason of amalgamation of the Purchaser) and permitted assigns.

9.7 FURTHER ASSURANCES - The Parties hereto shall with reasonable diligence do
all such things and provide all such reasonable assurances as may be required to
consummate the transactions contemplated hereby, and each Party shall provide
such further documents or instruments required by any other Party as may be
reasonably necessary or desirable to effect the purpose of this Agreement and
carry out its provisions, whether before or after the Closing.


                                       37
<PAGE>   38
9.8 SEVERABILITY - If any covenant or provision of this Agreement (other than
the provisions pertaining to payments to be made to the Vendors) is prohibited
in whole or in part in any jurisdiction, such covenant or provision shall, as to
such jurisdiction, be ineffective to the extent of such prohibition without
invalidating the remaining covenants and provisions hereof and shall, as to such
jurisdiction, be deemed to be severed from this Agreement to the extent of such
prohibition.

9.9 COUNTERPARTS - This Agreement may be executed by the Parties in separate
counterparts (and by facsimile transmission) each of which when so executed and
transmitted or delivered shall be an original, but all such counterparts shall
together constitute one and the same instrument.

9.10 MEDIATION AND ARBITRATION - Any dispute, controversy or claim (including
without limitation tort claims, requests for provisional remedies or other
interim relief, and issues as to the arbitrability of any matter) arising out of
or relating to this Agreement, or breach thereof, (a) shall be settled by
negotiation at a meeting between the Vendors and the chief executive officer of
the Purchaser held in Phoenix, Arizona within 5 days after notice given by any
party hereto to the other parties hereto, and (b) if within that 5 day period
settlement cannot be achieved through negotiation, it shall be settled (i)
first, by the parties trying in good faith to settle the dispute by mediation
under the Commercial Mediation Rules of the American Arbitration Association
("AAA") (such mediation session to be held in Phoenix, Arizona and to commence
with 10 days of the appointment of the mediator by the AAA), and (ii) if the
controversy, claim or dispute cannot be settled by mediation, then by
arbitration administered by the AAA under its Commercial Arbitration Rules and
in accordance with its expedited hearing procedures (such arbitration to be held
in Phoenix, Arizona before a single arbitrator by the AAA), and judgment on the
award rendered by the arbitrator may be entered in any court having jurisdiction
thereof.

9.11 ATTORNEYS' FEES - If any action is necessary to enforce the terms of this
Agreement, the prevailing party shall be entitled to recover from the other
party all costs, expenses and fees incurred by the prevailing party (including
reasonable attorneys' fees, costs and disbursements) in addition to other relief
to which the prevailing party may be entitled.


                                       38
<PAGE>   39
     IN WITNESS WHEREOF, the Parties have set their hand this 25th day of
February, 1997 through our trust in God and our service to others. . . . for
life.

                              Rural/Metro Corporation, a Delaware corporation


                              By:  /s/ James H. Bolin
                                   ---------------------------------------------
                                        James H. Bolin, President

                              /s/ Robert E. Ramsey, Jr.
                              --------------------------------------------------
                              Robert E. Ramsey, Jr., individually

                              /s/ Patrick McGroder
                              --------------------------------------------------
                              Patrick McGroder, individually

                              /s/ Barry Landon
                              --------------------------------------------------
                              Barry Landon, individually

                              /s/ Gary Ramsey
                              --------------------------------------------------
                              Gary Ramsey, individually


                                       39
<PAGE>   40
                                CONSENT OF SPOUSE

     The undersigned spouse of Robert E. Ramsey, Jr., who is a party to the
above Agreement of Purchase and Sale, pertaining to the sale of the stock of
Southwest General Services, Inc., an Arizona corporation (the "Agreement"),
hereby declares, contemporaneously with the execution of the Agreement, that she
has read the Agreement in its entirety, and being fully convinced of the wisdom
and equity of the terms of the Agreement, and in consideration of the premises
and of the provisions of the Agreement, hereby expresses her consent to the
execution and consummation of the Agreement by Robert E. Ramsey, Jr.

     The undersigned further agrees that in the event of the death of Robert E.
Ramsey, Jr., the dissolution of their marriage, or any occurrence contemplated
by the Agreement that gives rise to any liability or obligation of Robert E.
Ramsey, Jr., the provisions of the Agreement shall be binding upon her to the
extent of any community property she may now have or hereafter acquire, and any
and all separate property that she may hereafter possess which arises (directly
or indirectly) from any consideration given to Robert E. Ramsey, Jr. pursuant to
the Agreement or any agreement executed in connection thereto.

     The undersigned further agrees that she will, at any and all times, make,
execute and deliver such instruments and documents as may be reasonably
necessary to carry out the provisions of the Agreement, provided that no such
documents require the incurring of any liabilities in excess of that already
provided in the Agreement.

     Dated this 24th day of February, 1997.


                              /s/ Virginia (Jenny) L. Norton
                              --------------------------------------------------
                              Virginia (Jenny) L. Norton

State of Arizona  )
County of Maricopa)

The foregoing instrument was acknowledged before me this 24th day of February,
1997 by Virginia (Jenny) L. Norton.

[SEAL]                      /s/ Jacque Tenge
                            -----------------------------
                            Notary Public
<PAGE>   41
                                CONSENT OF SPOUSE

     The undersigned spouse of Patrick McGroder, who is a party to the above
Agreement of Purchase and Sale, pertaining to the sale of the stock of Southwest
General Services, Inc., an Arizona corporation (the "Agreement"), hereby
declares, contemporaneously with the execution of the Agreement, that she has
read the Agreement in its entirety, and being fully convinced of the wisdom and
equity of the terms of the Agreement, and in consideration of the premises and
of the provisions of the Agreement, hereby expresses her consent to the
execution and consummation of the Agreement by Patrick McGroder.

     The undersigned further agrees that in the event of the death of Patrick
McGroder, the dissolution of their marriage, or any occurrence contemplated by
the Agreement that gives rise to any liability or obligation of Patrick
McGroder, the provisions of the Agreement shall be binding upon her to the
extent of any community property she may now have or hereafter acquire, and any
and all separate property that she may hereafter possess which arises (directly
or indirectly) from any consideration given to Patrick McGroder pursuant to the
Agreement or any agreement executed in connection thereto.

     The undersigned further agrees that she will, at any and all times, make,
execute and deliver such instruments and documents as may be reasonably
necessary to carry out the provisions of the Agreement, provided that no such
documents require the incurring of any liabilities in excess of that already
provided in the Agreement.

     Dated this 25th day of February, 1997.


                                   /s/ Susan McGroder
                                   -------------------------
                                        Susan McGroder

State of Arizona  )
                  )  
County of Maricopa)

  On this 25 day of February, 1997, before me, the undersigned Notary Public,
personally appeared Susan McGroder who acknowledged to me that she signed the 
foregoing instrument for the purposes and contents therein contained.




                             

My Commission expires:
      6-1-97                                 /s/ Deborah A. Francis
- ---------------------                     -----------------------------
                                            Notary Public
<PAGE>   42
                                CONSENT OF SPOUSE

     The undersigned spouse of Barry Landon, who is a party to the above
Agreement of Purchase and Sale, pertaining to the sale of the stock of Southwest
General Services, Inc., an Arizona corporation (the "Agreement"), hereby
declares, contemporaneously with the execution of the Agreement, that she has
read the Agreement in its entirety, and being fully convinced of the wisdom and
equity of the terms of the Agreement, and in consideration of the premises and
of the provisions of the Agreement, hereby expresses her consent to the
execution and consummation of the Agreement by Barry Landon.

     The undersigned further agrees that in the event of the death of Barry
Landon, the dissolution of their marriage, or any occurrence contemplated by the
Agreement that gives rise to any liability or obligation of Barry Landon, the
provisions of the Agreement shall be binding upon her to the extent of any
community property she may now have or hereafter acquire, and any and all
separate property that she may hereafter possess which arises (directly or
indirectly) from any consideration given to Barry Landon pursuant to the
Agreement or any agreement executed in connection thereto.

     The undersigned further agrees that she will, at any and all times, make,
execute and deliver such instruments and documents as may be reasonably
necessary to carry out the provisions of the Agreement, provided that no such
documents require the incurring of any liabilities in excess of that already
provided in the Agreement.

     Dated this 25th day of February, 1997.


                                   /s/ Margaret Anne Landon
                                   -----------------------------------
                                          Margaret Anne Landon
State of Arizona  )
County of Maricopa)

The foregoing was acknowledged before me this 25th day of February,
1997 by Margaret Anne Landon.

[SEAL]                      /s/ Jacque Tenge
                            -----------------------------
                            Notary Public
<PAGE>   43
                                CONSENT OF SPOUSE

     The undersigned spouse of Gary Ramsey, who is a party to the above
Agreement of Purchase and Sale, pertaining to the sale of the stock of Southwest
General Services, Inc., an Arizona corporation (the "Agreement"), hereby
declares, contemporaneously with the execution of the Agreement, that she has
read the Agreement in its entirety, and being fully convinced of the wisdom and
equity of the terms of the Agreement, and in consideration of the premises and
of the provisions of the Agreement, hereby expresses her consent to the
execution and consummation of the Agreement by Gary Ramsey.

     The undersigned further agrees that in the event of the death of Gary
Ramsey, the dissolution of their marriage, or any occurrence contemplated by the
Agreement that gives rise to any liability or obligation of Gary Ramsey, the
provisions of the Agreement shall be binding upon her to the extent of any
community property she may now have or hereafter acquire, and any and all
separate property that she may hereafter possess which arises (directly or
indirectly) from any consideration given to Gary Ramsey pursuant to the
Agreement or any agreement executed in connection thereto.

     The undersigned further agrees that she will, at any and all times, make,
execute and deliver such instruments and documents as may be reasonably
necessary to carry out the provisions of the Agreement, provided that no such
documents require the incurring of any liabilities in excess of that already
provided in the Agreement.

     Dated this 25th day of February, 1997.


                                   /s/ Denise Ramsey
                                   -----------------------------------
                                             Denise Ramsey
State of Arizona  )
County of Maricopa)

The foregoing instrument was acknowledged before me this 25th day of
February, 1997.

[SEAL]                      /s/ Jacque Tenge
                            -----------------------------
                            Notary Public
<PAGE>   44
                                   APPENDIX J

          (i) All real property leased by the Company from NRM Properties, Inc.
or Chaparral Properties, Inc. (the "Leased Properties") is set forth in Schedule
"J" and is zoned as set forth on Schedule "J", pursuant to the ordinances of the
applicable cities, towns, villages or townships identified on such Schedule "J",
and is not located in an area that has been identified by the Secretary of
Housing and Urban Development as an area of special flood hazard. The uses to
which such real property are presently put do not violate or conflict with the
applicable provisions of such zoning ordinances, or other zoning laws of such
cities, towns, villages or townships or any other governmental body.

          (ii) The Company does not sublease any of its Leased Properties. The
Company does not lease any of its owned real property.

          (iii) Neither the Company nor any Vendor, nor any one or more of them,
has retained or engaged any real estate broker, commission agent or other person
who is or may be entitled to payment of a commission or finder's fee or other
compensation in connection with any of the Leased Properties.

          (iv) As to the Leased Properties, the present use and operation of the
real property is authorized by and in compliance with all applicable building,
fire, health, labor and safety laws, ordinances, rules and regulations
applicable to the real property, including, without limitation, OSHA, and the
Americans with Disabilities Act, and there is no litigation, action, proceeding
or any present plan or study by any governmental authority or any private person
or entity which in any way would affect the present use and operation of the
real property. There are in existence all licenses, permits and approvals that
are required for the use and operation of the Leased Properties, and no Vendor
has any reason to believe that any of the same are in jeopardy of being revoked
or not being reissued upon expiration.

          (v) No Vendor has any knowledge of any fact or condition existing
which would result or could result in the termination or reduction of the
current access from the Leased Properties to existing public roads and highways,
or of any reduction in sewer or other utility services presently serving the
Leased Properties. Leased Properties have direct access to dedicated roads and
highways and all utility services to the Leased Properties are furnished through
dedicated or perpetual easements.

          (vi) As to the Leased Properties, no Vendor has received notice from
any insurance company of any defects or inadequacies in such real property or
any part thereof which would materially and adversely affect the insurability of
the real property or the premiums for the insurance thereof.

          (vii) As to the Leased Properties, no Vendor has failed to disclose
any material conditions of disrepair or other adverse conditions or defects with
respect to such

                                  Appendix J-1
<PAGE>   45
real property or any portion thereof of which that Vendor has knowledge or
which, with the exercise of reasonable diligence, that Vendor should have known.

          (viii) As to the Leased Properties, no Vendor has any knowledge of any
planned public improvement which might result in a special assessment levied
against such real property. If any Vendor becomes aware of any of the foregoing
(whether arising before or after the date hereof) after the date hereof, but
prior to Closing, that Vendor shall give prompt written notice thereof to
Purchaser prior to Closing.

                                  Appendix J-2
<PAGE>   46

                   AMENDMENT TO AGREEMENT OF PURCHASE AND SALE

WHEREAS, RURAL/METRO CORPORATION, a Delaware corporation ("Purchaser"), ROBERT
E. RAMSEY, JR., an individual ("R. Ramsey"), BARRY LANDON ("Landon"), PATRICK
MCGRODER ("McGroder"), and GARY RAMSEY ("G. Ramsey") (R. Ramsey, McGroder,
Landon and G. Ramsey may be hereinafter referred to collectively as the
"Vendors"), signed that certain Agreement of Purchase and Sale, made as of
February 25, 1997 (the "Agreement"), with respect to the purchase of all the
issued and outstanding shares of the stock of SOUTHWEST GENERAL SERVICES, INC.,
an Arizona corporation (the "Company").

WHEREAS, Purchaser and Vendors desire to extend the Closing Date (as defined in
the Agreement), and amend the Agreement as set forth in this Amendment.

NOW, THEREFORE, in consideration of the premises and the mutual agreements and
covenants herein contained (the adequacy of which consideration as to each of
the parties hereto is hereby mutually admitted), the parties hereto hereby amend
the Agreement as follows:

         1. Section 1.1(e) of the Agreement is hereby modified to read as
follows:

                 "Closing Date" means the earlier of May 30, 1997 or
                 five (5) business days following the satisfaction or
                 waiver of all conditions precedent to the
                 transactions contemplated by this Agreement, or such
                 other date as the Parties may mutually agree in
                 writing;"

         2. The last sentence of Section 8.1 of the Agreement is hereby amended
to read as follows:

                 "In addition, this Agreement shall terminate if the
                 Closing has not occurred by May 30, 1997, unless
                 extended by written agreement of the Parties hereto."

         3. This Amendment shall constitute a written extension as contemplated
by the original Section 8.1 of the Agreement.

         4. The terms and conditions set forth in the letter agreement, dated
April 15, 1997, by and among Purchaser, Bob Ramsey and Barry Landon, Trustee for
the Southwest
<PAGE>   47
ESOP, a copy of which letter agreement is attached hereto as Exhibit A, shall
constitute amendments and supplemental provisions to the Agreement, as
applicable.

         5. This Amendment may be executed by the parties hereto in separate
counterparts (and by facsimile transmission) each of which when so executed and
transmitted or delivered shall be an original, but all such counterparts shall
together constitute one and the same instrument.

         IN WITNESS WHEREOF, the parties hereto have set their hand as of the
15th day of April, 1997, through our trust in God and our service to others ...
for life.

                                        RURAL/METRO CORPORATION, a
                                        Delaware corporation


                                        By: /s/ James H. Bolin
                                        ____________________________________
                                           James H. Bolin, President

                                            /s/ Robert E. Ramsey, Jr.
                                        _______________________________________
                                        Robert E. Ramsey, Jr., individually

                                            /s/ Patrick McGroder
                                        _______________________________________
                                        Patrick McGroder

                                            /s/ Barry Landon
                                        _______________________________________
                                        Barry Landon

                                            /s/ Gary Ramsey
                                        _______________________________________
                                        Gary Ramsey


                                        2
<PAGE>   48
I HEREBY CONSENT TO THE TERMS
OF THIS AMENDMENT as of the 15th day
of April, 1997:



_______________________________
Virginia (Jenny) L. Norton


_______________________________
Susan McGroder


_______________________________
Margaret Anne Landon


_______________________________
Denise Ramsey


                                        3
<PAGE>   49
                                                                EXHIBIT A

April 15, 1997


James H. Bolin, President
Rural/Metro Corporation
8401 E. Indian School Road
Scottsdale, Arizona 85251

Dear Jim:

        In response to our phone conversation in which we discussed the
extension of the Agreement of Purchase and Sale between Rural/Metro and SW
General, Inc., Southwest Ambulance of Casa Grande, Inc., Medical Emergency
Devices and Services (MEDS), Inc. and Southwest General Services, Inc., I am
asking for your acknowledgment of the following clarifications:

1.  SW General, Inc. shall, effective May 1, 1997, enter into a lease for the
3.5 acres of land adjacent to our facility at 617 W. Main. This land has been
used by Southwest since last year without any rental fees being paid. The need
for a new lease was disclosed during the due diligence process and will be
added to the Book of Schedules under Schedule "J".

2.  The original "Normalization Work Sheet" which was presented to you in
January of this year was omitted from the Schedules. The Normalization Work
Sheet will be added to the Book of Schedules under Section "H".

Additionally, Rural Metro, as presented in the Normalization Worksheet, has
acknowledged the annual draws/management fees paid to Bob Ramsey associated
with the ownership of the "S" corporations and SW General, Inc. These
draws/management fees shall continue in practice until the closing of the
Agreements at which time they shall cease and the start up of the Ramsey
employment contract shall take effect.

3.  Prior to 12/31/96 the equity of Southwest Ambulance of Casa Grande, Inc.
and MEDS were drawn out by Bob Ramsey and loaned back to the corporations as
represented by the "Notes Payable" in Schedules "A" & "C", on the respective
balance sheets of the corporations. Subsequent to 1/1/97, Bob Ramsey has drawn
the
<PAGE>   50
equity out of Southwest General Services, Inc. The equity and all state and
federal taxes have been met by these transactions.

4. From the time period from January 1, 1997 through the date of closing all
profits of the identified "S" corporations are passed on to SW General, Inc.
through a management fee resulting in a zero equity position. This action is
reflected in the financial statements of February and March, 1997 as presented
to Rural/Metro through the due diligence process. (See Schedule "A")

5. As identified in Section 5.1(b)(ii) of the Agreement, Southwest shall, prior
to close and during the normal course of business, expense such items as
management fees, annual bonus', required capital expenditures (except the two
new ambulances previously identified by SW) and miscellaneous expenses, which
shall be acceptable to Rural/Metro so long as the $2,045,000 of this section is
maintained per the Agreement.

6. Two new ambulances which were previously disclosed must be funded at this
time. This expenditure, as invoiced, shall not be utilized in the debt formulas
identified in the warranties with the original Purchase and Sale Agreement.

7. Rural/Metro acknowledges that Ramsey may exceed the $2,045,000 as identified
in section 5 above, for the purpose of purchasing the ownership interests of
William Kordsiemon in MOROKO, Inc. Utilization of these funds in excess of the
$2,045,000 will be deducted from the MEDS purchase transaction.

8. Rural/Metro re-clarifies the understanding as to Bob Ramsey's position,
responsibility and reporting structure as follows:

        - Bob Ramsey will serve as President and CEO of Southwest companies with
          direct management authority over the Arizona ambulance operations of
          Rural/Metro except where the fire department personnel directly
          operates the ambulance unit. In this capacity he shall report directly
          to Bob Edwards or to Warren Rustand and not to any Regional President.

        - Bob Ramsey agrees to serve as a member of the Board of Directors of
          Rural/Metro Corporation.

        - Bob Ramsey will serve in a senior executive position as a
          vice-president of Rural/Metro (reference: Employment Agreement and
          Letter of Intent) reporting to the office of the CEO under the
          direction of Warren Rustand.

<PAGE>   51
        (See also the Letter of Intent dated January 31, 1997 and the Agreements
        of Purchase and Sale dated February 25, 1997 as referenced herein and
        exhibited in Schedule "C" of the Agreement.)

        As agreed, the closing date will be extended to Friday, May 30, 1997.
Additionally, before implementation, I would like to initially meet with
Warren, Bob and yourself to review the initial and mid-term efficiencies
created by the acquisition and merging of the entities.

        This letter of agreement and extension, as signed by the parties below,
shall be incorporated into the Agreement.

        ACKNOWLEDGED AND ACCEPTED AS OF THE DATE FIRST WRITTEN ABOVE.

                                                RURAL/METRO CORPORATION



/s/ Bob Ramsey                                      /s/ James Bolin
- ------------------------------                  By: --------------------------
Bob Ramsey                                                 James Bolin
                                                Its: President



/s/ Barry Landon
- ------------------------------
Barry Landon
Trustee for the Southwest ESOP



cc: Warren Rustand

<PAGE>   52
               SECOND AMENDMENT TO AGREEMENT OF PURCHASE AND SALE

WHEREAS, RURAL/METRO CORPORATION, a Delaware corporation ("Purchaser"), ROBERT
E. RAMSEY, JR., an individual ("R. Ramsey"), BARRY LANDON ("Landon"), PATRICK
MCGRODER ("McGroder"), and GARY RAMSEY ("G. Ramsey") (R. Ramsey, Landon,
McGroder, and G. Ramsey may be hereinafter referred to collectively as the
"Vendors"), signed that certain Agreement of Purchase and Sale, made as of
February 25, 1997, and that certain Amendment to Agreement of Purchase and Sale,
made as of April 15, 1997 (together, the "Agreement"), with respect to the
purchase of all the issued and outstanding shares of the stock of SOUTHWEST
GENERAL SERVICES, INC., an Arizona corporation (the "Company"). All defined
terms used herein but not otherwise defined shall have the meaning set forth in
the Agreement.

WHEREAS, Purchaser and Vendors desire to extend the Closing Date (as defined in
the Agreement), and amend the Agreement as set forth in this Second Amendment.

NOW, THEREFORE, in consideration of the premises and the mutual agreements and
covenants herein contained (the adequacy of which consideration as to each of
the parties hereto is hereby mutually admitted), the parties hereto hereby amend
the Agreement as follows:

         1. Section 1.1(e) of the Agreement is hereby modified to read as
follows:

                 "Closing Date" means the earlier of July 31, 1997 or
                 five (5) business days following the satisfaction or
                 waiver of all conditions precedent to the
                 transactions contemplated by this Agreement, or such
                 other date as the Parties may mutually agree in
                 writing;"

         2. The last sentence of Section 8.1 of the Agreement is hereby amended
to read as follows:

                 "In addition, this Agreement shall terminate if the
                 Closing has not occurred by July 31, 1997, unless
                 extended by written agreement of the Parties hereto."

         3. This Second Amendment shall constitute a written extension as
contemplated by the original Section 8.1 of the Agreement.

         4. The terms and conditions set forth in the letter agreement, dated
May 30, 1997, by and among Purchaser, Bob Ramsey and Barry Landon, Trustee for
the Southwest
<PAGE>   53
ESOP, a copy of which letter agreement is attached hereto as Exhibit A (the
"Letter Agreement"), shall constitute amendments and supplemental provisions to
the Agreement, as applicable, subject to the following: Paragraph 5 of the
Letter Agreement shall be interpreted as a $277,000 indemnification threshold
with respect to claims other than Third Party Claims, in the same manner as the
$50,000 indemnification threshold for Third Party Claims in Section 7.5 of the
Agreement of Purchase and Sale regarding SW General, Inc., and the $277,000
indemnification threshold shall be an aggregate threshold against the liability
of the Vendors for indemnification arising from any of the Agreements of
Purchase and Sale pertaining to the Southwest Companies.

         5. The Vendors represent and warrant that the Company is and shall be
at the Closing a valid S-Corporation as defined in Section 1361 of the Code.

         6. This Second Amendment may be executed by the parties hereto in
separate counterparts (and by facsimile transmission) each of which when so
executed and transmitted or delivered shall be an original, but all such
counterparts shall together constitute one and the same instrument.

         IN WITNESS WHEREOF, the parties hereto have set their hand as of the
30th day of May, 1997, through our trust in God and our service to others ...
for life.

WE HEREBY CONSENT TO THE               RURAL/METRO CORPORATION, a              
TERMS OF THIS SECOND                   Delaware corporation                    
AMENDMENT as of the 30th day                                                   
of May, 1997:                                                                  
                                       By: /s/ James H. Bolin
                                          ____________________________________ 
                                          James H. Bolin, President
                                                                               
                                        /s/ Robert E. Ramsey, Jr.
_______________________________        _______________________________________
Virginia (Jenny) L. Norton             Robert E. Ramsey, Jr., individually  
                                                                             
                                                                             
                                        /s/ Patrick McGroder
_______________________________        _______________________________________
Susan McGroder                         Patrick McGroder                     
                                                                            
                                                                            
                                        /s/ Barry Landon
_______________________________        _______________________________________
Margaret Anne Landon                   Barry Landon                         
                                                                             
                                                                             
                                        /s/ Gary Ramsey
_______________________________        _______________________________________
Denise Ramsey                          Gary Ramsey                          


                                        2
<PAGE>   54
                THIRD AMENDMENT TO AGREEMENT OF PURCHASE AND SALE

         A. WHEREAS, RURAL/METRO CORPORATION, a Delaware corporation
("Purchaser"), ROBERT E. RAMSEY, JR., an individual ("R. Ramsey"), BARRY LANDON
("Landon"), PATRICK MCGRODER ("McGroder"), and GARY RAMSEY ("G. Ramsey") (R.
Ramsey, Landon, McGroder, and G. Ramsey may be hereinafter referred to
collectively as the "Vendors"), signed that certain Agreement of Purchase and
Sale, made as of February 25, 1997, that certain Amendment to Agreement of
Purchase and Sale, made as of April 15, 1997, and that certain Second Amendment
to Agreement of Purchase and Sale, made as of May 30, 1997, (the "Agreement"),
with respect to the purchase of all the issued and outstanding shares of the
stock of SOUTHWEST GENERAL SERVICES, INC., an Arizona corporation (the
"Company"). All defined terms used herein but not otherwise defined shall have
the meaning set forth in the Agreement;

         B. WHEREAS, the Agreement and exhibits thereto incorrectly state that
R. Ramsey is the registered and beneficial owner of 769 of the Purchased Shares;

         C. WHEREAS, R. Ramsey is the registered and beneficial owner of 469 of
the Purchased Shares and Patrick Cantelme ("Cantelme") is the registered and
beneficial owner of 300 of the Purchased Shares; and

         D. WHEREAS, Cantelme and the parties to the Agreement as originally
executed and delivered desire to amend the Agreement as provided herein.

         NOW, THEREFORE, in consideration of the premises and the mutual
agreements and covenants herein contained (the adequacy of which consideration
as to each of the parties hereto is hereby mutually admitted), the parties
hereto hereby amend the Agreement as follows:

         1. For all purposes under and in connection with the Agreement
(including any all amendments thereto, exhibits or schedules thereto and any
documents, agreements and instruments delivered at the Closing of the
Agreement), (a) the terms "Vendor" and "Vendors" shall be deemed to include
Cantelme, in addition to the Vendors named in the Agreement as originally
executed and delivered and (b) the ownership of Purchased Shares and the
allocation of the aggregate Purchase Price therefor, shall be changed to reflect
the fact that the 769 Purchased Shares incorrectly indicated as being held by R.
Ramsey are held by R. Ramsey as to 469 of such shares and by Cantelme as to 300
of such shares.

         2. The parties hereto agree that Cantelme shall be deemed a "Vendor"
for all purposes under or in connection with the Agreement, as if named as a
Vendor in the Agreement when and as originally executed by the original parties
thereto, and as if it had executed and delivered the Agreement when and as
originally executed by the original parties thereto. Cantelme and the parties to
the Agreement as originally executed and
<PAGE>   55
delivered agree that Cantelme and the other Vendors shall be jointly and
severally liable for the obligations of the Vendors as and to the extent set
forth in the Agreement.

         3. Cantelme and each of the Vendors named in the Agreement as
originally executed and delivered represent and warrant to Purchaser that (a)
the recitals set forth in paragraphs B and C above are true and correct as of
the date hereof, and (b) that Cantelme has full power and authority to execute
and deliver this Fourth Amendment.

         4. This Third Amendment may be executed by the parties hereto in
separate counterparts (and by facsimile transmission) each of which when so
executed and transmitted or delivered shall be an original, but all such
counterparts shall together constitute one and the same instrument.


                                        2
<PAGE>   56
         IN WITNESS WHEREOF, the parties hereto have set their hand as of the
30th day of June, 1997, through our trust in God and our service to others ...
for life.

WE HEREBY CONSENT TO THE
TERMS OF THIS THIRD
AMENDMENT as of the 30th day
of June, 1997:

RURAL/METRO CORPORATION, a
Delaware corporation



By:_________________________________
   Dean Hoffman, Director of
   Finance

       /s/ Robert E. Ramsey, Jr.
- ------------------------------------
       Robert E. Ramsey, Jr.

       /s/ Patrick McGroder
- ------------------------------------
       Patrick McGroder

       /s/ Barry Landon
- ------------------------------------
       Barry Landon

       /s/ Gary Ramsey
- ------------------------------------
       Gary Ramsey

       /s/ Patrick Cantelme
- ------------------------------------
       Patrick Cantelme


                                        3

<PAGE>   1
                                                                EXHIBIT 10.52

                         AGREEMENT OF PURCHASE AND SALE



         THIS AGREEMENT OF PURCHASE AND SALE ("Agreement") is made as of this
25th day of February, 1997


BETWEEN:

                 Rural/Metro Corporation, a Delaware corporation
                                  ("Purchaser")

                                      -and-

                      Robert E. Ramsey, Jr., an individual
        ("Ramsey" and also referred to herein as "Vendors" and "Vendor")



RECITALS:


         WHEREAS, the Vendor owns and controls all the issued and outstanding
shares of the stock of Medical Emergency Devices and Services (MEDS), Inc., an
Arizona corporation (the "Company");

         AND WHEREAS, the Vendor desires to sell and the Purchaser desires to
purchase all of the said issued and outstanding shares of the stock of the
Company owned by the Vendor all upon and subject to the terms and conditions
hereinafter set forth;

         NOW THEREFORE, in consideration of the premises and the mutual
agreements and covenants herein contained (the adequacy of which consideration
as to each of the parties hereto is hereby mutually admitted), the parties
hereto hereby covenant and agree as follows:

                                    ARTICLE 1

                  DEFINITIONS AND PRINCIPLES OF INTERPRETATION

1.1 DEFINITIONS - Whenever used in this Agreement, unless there is something in
the subject matter or context inconsistent therewith, the following words and
terms shall have the respective meanings ascribed to them as follows:
<PAGE>   2
         (a)      "Agreement" means this Agreement of Purchase and Sale and all
                  instruments supplemental hereto or in amendment or
                  confirmation hereof;

         (b)      "Business" means the business presently carried on by the
                  Company consisting of the provision of emergency and
                  non-emergency medical transportation services and related
                  billing and management services;

         (c)      "Business Day" means a day other than a Saturday, Sunday or
                  any day on which the principal commercial banks located in
                  Phoenix, Arizona are not open for business during normal
                  banking hours;

         (d)      "Closing" means the completion of the sale to and purchase by
                  the Purchaser of the Purchased Shares hereunder by the
                  transfer and delivery of documents of title thereto and the
                  payment of the purchase price therefore as contemplated
                  herein;

         (e)      "Closing Date" means the earlier of April 15, 1997 or five (5)
                  business days following the satisfaction or waiver of all
                  conditions precedent to this transaction, or such other date
                  as the Parties may mutually agree in writing;

         (f)      "Closing Time" means 10 o'clock a.m., Phoenix, Arizona local
                  time, on the Closing Date, or such other time on the Closing
                  Date as the Parties may agree;

         (g)      "Employment Agreement" means the employment agreement to be
                  entered into by and between Ramsey and Purchaser at the
                  Closing, as contemplated by the Agreement of Purchase and Sale
                  of even date herewith pertaining to SW General, Inc., an
                  Arizona corporation.

         (h)      "Financial Statements" means the unaudited financial
                  statements of the Company, including a balance sheet as of
                  December 31, 1996, and an operating statement for the twelve
                  (12) month period then ended; copies of which are annexed as
                  Schedule "A" hereto;

         (i)      "Parties" means, collectively, the Vendors and the Purchaser,
                  and "Party" means any one of them;

         (j)      "Person" means any individual, corporation, partnership,
                  limited liability company, trust or unincorporated association
                  or similar entity, and pronouns have a similarly extended
                  meaning;

         (k)      "Purchase Price" means the purchase price to be paid by the
                  Purchaser to the Vendors for the Purchased Shares as provided
                  in Section 2.1 hereof;

         (l)      "Purchased Shares" means all the issued and outstanding common
                  shares of the stock of the Company;


                                        2
<PAGE>   3
         (m)      "Southwest Companies" means, collectively, the Company,
                  Southwest Ambulance of Casa Grande, Inc., SW General Inc., and
                  Southwest General Services, Inc.

Terms defined in the preamble, recitals and body of this Agreement shall have
the same meanings herein as are ascribed thereto in the preamble, recitals and
body.

1.2 GENDER AND NUMBER - Words importing the singular include the plural and vice
versa; words importing gender include all genders.

1.3 ENTIRE AGREEMENT - This Agreement, including the Schedules and Exhibits
hereto, together with the agreements, certificates, and other documents and
instruments to be delivered pursuant hereto, constitute the entire agreement
between the Parties pertaining to the subject matter hereof and supersede all
prior agreements, understandings, negotiations and discussions, whether oral or
written, of the Parties and there are no warranties, representations or other
agreements between the Parties in connection with the subject matter hereof
except as specifically set forth herein and therein.

1.4 WAIVERS, ETC. - No supplement, modification, waiver or termination of this
Agreement shall be binding unless executed in writing by the Party to be bound
thereby. No waiver of any of the provisions of this Agreement, in whole or in
part, shall be deemed or shall constitute a waiver of any other provisions
hereof (whether or not similar), nor shall such waiver constitute a continuing
waiver unless otherwise expressly provided.

1.5 OTHER WORDS AND PHRASES - In this Agreement, unless otherwise expressly
provided (i) the words "hereof", "herein", "hereto" and "hereunder" and words of
similar import refer to this Agreement as a whole and not to the particular
Article, Section, Subsection, paragraph or other subdivision, and (ii) all
references to designated "Articles", "Sections", "Subsections", "paragraphs" or
other subdivisions are to the designated Articles, Sections, Subsections,
paragraphs and other subdivisions of this Agreement.

1.6 HEADINGS - The Article and Section headings contained herein are included
solely for convenience of reference, are not intended to be full or accurate
descriptions of the content thereof and shall not be considered part of this
Agreement.

1.7 APPLICABLE LAW - This Agreement and the rights, obligations and relations of
the Parties shall be governed by and construed in accordance with the laws of
the State of Arizona and the federal laws of the United States applicable
therein.

1.8 ACCOUNTING TERMS - All accounting terms shall have the meanings ascribed to
them in accordance with generally accepted accounting principles consistently
applied, and all references to "generally accepted accounting principles" shall
be deemed to be, unless otherwise specified, reference to accounting principles
which are generally accepted in the United States.



                                        3
<PAGE>   4
1.9 SCHEDULES AND APPENDICES - The following are the schedules and appendices
attached to and incorporated in this Agreement by reference and deemed to be an
integral part hereof:

         Schedule "A"   -   Financial Statements

         Schedule "B"   -   Authorized and Issued Share Capital, Share
                            Ownership, and Purchase Price Allocation for each of
                            the Vendors

         Schedule "C"   -   [Intentionally Omitted]

         Schedule "D"   -   [Intentionally Omitted]

         Schedule "E"   -   Operating Licenses

         Schedule "F"   -   Undisclosed Liabilities, Guaranties and Indemnities

         Schedule "G"   -   Absence of Changes

         Schedule "H"   -   Unusual Transactions

         Schedule "I"   -   Liens, Charges and Encumbrances

         Schedule "J"   -   Real Property Leases and Owned Real Property

         Schedule "K"   -   Vehicular Equipment Owned or Leased

         Schedule "L"   -   Revenue Contracts

         Schedule "M"   -   Contracts to Purchase Goods/Services

         Schedule "N"   -   Employment Contracts, Collective Agreements, Pension
                            or Similar Plans, Unfair Labor Practice Complaints

         Schedule "O"   -   Litigation

         Schedule "P"   -   Employees over $40,000

         Schedule "Q"   -   Insurance Policies

         Schedule "R"   -   Intellectual Property

         Schedule "S"   -   Third Party Approvals

         Schedule "T"   -   Environmental Matters


                                        4
<PAGE>   5
         Schedule "U"   -   Subsidiaries and Affiliates

         Schedule "V"   -   Bank Accounts

         Schedule "W"   -   Purchaser's Disclosure Schedule

         Appendix "J"   -   Certain Real Estate Representations and Warranties


                                    ARTICLE 2

                                PURCHASE AND SALE


2.1 PURCHASE PRICE - At the Closing Time, the Vendors shall sell and the
Purchaser shall purchase the Purchased Shares for an aggregate purchase price of
Thirteen Million, Three Hundred Thousand Dollars ($13,300,000), all of which
shall be paid in immediately available funds at the Closing.

2.2 ACTION BY VENDORS AND PURCHASER AT THE CLOSING TIME -


         (a)      Delivery of Certificates by the Vendors, etc. - The Vendors
                  shall transfer and deliver to the Purchaser at the Closing
                  stock certificates representing all the Purchased Shares duly
                  endorsed in blank for transfer or accompanied by irrevocable
                  stock transfer powers of attorney duly executed in blank, in
                  either case by the holders of record thereof, free and clear
                  of all liens, claims, rights, charges, encumbrances and
                  security interests of whatsoever kind and nature. The Vendors
                  shall take such steps as shall be necessary to cause the
                  Company to enter the Purchaser or its nominee upon the books
                  of the Company as the holder of the Purchased Shares and to
                  issue one or more share certificates to the Purchaser
                  representing the Purchased Shares;

         (b)      Payment to Vendors - At the Closing, the Purchaser shall pay
                  to the Vendors the Purchase Price of Thirteen Million, Three
                  Hundred Thousand Dollars ($13,300,000) by wire transfer
                  according to wire instructions provided to the Purchaser by
                  the Vendors prior to the Closing.

         (c)      Delivery of Other Documents - The Vendors and Purchaser shall
                  deliver all such other documents at the Closing as
                  contemplated herein.

2.3 PAYMENT OF OBLIGATIONS TO VENDORS - At the Closing, Purchaser shall pay by
wire transfer to Ramsey the aggregate amount of $415,101.89 and all interest
accrued thereon from February 11, 1997, through the Closing Date, which interest
accrues at the rate of $66.57 per



                                       5
<PAGE>   6
day. This will constitute repayment of all outstanding principal and accrued
interest owed to Ramsey by the Company as of the Closing Date for outstanding
loans.

2.4 [INTENTIONALLY OMITTED]

2.5 PLACE OF CLOSING - The Closing shall take place at the Closing Time at the
offices of O'Connor, Cavanagh, Anderson, Killingsworth & Beshears, P.A., One E.
Camelback Road, Suite 1100, Phoenix, Arizona or at such other place as may be
agreed upon by the Vendors and the Purchaser.

2.6 TAX TREATMENT - The acquisition of the Company shall be a purchase of stock
which is intended to be treated as a purchase of assets pursuant to an election
under Section 338(h)(10) of the Internal Revenue Code of 1986, as amended (the
"Code").

                                    ARTICLE 3

                         REPRESENTATIONS AND WARRANTIES

3.1 REPRESENTATIONS AND WARRANTIES OF VENDORS - To induce Purchaser to enter
into this Agreement and to perform its obligations hereunder, and with full
knowledge that Purchaser will rely thereon, the Vendors hereby represent and
warrant, jointly and severally, to the Purchaser the truth, accuracy and
completeness of the following:

         (a)      Enforceability of Obligations - This Agreement and each of the
                  other agreements referenced herein to which one or more
                  Vendors is a party have been duly executed and delivered by
                  each of such Vendors, and each of the Agreement and such other
                  agreements constitutes a valid and binding obligation of each
                  of the Vendors enforceable against each of them in accordance
                  with its terms.

         (b)      Right to Sell - The Vendors:

                  (i)      are the sole beneficial owners of the Purchased
                           Shares (which shares constitute all of the issued and
                           outstanding shares of the stock of the Company); and

                  (ii)     are the holders of record of all the Purchased Shares
                           (which shares constitute all of the issued and
                           outstanding shares of the stock of the Company) and
                           have good and marketable title to, and rightful
                           possession of, all of the Purchased Shares free and
                           clear of any liens, claims, rights, charges,
                           encumbrances, security interests of whatsoever kind
                           and nature or rights of others (other than the rights
                           of the Purchaser hereunder) and no Person (other than
                           the Purchaser hereunder) has any agreement, option or
                           any rights capable of becoming an agreement or option
                           for the acquisition of the Purchased Shares or any
                           other shares in the Company.



                                       6
<PAGE>   7
         (c)      Licenses, Registrations and Compliance - The Company is
                  registered, licensed or otherwise qualified as a corporation
                  to do business in each jurisdiction in which the nature of its
                  business or the property owned or leased by it makes such
                  registration, licensing or other qualification necessary, and
                  such registrations, licenses or qualifications (as the case
                  may be) are in good standing. The Company is not in violation
                  in any material respect of any applicable laws, regulations,
                  orders, rules, decrees, ordinances, licenses or operating
                  authorities. The licenses and operating authorities issued by
                  federal, state or local authorities to the Company, copies of
                  which are attached hereto as Schedule "E" (the "Operating
                  Licenses"), comprise all the material licenses, permits and
                  operating authorities held in respect of the Business. The
                  Operating Licenses are all of the material operating
                  authorities necessary or reasonably required for the carrying
                  on of the Business as presently conducted and the ownership
                  and use of its assets, property, and premises. Except as
                  described in Schedule "E" and subject to applicable
                  regulations and policies of the Arizona Department of Health
                  Services, the Operating Licenses are not subject to review or
                  notification and there is no litigation, arbitration or other
                  proceeding pending or threatened which would materially and
                  adversely affect the use of the Operating Licenses by the
                  Business or which may result in the revocation, cancellation,
                  suspension or any materially adverse modification of any of
                  such Operating Licenses.

         (d)      Organization and Valid Existence - The Company is duly
                  incorporated and organized, validly existing and in good
                  standing under the laws of the State of Arizona, and has all
                  necessary corporate power, authority and capacity to own and
                  lease its property and assets and to carry on the Business as
                  presently conducted by it. Each of the Vendors has the full
                  right, power, authority and capacity to execute and deliver
                  this Agreement and the other agreements referenced herein to
                  which any such Vendor is a party, to consummate the
                  transactions contemplated hereby and thereby, and to fully and
                  timely perform its obligations hereunder and thereunder.

         (e)      Capitalization - The authorized capital stock of the Company
                  and the total number of shares of the Company's capital stock
                  presently issued and outstanding are as set forth on Schedule
                  "B". All issued and outstanding common shares of the Company
                  have been duly authorized and validly issued, are fully paid
                  and non-assessable, and are free of pre-emptive rights.

         (f)      Financial Statements - Copies of the Financial Statements are
                  each true, complete and correct and have been prepared on an
                  accrual basis from the books and records of the Company, in
                  accordance with generally accepted accounting principles
                  applied on a basis consistent with that of the preceding
                  periods. The Financial Statements each fairly present in all
                  material respects a true, accurate and complete statement of
                  the financial condition, assets, liabilities and results of
                  operations of the Company as of the dates and for the periods
                  set forth therein.



                                       7
<PAGE>   8
         (g)      Absence of Undisclosed Liabilities - Except as fully disclosed
                  on Schedule "F" hereto, the Company has no liabilities or
                  obligations, fixed or contingent, accrued or unaccrued that
                  are not fully and properly reflected, or adequately reserved
                  against, on the December 31, 1996 balance sheet of the Company
                  included in the Financial Statements, excepting only those
                  liabilities and obligations incurred by the Company in the
                  ordinary course of its business between the date of such
                  balance sheet and the Closing Date, none of which liabilities
                  is individually or are collectively material, incurred in
                  violation of this Agreement, or would require accrual and/or
                  disclosure under generally accepted accounting principles.

         (h)      Guaranties and Indemnities - Schedule "F" hereto contains a
                  true, complete and correct list of all contracts and
                  agreements pursuant to which the Company has guaranteed or
                  indemnified any debt, liability or obligation of any other
                  person or entity, including, without limitation, any Vendor
                  (including, without limitation, the execution of any document
                  obligating the Company with respect to any performance or
                  other bond), or pursuant to which the Company has pledged or
                  otherwise encumbered any of its assets. Except as disclosed in
                  Schedule "F" hereto, the Company is not indebted to any
                  Vendor, nor is any Vendor indebted to the Company in any
                  amount for any purpose. Except as disclosed in Schedule "F"
                  hereto, the Company has not agreed to give any guaranty of
                  indebtedness or other obligations of third parties or made any
                  other commitment by which the Company is, or is contingently,
                  responsible for such indebtedness or other obligation.

         (i)      Tax Matters - The Company has duly and timely filed all
                  federal, state, county and local income, franchise, capital,
                  sales or use, excise, fuel, escheatment, property or other tax
                  returns, reports or filings required by any law or regulation
                  to be filed by it and has duly paid all taxes, assessments and
                  reassessments, and all other taxes, duties, governmental
                  charges, penalties, interest and fines due and payable by it
                  on or before the date hereof.

                  The federal, state, county and local income tax returns of the
                  Company provided to Purchaser are accurate in all respects.

                  There are no actions, suits, proceedings, inquiries,
                  investigations or claims of any nature or kind whatsoever now
                  pending or, to the best knowledge of Vendors, after due
                  inquiry, threatened, against the Company with respect to any
                  such returns or reports, or any such taxes, or any matters
                  under discussion with any federal, state, county, local or
                  other authority relating to such taxes.

                  The Company has not received from any authority any
                  assessment, reassessment or notice of underpayment of any
                  taxes or other penalty or charges and no such notice is
                  reasonably to be expected.



                                       8
<PAGE>   9
                  There is no misrepresentation that is attributable to wilful
                  default or fraud in tax returns of the Company previously
                  filed.

                  No consents extending or waiving the time limited for
                  reassessment of any taxes, duties, governmental charges,
                  penalties, interest or fines, or any statutes of limitations
                  related thereto have been filed with respect to the Company
                  for any fiscal year.

                  The Company has withheld from each payment made to any of its
                  officers, directors, former directors, and employees and
                  former employees the amount of all taxes and other deductions
                  (including without limitation, income taxes, unemployment,
                  disability, and other required taxes and contributions)
                  required to be withheld and has paid the same together with
                  the employer's share of same, if any (to the extent required
                  to be paid so no such amount is past due), to the proper tax
                  or other receiving officers within the prescribed times and
                  has filed, in complete and accurate form, all information and
                  other returns required pursuant to any applicable legislation
                  within the prescribed times.

                  The provision made for current and deferred taxes included in
                  the Financial Statements is sufficient for the payment of all
                  accrued and unpaid federal, state, county and local income,
                  franchise, capital, sales or use, excise, fuel, escheatment,
                  property or other taxes, assessments and reassessments,
                  duties, governmental charges, penalties, interest and fines
                  of, and payable by, the Company, whether or not disputed, for
                  the period ended the date thereof and for all periods prior
                  thereto.

         (j)      Absence of Changes - Except as disclosed on Schedule "G"
                  hereto, since December 31, 1996 there has not been:

                  (i)      any change in the condition or operations of the
                           business, assets, financial condition, or otherwise
                           of the Company other than changes in the ordinary and
                           normal course of business, none of which has been
                           materially adverse; or

                  (ii)     any damage, destruction or loss, labor trouble or
                           other event, development or condition of any
                           character (whether or not covered by insurance)
                           materially and adversely affecting the business,
                           financial condition, assets, properties or business
                           prospects of the Company.

         (k)      Absence of Unusual Transactions - Except as disclosed on
                  Schedule "H", the Company has not, other than with respect to
                  affiliated entities of the Company being acquired by the
                  Purchaser on the Closing Date, since December 31, 1996:

                  (i)      transferred, assigned, sold or otherwise disposed of
                           any assets, granted a lien, security interest,
                           mortgage or other encumbrance in any assets,



                                       9
<PAGE>   10
                           or cancelled any debts or claims except only in each
                           case in the ordinary and usual course of business or
                           to the extent such assets, liens, security interests,
                           mortgages, encumbrances, debts or claims do not
                           individually or in the aggregate exceed $20,000 (when
                           added to any dispositions, grants, or cancellations
                           by the other Southwest Companies);

                  (ii)     incurred or assumed any obligation or liability which
                           individually or in the aggregate exceeds $100,000
                           (fixed or contingent), except those listed in
                           Schedule "F" hereto and except unsecured current
                           obligations and liabilities incurred in the ordinary
                           and normal course of business which individually or
                           in the aggregate do not exceed $100,000;

                  (iii)    discharged or satisfied any lien or encumbrance, or
                           paid any obligation or liability (fixed or
                           contingent) other than liabilities included in the
                           Financial Statements and liabilities incurred since
                           the date thereof in the ordinary and normal course of
                           business;

                  (iv)     declared or made any payment of any dividend or other
                           distribution in respect of any shares of its stock as
                           applicable, or purchased or redeemed any such shares
                           thereof, or effected any subdivision, consolidation
                           or reclassification of any such shares;

                  (v)      suffered or been threatened with any material adverse
                           change in its business or financial condition,
                           business activities, or business prospects,
                           including, without limiting the generality of the
                           foregoing, the existence or threat of any labor
                           dispute, or any material adverse change in, or loss
                           of, any material relationship between the Company and
                           any of its customers, suppliers or key employees, or
                           entered into any commitment or transaction not in the
                           ordinary and usual course of business where such
                           commitment or transaction is or would be material in
                           relation to the Company;

                  (vi)     made any general wage or salary increases in respect
                           of personnel which it employs, other than increases
                           in the ordinary and normal course of business, nor
                           hired any employee who shall have an annual salary in
                           excess of $70,000; or

                  (vii)    authorized or agreed or otherwise become committed to
                           do any of the foregoing.

         (l)      Title to Properties - Except as disclosed in Schedules "I" and
                  "J" hereto, the Company has good and marketable title to all
                  its respective properties, interests in properties and assets,
                  real and personal, including without limitation those
                  reflected in the Financial Statements or acquired since the
                  date of the Financial





                                       10
<PAGE>   11
                  Statements, free and clear of all mortgages, pledges, liens,
                  claims, rights, encumbrances or charges of any kind or nature.

         (m)      Equipment and Condition of Assets - All non-vehicular
                  equipment, assets, personal property and fixtures in the
                  possession or custody of the Company which, as of the date
                  hereof, are owned, leased or held under license or similar
                  arrangement by the Company and are necessary for the conduct
                  of the Business are in good condition, repair and proper
                  working order, reasonable wear and tear excepted. Copies of
                  all leases, licenses, agreements and other documentation
                  relating thereto have been provided or made available to
                  Purchaser.

         (n)      Leases of Real Property - The Company is not a party to or
                  bound by any leases of real property other than those
                  disclosed in Schedule "J" hereto, and all interests held by
                  the Company as lessee under such leases are free and clear of
                  any and all liens, charges and encumbrances of any nature and
                  kind whatsoever. All rental and other payments required to be
                  paid by the Company, as lessee, pursuant to such leases have
                  been duly paid. Such leases are in full force and effect
                  without amendment thereto and the Company is not otherwise in
                  default in any material respect in meeting its obligations
                  contained in any such lease. The representations or warranties
                  set forth in Appendix "J" hereto with respect to any real
                  property owned by NRM Properties, Inc. or Chaparral
                  Properties, Inc. that is subject to a lease to which the
                  Company is a party or by which it is bound are true and
                  correct.

         (o)      Real Property - The Company does not own any interest in real
                  property, except as disclosed on Schedule "J" hereto.

         (p)      Vehicular Equipment - Schedule "K" contains a list of all
                  vehicular equipment owned or leased by the Company and copies
                  of all motor vehicle certificates of title with respect to
                  such vehicular equipment have been provided to the Purchaser.
                  Such vehicular equipment is, in all material respects, in good
                  condition, repair and proper working order, reasonable wear
                  and tear excepted, and each vehicle complies in all material
                  respects with all laws and regulations affecting its operation
                  and each vehicle bears a current safety standards certificate.

         (q)      Revenue Contracts - Except as disclosed in Schedule "L", the
                  Company is not a party to any contract pursuant to which it is
                  to provide transportation or other services. Each of the
                  contracts set out in Schedule "L" is in full force and effect
                  and enforceable in accordance with its respective terms and
                  conditions, and there is not existing any default, or event or
                  condition which, with the giving of notice or the passage of
                  time, or both, would constitute an event of default, by the
                  Company or any other party thereto under any of such
                  contracts, that could have a material adverse effect on any of
                  such contracts.



                                       11
<PAGE>   12
         (r)      Contracts to Purchase - Except as set out in Schedule "M", the
                  Company is not a party to any contract to purchase any goods
                  and/or services with a value in excess of $20,000/year. Each
                  of the contracts set out in Schedule "M" is in full force and
                  effect and enforceable in accordance with its respective terms
                  and conditions, and there is not existing any default, or
                  event or condition which, with the giving of notice or the
                  passage of time, or both, would constitute an event of
                  default, by the Company or any other party thereto under any
                  of such contracts, that could have a material adverse effect
                  on any of such contracts.

         (s)      Employment Contracts - Except as set out in Schedule "N", the
                  Company neither has any written employment contracts, union or
                  collective labor, pension, deferred profit sharing,
                  retirement, employee benefit, stock option or other similar
                  agreements or plans nor has it had any such plan or agreement
                  in the past, nor does it have any written contracts of
                  employment with any employees or, to the best of Vendors'
                  knowledge, any oral contracts of employment which are not
                  terminable on the giving of reasonable notice in accordance
                  with applicable law. The Company has not, in the last four (4)
                  years, experienced any labor disputes which were of a material
                  nature, work stoppages or strikes. There is not now any
                  circumstances or conduct which could result in the filing of
                  an unfair labor practice complaint against the Company; any
                  such complaints previously raised and currently ongoing and
                  the current status thereof are particularized in Schedule "N".

         (t)      Material Contracts - Except for the material contracts and
                  commitments disclosed herein, including the Schedules attached
                  hereto, the Company is not a party to or bound by any material
                  contract or commitments whether oral or written. True, correct
                  and complete copies of all such written contracts and
                  commitments either have been delivered to the Purchaser or
                  will be delivered prior to Closing. Each of such contracts and
                  commitments is in full force and effect and enforceable in
                  accordance with its respective terms and conditions, and there
                  is not existing any default, or event or condition which, with
                  the giving of notice or the passage of time, or both, would
                  constitute an event of default, by either of the Company or
                  any other party thereto under any of such contracts or
                  commitments, that could have a material adverse effect on any
                  of such contracts or commitments. The Company has the
                  capacity, including the necessary personnel, equipment and
                  supplies, to perform all its obligations thereunder in all
                  material respects.

         (u)      Pension/Benefit/Health Plans - The only pension, benefit or
                  health plans established by or for the Company for its
                  employees are those disclosed in Schedule "N" hereto; such
                  plans are duly registered where required by, and are in good
                  standing under all, applicable legislation; all required
                  employer contributions thereunder to the date hereof have been
                  made and the respective pension funds are funded in accordance
                  with the rules of the pension plans and no past service
                  funding liabilities exist thereunder. Except as disclosed on



                                       12
<PAGE>   13
                  Schedule "N" hereto, there is no employee benefit or health
                  plan established or maintained for employees of the Company,
                  or to which contributions have been made by the Company with
                  respect to such employees, which is subject to Title IV of the
                  Employee Retirement Income Security Act of 1974, as amended
                  ("ERISA"). The Company is in compliance in all material
                  respects with all provisions of ERISA, and the Company is not
                  subject to any liability or obligation arising under ERISA or
                  any other applicable law or the provisions of any other
                  employee benefit plan, including but not limited to liability
                  owed to the Pension Benefit Guaranty Corporation on account of
                  a termination or partial termination of any employee benefit
                  plan, any liability resulting from a "prohibited transaction",
                  any liability for failure to meet minimum funding
                  requirements, any liability related to the termination of a
                  multi-employer pension plan, and any liability caused by the
                  non-qualification of any plan under section 401 of the Code.
                  No pension plan, no employee benefit plan, no "disqualified
                  person" (as such term is used in Section 4975(c)(1) of the
                  Code) has engaged, and no Vendor has engaged, in any
                  transaction in violation of Section 406 of ERISA or any
                  "prohibited transaction" (as defined in Section 4975(c)(1) of
                  the Code) other than any such transaction which is exempt
                  under Section 408 of ERISA or Section 4975(d) of the Code. The
                  401k plan of the Company meets in all material respects the
                  requirements of section 401(a) of the Code. The Company does
                  not have any obligation to provide material post-retirement
                  benefits of any nature to its employees, former employees or
                  their survivors, dependents or beneficiaries, except as may be
                  required by the Consolidated Omnibus Budget Reconciliation Act
                  of 1986 ("COBRA") or any other applicable state medical
                  benefits continuation laws, nor will any such obligation to
                  provide such post-retirement benefits be incurred solely as a
                  result of the consummation of the within transactions. The
                  Company has not caused there to occur a "mass lay-off", as
                  defined in section 693.3 of the regulations issued under the
                  Worker Adjustment and Retention Notification Act (20 CFR 639)
                  at any time in the past.

         (v)      Absence of Conflicting Agreements - Neither the Company nor
                  any Vendor is a party to, bound or affected by or subject to
                  any indenture, mortgage, lease, agreement, instrument, charter
                  or by-law provision, or, to the best of Vendors' knowledge,
                  any statute, regulation, order, judgment, decree or law which
                  would be in any material respect violated, contravened,
                  breached by or under which a material default would occur, as
                  a result of the execution and delivery of this Agreement or
                  the consummation of any of the transactions provided for
                  herein.

         (w)      Litigation - Except for the items disclosed in Schedule "O"
                  hereto, all of which are fully insured against, there is no
                  suit, action, litigation, arbitration proceeding or private or
                  governmental proceeding, hearing before an administrative
                  tribunal, including appeals and applications for review, in
                  progress, pending or to the knowledge of Vendors threatened
                  against the Company or materially and adversely affecting its
                  properties, business, financial condition or business





                                       13
<PAGE>   14
                  prospects. Except as shown in Schedule "O", there is not
                  presently outstanding against the Company any adverse
                  judgment, decree, injunction, rule or order of any court,
                  governmental department, commission, agency, instrumentality
                  or arbitrator.

         (x)      Employees - There are set forth in Schedule "P" hereto the
                  names and titles of all personnel employed or engaged by the
                  Company whose annual base salary exceeds $40,000, including
                  rates of remuneration, positions held and date of commencement
                  of employment. The employment records of the Company are true,
                  complete and correct in all material respects. Except as
                  disclosed in Schedule "P" hereto, the Company does not owe any
                  past or present employee any sum other than for accrued wages
                  or salaries for the current payroll period, reimbursable
                  expenses, accrued vacation and holiday pay (none of which is
                  for a period in excess of two (2) weeks' pay with respect to
                  any single employee), sick leave rights and amounts payable
                  under employee benefit plans, and all of such sums that accrue
                  from the date hereof until the Closing shall be timely paid by
                  the Company on or prior to the Closing Date. There is not
                  pending or, to the best knowledge of Vendors, after due
                  inquiry, threatened, any charge or complaint against or
                  involving the Company or any of its officers or employees by
                  the National Labor Relations Board, the Occupational Health &
                  Safety Administration, the Department of Labor, or any similar
                  federal, state or local board of agency, or any representative
                  thereof.

         (y)      Insurance - The Company currently has in force the policies of
                  insurance set out in Schedule "Q" hereto. Such policies are
                  appropriate to its Business, property and assets, are in such
                  amounts and against such risks as are customarily carried and
                  insured against by owners of comparable businesses, properties
                  and assets, and, to the knowledge of Vendors, are issued by
                  responsible insurers. All such policies of insurance are in
                  full force and effect and the Company is not in default,
                  whether as to the payment of premium or otherwise, under the
                  terms of any such policy. Such policies can be cancelled
                  without penalty or premium, and such cancellation would
                  trigger a full pro rata refund of prepaid premiums. The
                  Company has no liability for retrospective insurance premiums
                  or costs.

         (z)      Intellectual Property - Attached as Schedule "R" is a true and
                  correct schedule identifying all material patents, patent
                  rights or licenses, patent applications, trademarks, trademark
                  registrations and applications, trademark rights, trade names,
                  trade secrets, service marks and applications therefore,
                  copyrights and copyright registrations and copyright
                  applications used in whole or in part in or required for the
                  proper carrying on of the Business of the Company (the
                  "Intellectual Property"). None of the matters covered by the
                  Intellectual Property, nor any of the products or services
                  sold or provided by the Company, nor any of the processes used
                  or the business practices followed by the Company, infringes
                  or has infringed upon any trademark, trade name, fictitious
                  name,



                                       14
<PAGE>   15
                  service mark, trade secrets, patent or copyright owned by any
                  person or entity (or any application with respect thereto), or
                  constitutes unfair competition. The Company is not obligated
                  to pay any royalty or other payment with respect to any of the
                  Intellectual Property, except as disclosed in Schedule "R".
                  Except as disclosed in Schedule "R" hereto, to the best of
                  Vendors' knowledge, no person or entity is producing,
                  providing, selling or using products, services, names, or
                  marks that would constitute an infringement of any of the
                  Intellectual Property.

         (aa)     Corporate Records - The corporate records and minute books of
                  the Company have been delivered to the Purchaser and contain
                  complete and accurate copies of the Company's Articles of
                  Incorporation, as amended, by-laws, minutes of all meetings,
                  and resolutions of its directors and shareholders. All such
                  meetings were duly called and held, all such by-laws and
                  resolutions were duly passed and the share certificate books,
                  registers of shareholders and members, registers of transfers
                  and registers of directors of the Company are complete and
                  accurate in all material respects. In all material respects,
                  the books and records of the Company with respect to its
                  assets, businesses, operations, properties and prospects have
                  been maintained in accordance with generally accepted
                  accounting principles and in the usual, regular and ordinary
                  manner, and all entries with respect thereto have been made
                  and all transactions have been properly accounted for. All
                  applicable corporate and other laws and all applicable
                  generally accepted accounting principles relating to the
                  maintenance of such books and records have been complied with
                  by the Company.

         (bb)     Third Party Approvals - Except for approvals required by the
                  Federal Trade Commission or other agencies for purposes of
                  complying with the Hart-Scott-Rodino Antitrust Improvements
                  Act of 1976, as amended, and the rules and regulations
                  promulgated thereunder (the "Hart Act") and required by the
                  Arizona Department of Health Services, and except as disclosed
                  in Schedule "S", there are no approvals, consents or waivers
                  required to be obtained or applications required to be filed
                  from or with governmental authorities or from any other Person
                  whatsoever, including pursuant to any leases or contracts
                  containing prohibitions or pre-consent provisions pertinent to
                  this Agreement in order to permit the transactions
                  contemplated herein or to preserve the Business and/or assets
                  of the Company.

         (cc)     Compliance with Environmental Laws - Except as disclosed in
                  Schedule "T" hereto, the Company and the Business are in all
                  material respects in compliance with all, and do not violate
                  in any material respect, and have not violated in any material
                  respect any, applicable federal, state, municipal or local
                  laws, regulations, orders, certificates of approval, licenses,
                  permits, governmental decrees, ordinances or any and all other
                  applicable legislation or regulatory requirements with respect
                  to environmental, health or safety matters. There has been no
                  storage, treatment, generation, discharge, transportation or
                  disposal of



                                       15
<PAGE>   16
                  industrial, toxic or hazardous substances or solid or
                  hazardous waste by, or on behalf of, the Company, in violation
                  of any federal, state or local law, statute, rule or
                  regulation or any decree, order, arbitration award or
                  agreement with or any license or permit from any federal,
                  state or local governmental authority. There has been no
                  spill, discharge, leak, emission, injection, escape, dumping,
                  or release of any kind by, or on behalf of, the Company, into
                  the environment (including, without limitation, into air,
                  water or ground water) of any materials including, without
                  limitation, industrial, toxic or hazardous substances or
                  solid, medical or hazardous waste, as defined under any
                  federal, state or local law, statute, rule or regulation other
                  than those releases permissible under such law, statute, rule
                  or regulation or allowable under applicable permits.

         (dd)     Compliance - The Company is not in violation in any material
                  respect of any laws, regulations, decrees or ordinances
                  applicable to the Business, assets, properties, financial
                  condition or business prospects of the Company.

         (ee)     Subsidiaries and Affiliates - Except as disclosed in Schedule
                  "U" hereto, the Company has no subsidiaries or any other
                  equity investment in any entity engaged in any aspect of the
                  medical or transportation industry. Except as disclosed in
                  Schedule "U" hereto, no Vendor has any equity interest in any
                  "Affiliates." For purposes of this Agreement, the term
                  "Affiliates" shall mean all entities engaged in any aspect of
                  the medical or transportation industry in which the applicable
                  Vendor is either an officer or director, or in which the
                  applicable Vendor, directly or indirectly, owns or controls
                  ten percent (10%) or more of the equity securities of the
                  entity.

         (ff)     Accounts Receivable - The accounts receivable existing on the
                  books of the Southwest Companies at the Closing Time (net of
                  contractual allowance) (the "Closing Accounts Receivable")
                  shall be at least $6,040,000 (the "Minimum Accounts
                  Receivable") and an amount at least equal to the Minimum
                  Accounts Receivable or the Closing Accounts Receivable,
                  whichever amount is greater (the "Target Accounts
                  Receivable"), is good and collectible within 365 calendar days
                  thereafter. None of the Closing Accounts Receivable are
                  subject to the return of the merchandise or other property the
                  selling price of which is represented thereby, or to offsets
                  or counterclaims, the extent of which is in excess of any
                  reserves for collectibility thereof reflected in the books of
                  the Southwest Companies at the Closing.

         (gg)     Bank Accounts - Schedule "V" hereto sets forth the name and
                  location of each bank in which the Company has an account,
                  lock box or safe deposit box, the number of each such account
                  or box, the names of all signatories thereto and the persons
                  authorized to draw thereon or have access thereto. No power of
                  attorney exists from the Company.



                                       16
<PAGE>   17
         (hh)     Accuracy of Documents, Representations and Warranties - The
                  copies of all documents furnished to Purchaser, or any of its
                  representatives by or on behalf of any Vendor or the Company,
                  or any one or more of them, or their representatives, are
                  true, complete and correct in all material respects. No
                  representation or warranty of any Vendor contained in this
                  Agreement or the other agreements to be executed by any Vendor
                  pursuant hereto, and no statement contained in the exhibits,
                  the schedules or the other documents delivered by or on behalf
                  of any Vendor, or his or its representatives pursuant to or in
                  connection with this Agreement or the other agreements to be
                  executed by any Vendor pursuant hereto or any of the
                  transactions contemplated hereby or thereby, contains any
                  untrue statement of a material fact, or omits to state any
                  material fact required to be stated herein or therein in order
                  to make the statements contained herein or therein not
                  misleading.

3.2 REPRESENTATIONS AND WARRANTIES OF THE PURCHASER - To induce the Vendors to
enter into this Agreement and to perform Vendors' obligations hereunder, and
with full knowledge that Vendors will rely thereon, the Purchaser hereby
represents and warrants to the Vendors the truth, accuracy and completeness of
the following, except as disclosed in Schedule "W" hereto:

         (a)      Organization and Valid Existence - The Purchaser is a
                  corporation duly incorporated and organized, validly existing
                  and in good standing under the laws of the State of Delaware
                  and has all necessary corporate power, authority and capacity
                  to execute and deliver the Agreement and the other agreements
                  referenced herein to which the Purchaser is a party, to
                  consummate the transactions contemplated hereby and thereby,
                  and to fully and timely perform its obligations hereunder and
                  thereunder. The execution and delivery by Purchaser of this
                  Agreement and the other agreements referenced herein to which
                  Purchaser is a party, and the consummation of the transactions
                  contemplated hereby and thereby, have been duly authorized and
                  approved by Purchaser's board of directors, and no other
                  corporate proceedings on the part of Purchaser are required to
                  authorize the execution and delivery of this Agreement, the
                  other agreements referenced herein to which Purchaser is a
                  party, or the consummation of the transactions contemplated
                  hereby or thereby.

         (b)      Enforceability - This Agreement and the other agreements
                  referenced herein to which Purchaser is a party have been duly
                  executed and delivered by Purchaser and constitute legal,
                  valid and binding obligations of Purchaser, enforceable
                  against Purchaser in accordance with their respective terms.

         (c)      Absence of Conflicting Agreements - The Purchaser is not a
                  party to, bound or affected by or subject to any indenture,
                  mortgage, lease, agreement, instrument, charter or by-law
                  provision, statute, regulation, order, judgment, decree or law
                  which would be violated, contravened or breached by, or under
                  which any default



                                       17
<PAGE>   18
                  would occur, as a result of the execution and delivery of this
                  Agreement or the consummation of any of the transactions
                  provided for herein.

         (d)      Litigation - There is no suit, action, litigation, arbitration
                  proceeding or governmental proceeding, including appeals and
                  applications for review, in progress, pending or, to the best
                  of the knowledge, information and belief (after due inquiry)
                  of the senior officers of the Purchaser, threatened against or
                  involving the Purchaser or any judgment, decree, injunction,
                  rule or order of any court, governmental department,
                  commission, agency, instrumentality or arbitrator which, in
                  any such case, would materially and adversely affect the
                  ability of the Purchaser to enter into this Agreement or to
                  consummate the transactions contemplated hereby.

         (e)      Third Party Approvals - Except for approvals required by the
                  Federal Trade Commission or other agencies for purposes of
                  complying with the Hart Act and those required by the Arizona
                  Department of Health Services, and except as disclosed in
                  Schedule "W", there are no approvals, consents or waivers
                  required to be obtained or applications required to be filed
                  from or with governmental authorities or from any other Person
                  whatsoever, including pursuant to any leases or contracts
                  containing prohibitions or pre-consent provisions pertinent to
                  this Agreement, in order to permit the transactions
                  contemplated herein.

         (f)      Accuracy of Documents, Representations and Warranties - The
                  copies of all documents furnished to the Vendors and their
                  representatives by or on behalf of Purchaser and its
                  representatives are true, complete and correct in all material
                  respects. No representation or warranty of Purchaser contained
                  in this Agreement or the other agreements referenced herein to
                  which Purchaser is a party, and no statement contained in the
                  exhibits, the schedules or the other documents delivered by or
                  on behalf of Purchaser or its representatives pursuant to or
                  in connection with this Agreement or any of the transactions
                  contemplated hereby contains any untrue statement of a
                  material fact, or omits to state any material fact required to
                  be stated herein or therein in order to make the statements
                  contained herein or therein not misleading.

3.3 NO BROKER - Each of the Parties represents and warrants to the others that
all negotiations relating to this Agreement and the transactions contemplated
hereby have been carried on between them directly and without the intervention
of any other party in such manner as to give rise to any valid claims against
any of the Parties for a brokerage commission, finder's fee or other like
payment.

3.4 NON-WAIVER - No investigations made by or on behalf of a Party at any time
shall have the effect of waiving, diminishing the scope of or otherwise
affecting any representation or warranty made by the other Party herein or
pursuant hereto.



                                       18
<PAGE>   19
3.5 NATURE OF REPRESENTATIONS, WARRANTIES AND COVENANTS - All statements
contained in any certificate or other instrument delivered by or on behalf of a
Party pursuant to or in connection with the transactions contemplated by this
Agreement shall be deemed to be made by such Party hereunder.

                                    ARTICLE 4

                     CONDITIONS PRECEDENT TO THE PERFORMANCE
                       BY THE PURCHASER AND THE VENDORS OF
                     THEIR OBLIGATIONS UNDER THIS AGREEMENT

4.1 PURCHASER'S CONDITIONS - The obligation of the Purchaser to complete the
purchase of the Purchased Shares hereunder shall be subject to the satisfaction
of, or compliance with, in all material respects, at or before the Closing Time,
each of the following conditions precedent (each of which is hereby acknowledged
to be inserted for the exclusive benefit of the Purchaser and may be waived by
it in whole or in part):

         (a)      Truth and Accuracy of Representations of Vendors at the
                  Closing Time - All of the representations and warranties of
                  Vendors made in or pursuant to this Agreement shall be true
                  and correct in all material respects as at the Closing Time
                  and with the same effect as if made at and as of the Closing
                  Time (except as such representations and warranties may be
                  affected by the occurrence of events or transactions expressly
                  contemplated and permitted hereby), and the Purchaser shall
                  have received a certificate from each of the Vendors
                  confirming the truth and correctness in all material respects
                  of their representations and warranties contained herein;

         (b)      Performance of Obligations - The Vendors shall have performed
                  or complied with all of their obligations, covenants and
                  agreements hereunder;

         (c)      Receipt of Closing Documentation - All documentation relating
                  to the due authorization and completion of the sale and
                  purchase hereunder of the Purchased Shares and all actions and
                  proceedings taken on or prior to the Closing in connection
                  with the performance by the Vendors of their obligations under
                  this Agreement shall be reasonably satisfactory to the
                  Purchaser and the Purchaser shall have received copies of all
                  such documentation or other evidence as it may reasonably
                  request in order to establish the consummation of the
                  transactions contemplated hereby and the taking of all
                  corporate proceedings in connection therewith in compliance
                  with these conditions, in form (as to certification and
                  otherwise) and substance reasonably satisfactory to the
                  Purchaser;

         (d)      Consents, Authorizations and Registrations - All consents,
                  approvals, orders and authorizations of any Persons or
                  governmental authorities (or registrations, declarations,
                  filings or recordings with any such authorities) required in



                                       19
<PAGE>   20
                  connection with the completion of any of the transactions
                  contemplated by this Agreement (including, without limitation,
                  any notifications, approvals or consents required by the
                  Arizona Department of Health Services) shall have been
                  obtained on or before the Closing Time; the Vendors shall have
                  obtained and delivered by Closing to the Purchaser written
                  consents, in form and substance satisfactory to the Purchaser,
                  to the transaction contemplated herein which are required (if
                  any) pursuant to the real property leases referred to in
                  Schedule "J" (and any customer contracts where approval or
                  consent is required), including, without limiting the
                  generality of the foregoing, such acknowledgements and
                  confirmations of good standing from the lessors in respect of
                  the real property leases referred to in Schedule "J" hereto as
                  may be reasonably requested by the Purchaser;

         (e)      Directors and Officers of Company - Subject to the terms of
                  the Employment Agreement, there shall have been delivered to
                  the Purchaser on or before the Closing Date the resignations
                  of such persons as the Purchaser shall direct who are
                  presently directors and/or officers of the Company.

         (f)      No Damage - No substantial damage by fire or other hazard to
                  the assets of the Company shall have occurred from the date
                  hereof to the Closing Date which is not fully and adequately
                  insured against;

         (g)      Litigation - On the Closing Date, there shall be no
                  litigation, governmental investigation or proceeding pending
                  or threatened for the purpose of enjoining or preventing the
                  consummation of any of the transactions contemplated by this
                  Agreement or otherwise claiming that such consummation is
                  improper;

         (h)      Hart-Scott-Rodino Filing - The applicable waiting period under
                  the Hart Act shall have expired or terminated.

         (i)      Management - Rural/Metro's Board of Directors shall have
                  confirmed the appointment of Ramsey to the Board of Directors
                  of Rural/Metro and to a senior executive position with
                  Rural/Metro.

         (j)      Environmental Reports - Purchaser shall have received reports,
                  in form and content satisfactory to Purchaser, in the exercise
                  of its sole discretion, from independent environmental
                  consultants acceptable to Purchaser in its sole discretion,
                  and from legal counsel to Purchaser, concerning the real
                  properties owned or leased by the Company, which reports shall
                  be based, in part, on the results of environmental site
                  assessments which Purchaser may cause to be completed for and
                  on behalf of Purchaser prior to the Closing Date on all such
                  real or leased properties, which reports, if any, shall be
                  prepared at Purchaser's expense.



                                       20
<PAGE>   21
         (k)      Due Diligence - Purchaser shall, in the exercise of its sole
                  discretion, be entirely satisfied with the business,
                  operations, financial condition, assets and liabilities of the
                  Company.

         (l)      Schedules - Purchaser shall have received from Vendors the
                  Schedules referred to herein and all amendments and
                  modifications thereto, and Purchaser shall, in the exercise of
                  its sole discretion, be entirely satisfied with the nature and
                  extent of the disclosures made therein and the representations
                  and warranties of Vendors as modified by the disclosures
                  contained in the Schedules.

         (m)      Simultaneous Closings - On the Closing Date, the share
                  purchases and other transactions contemplated in each of the
                  Agreements of Purchase and Sale executed of even date herewith
                  for the sale of Southwest Ambulance of Casa Grande, Inc., SW
                  General, Inc., and Southwest General Services, Inc. shall be
                  consummated simultaneously with the transactions contemplated
                  herein.

4.2 VENDORS' CONDITIONS - The obligations of the Vendors to complete the sale of
the Purchased Shares hereunder shall be subject to the satisfaction of or
compliance with, at or before the Closing Time, each of the following conditions
precedent (each of which is hereby acknowledged to be inserted for the exclusive
benefit of the Vendors and may be waived by them in whole or in part):

         (a)      Truth and Accuracy of Representations of Purchaser at Closing
                  Time - All of the representations and warranties of the
                  Purchaser made in or pursuant to this Agreement shall be true
                  and correct in all material respects as at the Closing Time
                  and with the same effect as if made at and as of the Closing
                  Time and the Vendors shall have received a certificate from a
                  duly authorized senior officer of the Purchaser confirming the
                  truth and correctness in all material respects of the
                  representations and warranties of the Purchaser contained
                  herein;

         (b)      Performance of Obligations - The Purchaser shall have
                  performed or complied with all of its obligations, covenants
                  and agreements hereunder;

         (c)      Receipt of Closing Documentation - All documentation relating
                  to the due authorization and completion of the sale and
                  purchase hereunder of the Purchased Shares and all actions and
                  proceedings taken on or prior to the Closing in connection
                  with the performance by the Purchaser of its obligations under
                  this Agreement shall be reasonably satisfactory to the Vendors
                  and the Vendors shall have received copies of all such
                  documentation or other evidence as they may reasonably request
                  in order to establish the consummation of the transactions
                  contemplated hereby and the taking of all corporate
                  proceedings in connection therewith in compliance with these
                  conditions, in form (as to certification and otherwise) and
                  substance satisfactory to the Vendors;



                                       21
<PAGE>   22
         (d)      Release of Vendors' Guaranties - Purchaser shall have secured
                  the release of Vendors from liability for any personal
                  guarantees issued by Vendors as the shareholders of the
                  Company with respect to any liability of the Company for
                  borrowed money, and shall have provided to Vendors written
                  evidence thereof, or, in the alternative, Purchaser shall
                  deliver an agreement of assumption and indemnification, in
                  form and content mutually satisfactory to Purchaser and
                  Vendors, pursuant to which Purchaser will indemnify Vendors
                  for any such personal guaranty;

         (e)      Litigation - On the Closing Date, there shall be no
                  litigation, governmental investigation or proceeding pending
                  or threatened for the purpose of enjoining or preventing the
                  consummation of any of the transactions contemplated by this
                  Agreement or otherwise claiming that such consummation is
                  improper;

         (f)      Hart-Scott-Rodino Filing - The applicable waiting period under
                  the Hart Act shall have expired or terminated;

         (g)      Management - The Board of Directors of Rural/Metro shall have
                  confirmed the appointment of Ramsey to the Board of Directors
                  of Rural/Metro and to a senior executive position with
                  Rural/Metro and approved certain existing management contracts
                  of the Company;

         (h)      Simultaneous Closings - On the Closing Date, the share
                  purchases and other transactions contemplated in each of the
                  Agreements of Purchase and Sale executed of even date herewith
                  for the sale of Southwest Ambulance of Casa Grande, Inc., SW
                  General, Inc., and Southwest General Services, Inc. shall be
                  consummated simultaneously with the transactions contemplated
                  herein.

                                    ARTICLE 5

                         OTHER COVENANTS OF THE PARTIES

5.1 CONDUCT OF BUSINESS PRIOR TO CLOSING - During the period from the date of
this Agreement to the Closing Time, the Vendors will have the following
obligations and will cause the Company to do the following:

         (a)      Access to Records - Vendors shall, and shall cause the Company
                  and its employees, officers, agents, representatives and
                  accountants to, fully cooperate with Purchaser to allow the
                  officers, employees, attorneys, consultants and accountants of
                  Purchaser free and unrestricted access (but only through Barry
                  Landon, as representative of the Vendors and without
                  interference to the ordinary conduct of the Business) during
                  normal business hours to all of the properties, books,
                  contracts, documents and records of the Company and furnish to



                                       22
<PAGE>   23
                  Purchaser such information as Purchaser may at any time and
                  from time to time reasonably request until the Closing Time.

         (b)      Business in Ordinary Course - Vendors shall cause the Company
                  to carry on its business and affairs as heretofore carried on,
                  and neither the Company nor any Vendor will order, purchase or
                  lease any products, inventory, equipment, leased personalty,
                  or other items, or dispose of any of its assets or leased
                  property, or issue any quotations, or prepay any of its
                  material obligations, incur any liabilities or obligations,
                  hire or discharge any employee or officer or, without
                  limitation by specific enumeration of the foregoing, enter
                  into any other transaction, except in the usual and ordinary
                  course of its business in accordance with the past practices
                  of the Company and except as provided herein. Without limiting
                  the generality of the foregoing, Vendors shall not permit the
                  Company, without the prior written consent of Purchaser, to:

                  (i)      create or suffer to exist any liens or encumbrances
                           with respect to any of the assets or properties of
                           the Company which shall not be discharged at or prior
                           to the Closing Date, other than liens for
                           nondelinquent taxes;

                  (ii)     incur any indebtedness for borrowed money other than
                           in the usual and ordinary course of its business;

                  (iii)    sell or transfer any material assets or properties
                           (including, without limitation, sales and transfers
                           to Affiliates, other than Affiliates of the Company
                           the stock of which is to be acquired by Purchaser or
                           an Affiliate of Purchaser on the Closing Date);

                  (iv)     acquire or enter into any agreement or understanding
                           (oral or written) to acquire the stock or assets of
                           any other person, firm, corporation or other entity;

                  (v)      make any material change in the conduct or nature of
                           any aspect of its business, whether in the ordinary
                           course of business or not, or whether or not the
                           change has or will have a material adverse affect on
                           the business activities, financial condition, or
                           business prospects of the Company;

                  (vi)     waive any material rights;

                  (vii)    pay any Affiliate, other than Affiliates of the
                           Company the stock of which is to be acquired by
                           Purchaser or an Affiliate of Purchaser on the Closing
                           Date, or be charged by any Affiliate, other than
                           Affiliates of the Company the stock of which is to be
                           acquired by Purchaser or an Affiliate of Purchaser on
                           the Closing Date, for goods sold or services



                                       23
<PAGE>   24
                           rendered or be charged by any Affiliate, other than
                           Affiliates of the Company the stock of which is to be
                           acquired by Purchaser or an Affiliate of Purchaser on
                           the Closing Date, for corporate overhead expenses,
                           management fees, legal or accounting fees, capital
                           charges, or similar charges or expenses, except for
                           any payments made by the Company pursuant to leases
                           with NRM Properties, Inc. or Chaparral Properties,
                           Inc.;

                  (viii)   incur or commit to incur any individual capital
                           expenditures except in the ordinary course of its
                           business;

                  (ix)     amend employment contracts or the terms and
                           conditions of employment of any officer, director or
                           employee earning total annual compensation in excess
                           of $70,000, other than normal merit and cost of
                           living increases to employees in accordance with the
                           general prevailing practices of the Company existing
                           prior to the date of this Agreement;

                  (x)      pay or incur any management or consulting fees;

                  (xi)     hire any employee who shall have an annual salary in
                           excess of $70,000;

                  (xii)    enter into any transaction other than in the usual
                           and ordinary course of business; or

                  (xiii)   issue or sell any shares of the stock or other
                           securities of the Company, including any of the
                           Purchased Shares, or make or become obligated to make
                           any dividend or other distribution or payment to
                           Vendors or any former shareholder of the Company in
                           respect of any stock or other security of the Company
                           at any time held by Vendor or such other former
                           shareholders.

         (c)      Employees - Vendors shall use their reasonable efforts to
                  retain, and shall cause the Company to each retain its
                  business intact, preserve all its goodwill and customer and
                  employee relations, including keeping available the services
                  of each of its present employees, representatives and agents.

         (d)      Continue Insurance - Vendors shall cause the Company to
                  continue in force all existing policies of insurance presently
                  maintained by the Company.

         (e)      Perform Obligations - Vendors shall cause the Company to
                  comply in all material respects with all laws affecting the
                  operation of the Business and to pay all required taxes and
                  tax installments.



                                       24
<PAGE>   25
         (f)      Confidentiality - Until the Closing, and at all times
                  thereafter as provided in Section 6.1(d) hereof, Vendors will
                  maintain as confidential their discussions with
                  Purchaser, and the terms and conditions of this Agreement, and
                  the other agreements to be executed in connection herewith,
                  and except as reasonably necessary to fulfill Vendors'
                  obligations hereunder or as required by law, will not make any
                  trade press or other announcement or disclosure in relation to
                  such discussions whether before or after Closing without the
                  prior written consent of Purchaser.

         (g)      Exclusivity - Until the earlier of the Closing or the
                  termination of this Agreement in accordance with the terms
                  hereof, Vendors will negotiate the sale of the stock, assets
                  and properties of the Company only with Purchaser, and no
                  Vendor will permit the Company to, directly or indirectly,
                  enter into any discussion with, or disclose any information in
                  relation to the Purchased Shares or the assets of the Company
                  to any other person, firm, or other entity, other than
                  Purchaser.

         (h)      Equitable Relief - Each Vendor acknowledges and agrees that
                  the covenants contained in each of paragraphs (f) and (g) of
                  this Section 5.1 are a material inducement for Purchaser to
                  execute and deliver this Agreement and to consummate the
                  transactions contemplated hereby. Accordingly, Vendor acknowl-
                  edges and agrees that the restrictions contained in each of
                  paragraphs (f) and (g) of this Section 5.1 are reasonable and
                  necessary for the protection of the business of Purchaser and
                  its subsidiaries, the Company, and the investment of Purchaser
                  in the Company, and that a breach of any such restriction
                  could not adequately be compensated by damages in an action at
                  law. In the event of a breach or threatened breach by any
                  Vendor of any of the provisions of any of paragraphs (f) or
                  (g) of this Section 5.1, Purchaser shall be entitled to
                  obtain, without the necessity of posting bond therefor, an
                  injunction (preliminary or permanent, or a temporary
                  restraining order) restraining such Vendor from the activity
                  or threatened activity constituting, or which would
                  constitute, a breach, as well as damages and an equitable
                  accounting of all earnings, profits and other benefits arising
                  from a violation, which right shall be cumulative and in
                  addition to any other rights or remedies to which Purchaser
                  may be entitled.

         (i)      Severability - Each and every provision set forth in each of
                  paragraphs (f) and (g) of this Section 5.1 is independent and
                  severable from the others, and no provision shall be rendered
                  unenforceable by virtue of the fact that, for any reason, any
                  other or others of them may be unenforceable in whole or in
                  part. The parties hereto agree that if any provision of
                  paragraphs (f) or (g) of this Section 5.1 shall be declared by
                  a court of competent jurisdiction to be unenforceable for any
                  reason whatsoever, the court may appropriately limit or modify
                  such provision, and such provision shall be given effect to
                  the maximum extent permitted by applicable law.



                                       25
<PAGE>   26
         (j)      Consents - Vendors shall use their reasonable efforts and make
                  every good faith attempt to obtain any and all consents and
                  estoppel letters reasonably requested by Purchaser to or in
                  connection with the assignment of, or alternate arrangements
                  satisfactory to Purchaser with respect to, any contract,
                  lease, license, permit, agreement, or other instrument, which
                  is to be an asset of the Company, or which may be necessary,
                  appropriate, or required in order to permit the conduct of the
                  Business and operations of the Company after the Closing to be
                  in all respects the same as the conduct of the Business and
                  operations of the Company, prior to the Closing.

5.2 OBLIGATIONS OF PURCHASER - During the period from the date of this Agreement
to the Closing Time, or such other period as provided by this Agreement, the
Purchaser will have the following obligations:

         (a)      Confidentiality - Purchaser will maintain as confidential its
                  discussions with Vendors, and the terms and conditions of this
                  Agreement, and the other agreements to be executed in
                  connection herewith, and except as reasonably necessary to
                  fulfill its obligations hereunder or as required by law, will
                  not make any trade press or other announcement or disclosure
                  in relation to such discussions without the prior written
                  consent of Vendors. In the event of the termination of this
                  Agreement without consummation of the transactions
                  contemplated hereby, Purchaser will keep confidential any
                  information (unless readily available from public or published
                  information sources) obtained from the Company or the Vendors.
                  If this Agreement is so terminated, promptly after such
                  termination, all documents, work papers and other written
                  material obtained from Vendors' representative in connection
                  with this Agreement and not theretofore made public (including
                  all copies thereof), shall be returned to the Person that
                  provided such material. Purchaser shall provide Vendors with a
                  list of representatives of Purchaser involved in the due
                  diligence, and said representatives shall refrain from
                  discussing the transaction and its due diligence activities
                  with any other employee or representative of Purchaser not
                  disclosed on the list.

         (b)      Nonsolicitation - In the event of termination of this
                  Agreement without consummation of the transactions
                  contemplated hereby, Purchaser agrees that for a period of
                  three (3) years following such termination, Purchaser will
                  not, directly or indirectly, solicit or cause others to
                  solicit any person who, on the date hereof, is an employee of
                  the Company and whose annual compensation from the Company
                  exceeds $25,000, for employment or as an independent
                  contractor with any person or entity, unless first authorized
                  in writing by Vendors, which authorization may be withheld in
                  the sole and absolute discretion of Vendors.

         (c)      Trade Secrets and Other Information - In the event of
                  termination of this Agreement without consummation of the
                  transactions contemplated hereby, Purchaser agrees that after
                  the Closing Purchaser will not communicate or divulge



                                       26
<PAGE>   27
                  to, or use for the benefit of, any person, firm or corporation
                  any of the trade secrets, methods, formulas, business and/or
                  marketing plans, processes or any other proprietary or
                  confidential information with respect to the Company and its
                  business, financial condition, business operations or methods,
                  or business prospects. The preceding sentence shall not apply
                  to information which (i) is, was or becomes generally known or
                  available to the public or the industry other than as a result
                  of a disclosure by Purchaser in violation of this Agreement,
                  or (ii) is required to be disclosed by law. Purchaser will
                  advise Vendors, in writing, of any request, including a
                  subpoena or similar legal inquiry, to disclose any such
                  confidential information, such that Vendors can seek
                  appropriate legal relief.

         (d)      Equitable Relief - Purchasers acknowledge that the covenants
                  contained in each of paragraphs (a), (b), and (c) of this
                  Section 5.2 are a material inducement for Vendors to execute
                  and deliver this Agreement and to consummate the transac-
                  tions contemplated hereby. Accordingly, Purchaser acknowledges
                  and agrees that the restrictions contained in each of
                  paragraphs (a), (b), and (c) of this Section 5.2 are
                  reasonable and necessary for the protection of the business of
                  the Company, and Vendors' investment in the Company, and that
                  a breach of any such restriction could not adequately be
                  compensated by damages in an action at law. In the event of a
                  breach or threatened breach by Purchaser of any of the
                  provisions of any of paragraphs (a), (b), or (c) of this
                  Section 5.2, Vendors shall be entitled to obtain, without the
                  necessity of posting bond therefor, an injunction (preliminary
                  or permanent, or a temporary restraining order) restraining
                  Purchaser from the activity or threatened activity
                  constituting, or which would constitute, a breach of this
                  Agreement, as well as damages and an equitable accounting of
                  all earnings, profits and other benefits arising from such a
                  violation, which right shall be cumulative and in addition to
                  any other rights or remedies to which Vendors may be entitled.

         (e)      Severability - Each and every provision set forth in each of
                  paragraphs (a), (b), and (c) this Section 5.2 is independent
                  and severable from the others, and no provision shall be
                  rendered unenforceable by virtue of the fact that, for any
                  reason, any other or others of them may be unenforceable in
                  whole or in part. The parties hereto agree that if any
                  provision of any of paragraphs (a), (b), or (c) of this
                  Section 5.2 shall be declared by a court of competent
                  jurisdiction to be unenforceable for any reason whatsoever,
                  the court may appropriately limit or modify such provision,
                  and such provision shall be given effect to the maximum extent
                  permitted by applicable law.

         (f)      Consents - Purchaser shall use its reasonable efforts and make
                  every good faith attempt to obtain any and all consents and
                  estoppel letters which may be necessary, appropriate, or
                  required in order to permit consummation of the transactions
                  contemplated herein.



                                       27
<PAGE>   28
5.3 JOINT OBLIGATIONS OF VENDORS AND PURCHASER - During the period from the date
of this Agreement to the Closing Time, the following shall apply with equal
force to Vendors and Purchaser:

         (a)      Notice - Each Party shall promptly give the other parties
                  written notice of the existence or occurrence of any condition
                  that would make any representation or warranty of the
                  notifying Party untrue or that might reasonably be expected to
                  prevent the consummation of the transactions herein
                  contemplated.

         (b)      Performance - No Party shall intentionally perform or omit to
                  perform any act which, if performed or omitted, would prevent
                  or excuse the performance of this Agreement by any Party
                  hereto or that would result in any representation or warranty
                  contained herein of that Party being untrue in any material
                  respect as of the date hereof and as if originally made on and
                  as of the Closing Date.

         (c)      Hart-Scott-Rodino Filings - Each party shall take whatever
                  steps are necessary to make any filings required under the
                  Hart Act not later than ten days after the date of execution
                  of this Agreement.

                                    ARTICLE 6

                            POST CLOSING OBLIGATIONS

6.1 OBLIGATIONS OF VENDORS - Following the Closing, Vendors shall each be
subject to the following obligations:

         (a)      Covenant Not to Compete - In consideration of the execution
                  and delivery of this Agreement by Purchaser, and in
                  consideration of the Purchase Price, and as additional
                  consideration therefor, each of the Vendors unconditionally
                  agrees that during the Restricted Period (as defined below) no
                  Vendor will, directly or indirectly (including, without
                  limitation, as a partner, shareholder, director, officer or
                  employee of, or lender or consultant to, any other person or
                  entity), for himself, herself or itself, or on behalf of, or
                  in conjunction with, any other Person or governmental entity,
                  in any manner whatsoever, or in any other capacity within,
                  into or from the Restricted Territory (as defined below)
                  engage or cause others to engage in the Business, or any
                  aspect thereof, unless first authorized in writing by
                  Purchaser, which authorization may be withheld in the sole and
                  absolute discretion of Purchaser. For purposes of this
                  Agreement, the term "Restricted Period" shall mean the period
                  ending three (3) years from the Closing Date. For purposes of
                  this Agreement, the term "Restricted Territory" shall mean the
                  State of Arizona. If any Vendor violates his, her or its
                  obligations under this Section 6.1(a), then the Restricted
                  Period shall be extended by the period of time equal to that
                  period beginning when the activities constituting such
                  violation commenced and ending when the activities
                  constituting such violation



                                       28
<PAGE>   29
                  terminated. Notwithstanding the foregoing, the obligations of
                  the Vendors under this Section 6.1(a) shall terminate if
                  Ramsey is terminated by Purchaser without Cause as defined and
                  described in the Employment Agreement. The Purchaser agrees
                  that no breach of this covenant not to compete will occur as a
                  result of Ramsey's formation of and activities with respect to
                  any 501(c)(3) foundation, his continued association with the
                  International Association of Firefighters, his continued
                  ownership and operation of an ambulance service company in
                  Pima County under the name Kords Southwest, or his continued
                  service as President of the Arizona Ambulance Association.

         (b)      Nonsolicitation - In consideration of the execution and
                  delivery of this Agreement by Purchaser, and in consideration
                  of the Purchase Price, each of the Vendors agrees that for a
                  period of three (3) years following the Closing Date no Vendor
                  will directly or indirectly solicit or cause others to solicit
                  (i) in respect of the Business, any Person or any other entity
                  that is, or was within the twelve (12) month period
                  immediately prior to the Closing, a customer or supplier of
                  the Company or (ii) any person who, on the date hereof, is an
                  employee of the Company and whose annual compensation from the
                  Company exceeds $25,000, for employment or as an independent
                  contractor with any Person or entity, unless first authorized
                  in writing by Purchaser, which authorization may be withheld
                  in the sole and absolute discretion of Purchaser. If any
                  Vendor violates his, her or its obligations under this Section
                  6.1(b), then the time periods hereunder shall be extended by
                  the period of time equal to that period beginning when the
                  activities constituting such violation commenced and ending
                  when the activities constituting such violation terminated.
                  Notwithstanding the foregoing, the obligations of the Vendors
                  under this Section 6.1(b) shall terminate if Ramsey is
                  terminated by Purchaser without Cause as defined and described
                  in the Employment Agreement.

         (c)      Trade Secrets and Other Information - In consideration of the
                  execution and delivery of this Agreement by Purchaser, and in
                  consideration of the Purchase Price, each of the Vendors
                  agrees that after the Closing no Vendor will communicate or
                  divulge to, or use for the benefit of, any Person other than
                  Purchaser or the Company, or its or their agents and
                  representatives, any of the trade secrets, methods, formulas,
                  business and/or marketing plans, processes or any other
                  proprietary or confidential information with respect to the
                  Company and its business, financial condition, business
                  operations or methods, or business prospects. The preceding
                  sentence shall not apply to information which (i) is, was or
                  becomes generally known or available to the public or the
                  industry other than as a result of a disclosure by a Vendor in
                  violation of this Agreement, or (ii) is required to be
                  disclosed by law. Vendors will advise Purchaser, in writing,
                  of any request, including a subpoena or similar legal inquiry,
                  to disclose any such confidential information, such that
                  Purchaser can seek appropriate legal relief.



                                       29
<PAGE>   30
         (d)      Confidentiality - At all times after the Closing, Vendors will
                  maintain as confidential the discussions between Vendors and
                  Purchaser, and the terms and conditions of this Agreement, and
                  the other agreements to be executed in connection herewith,
                  and except as required by law, will not make any trade press
                  or other announcement or disclosure in relation to such
                  discussions whether before or after Closing without the prior
                  written consent of Purchaser.

         (e)      Equitable Relief - Vendors acknowledge that the covenants
                  contained in each of paragraphs (a), (b), (c), and (d) of this
                  Section 6.1 are a material inducement for Purchaser to execute
                  and deliver this Agreement and to consummate the transactions
                  contemplated hereby. Accordingly, Vendors acknowledge and
                  agree that the restrictions contained in each of paragraphs
                  (a), (b), (c), and (d) of this Section 6.1 (including, without
                  limitation, the Restricted Period and the Restricted
                  Territory) are reasonable and necessary for the protection of
                  the business of the Company, and Purchaser's investment in the
                  Company, and that a breach of any such restriction could not
                  adequately be compensated by damages in an action at law. In
                  the event of a breach or threatened breach by any Vendors of
                  any of the provisions of any of paragraphs (a), (b), (c), or
                  (d) of this Section 6.1, Purchaser shall be entitled to
                  obtain, without the necessity of posting bond therefor, an
                  injunction (preliminary or permanent, or a temporary
                  restraining order) restraining that Vendor from the activity
                  or threatened activity constituting, or which would
                  constitute, a breach of this Agreement, as well as damages and
                  an equitable accounting of all earnings, profits and other
                  benefits arising from such a violation, which right shall be
                  cumulative and in addition to any other rights or remedies to
                  which Purchaser may be entitled.

         (f)      Severability - Each and every provision set forth in each of
                  paragraphs (a), (b), (c), and (d) this Section 6.1 is
                  independent and severable from the others, and no provision
                  shall be rendered unenforceable by virtue of the fact that,
                  for any reason, any other or others of them may be
                  unenforceable in whole or in part. The parties hereto agree
                  that if any provision of any of paragraphs (a), (b), (c) or
                  (d) of this Section 6.1 shall be declared by a court of
                  competent jurisdiction to be unenforceable for any reason
                  whatsoever, the court may appropriately limit or modify such
                  provision, and such provision shall be given effect to the
                  maximum extent permitted by applicable law.

         (g)      Consents - Vendors shall use their reasonable efforts and make
                  every good faith attempt to obtain any and all consent and
                  estoppel letters, if any, reasonably requested by Purchaser to
                  or in connection with the assignment of, or alternate
                  arrangements satisfactory to Purchaser with respect to, any
                  contract, lease, license, permit, agreement, or other
                  instrument, which is to be an asset of the Company, or which
                  may be necessary, appropriate, or required in order to permit
                  the conduct of the business and operations of the Company
                  after the Closing to



                                       30
<PAGE>   31
                  be in all respects the same as the conduct of the business and
                  operations of the Company prior to the Closing.

6.2 OBLIGATIONS OF PURCHASER - Following the Closing, Purchaser shall be subject
to the following obligations:

         (a)      Tax Amendments - The Purchaser agrees that the Company shall
                  not, and the Purchaser shall not cause the Company to, amend
                  the Company's tax returns for 1995 or earlier without the
                  prior consent of Ramsey. In the event the Company and/or the
                  Purchaser amends such tax returns without Ramsey's consent,
                  the Purchaser agrees to indemnify the Vendors for any
                  liabilities that any of them may occur as a result of any such
                  amendment; provided, however, that Vendors agree jointly and
                  severally to indemnify, defend and hold harmless the Purchaser
                  and the Company for any liabilities, costs, penalties, fines
                  and interest that either of them may incur as the result of
                  any refusal to grant the consent referred to above.

         (b)      Non Interference With Leases - Purchaser acknowledges the
                  existence of certain real property leases between the Company
                  and NRM Properties, Inc. and Chaparral Properties, Inc.
                  (collectively the "Landlords"), and agrees not to interfere
                  with such leases and to cause the Company to abide by such
                  leases. In the event that the Company and/or the Purchaser
                  reaches this Agreement, the Purchaser shall pay to the
                  appropriate Landlord the full amount of all unpaid monetary
                  obligations of the Company through the lease period in effect
                  at the time of the Closing and agrees that such remedy is in
                  addition to all other remedies that the Landlords or the
                  Vendors may have at law or in equity.

6.3 OBLIGATIONS OF VENDORS AND PURCHASER - Following the Closing, Vendors and
Purchaser shall execute such further documents, and perform such further acts,
as may be necessary to transfer and convey the Purchased Shares to Purchaser, on
the terms herein contained, and to otherwise comply with the terms of this
Agreement and consummate the transactions herein provided.

6.4 SECTION 338(h)(10) ELECTION

         (a)      Making the Section 338(h)(10) Election; Form 8023-A - Vendors
                  shall timely join with the Purchaser in making an election
                  pursuant to Section 338(h)(10) of the Code (and any
                  corresponding election under state law) (the "Section
                  338(h)(10) Election"). After Closing, Purchaser will promptly
                  prepare IRS Form 8023-A ("Form 8023-A") and any related
                  schedules required to be included with such form and Vendors
                  shall provide the Purchaser with all necessary information to
                  timely prepare such schedules (the "Election Schedules").
                  Purchaser shall submit the Form 8023-A and the Election
                  Schedules to the Vendors for their review. The Vendors shall
                  immediately execute the Form 8023-A and submit seven



                                       31
<PAGE>   32
                  original signed duplicates thereof to Purchaser who shall be
                  entitled to file the Form 8023-A and the Election Schedules
                  with the IRS. Vendors shall also timely comply with their
                  responsibilities as required by the Code to effect the
                  338(h)(10) Election.

         (b)      Section 338(h)(10) Election Purchase Price Adjustment. The
                  Purchaser hereby covenants and agrees to defend, indemnify and
                  hold harmless the Vendor for, from and against any tax
                  liability, including related penalties, interest and any
                  additional fees and costs (including, without limitation,
                  attorneys' and accountants' fees and costs) that accrue to the
                  Vendor as a direct result of the Section 338(h)(10) Election
                  (the "Tax Liability"). The Tax Liability resulting from the
                  Section 338(h)(10) Election shall be paid in cash to the
                  Vendor immediately prior to the time such Tax Liability, if
                  any, is required to be paid to the applicable taxing
                  authority.

                                    ARTICLE 7

                                 INDEMNIFICATION

7.1 INDEMNIFICATION BY VENDORS

         (a)      General - Subject to Section 7.4 hereof, Vendors jointly and
                  severally covenant and agree to defend, indemnify and hold
                  Purchaser and the Company, its and their officers, directors,
                  shareholders and subsidiaries, harmless for, from and against
                  any and all damages, losses, liabilities (absolute and
                  contingent), fines, penalties, costs and expenses (including,
                  without limitation, reasonable counsel fees and costs and
                  expenses incurred in the investigation, defense or settlement
                  of any claim covered by this indemnity) with respect to or
                  arising out of any demand, claim, inquiry, investigation,
                  proceeding, action or cause of action that Purchaser and/or
                  the Company, its and their officers, directors, shareholders
                  and subsidiaries, may suffer or incur by reason of: (a) the
                  inaccuracy of any of the representations or warranties of
                  Vendors contained in this Agreement, or any of the agreements,
                  certificates, documents, exhibits or schedules delivered in
                  connection with this Agreement; (b) the failure to comply
                  with, or the breach or default by any Vendor of any of the
                  covenants, warranties or agreements made by that Vendor
                  contained in this Agreement, or any of the agreements,
                  certificates, documents, exhibits or schedules delivered in
                  connection with this Agreement; (c) any pending or threatened
                  litigation, claims, investigations, inquiries, regulatory
                  audits or assessments, or other similar proceedings against
                  Purchaser and/or the Company and/or its or their directors,
                  officers, shareholders, employees, agents or representatives,
                  as well as any future litigation, claims, investigations,
                  inquiries, regulatory audits or assessments, or other similar
                  proceedings against the Purchaser and/or the Company and/or
                  its or their directors, officers, shareholders, employees,
                  agents or representatives that arise



                                       32
<PAGE>   33
                  from a state of facts existing prior to the Closing, and which
                  are not fully covered and reimbursed by insurance; or (d) any
                  liability or obligation of the Company not reflected, provided
                  for, or adequately reserved against on the balance sheets
                  included in the Financial Statements. Purchaser and/or the
                  Company shall be entitled to offset against any amount owed by
                  Purchaser and/or the Company to Vendors, (or any of them) any
                  amount owed to Purchaser and/or the Company by Vendor, (or any
                  of them) or any of their Affiliates.

         (b)      Environmental - Subject to Section 7.4 hereof, Vendors jointly
                  and severally covenant and agree to defend, indemnify and hold
                  Purchaser and/or the Company, and their officers, directors
                  and shareholders harmless for, from and against any and all
                  damages, losses, liabilities (absolute and contingent), fines,
                  penalties, costs and expenses (including, without limitation,
                  reasonable counsel fees and costs and expenses incurred in the
                  investigation, defense or settlement of any claim covered by
                  this indemnity and costs associated with any environmental
                  assessments and/or remediation expenses) by reason of any
                  inaccuracy of any of the representations or warranties set
                  forth in Section 3.1(cc) hereof, or with respect to or arising
                  out of any demand, claim, inquiry, investigation, proceeding,
                  action, or cause of action brought by any governmental agency
                  or instrumentality or any Person other than Purchaser, which
                  Purchaser and/or the Company, or any of their officers,
                  directors or shareholders may suffer or incur by reason of:

                  (i)      any generation, transportation, storage, treatment or
                           disposal of industrial, toxic or hazardous substances
                           or solid or hazardous wastes occurring on or prior to
                           the Closing Date including, without limitation, any
                           waste or other disposal activities or discharges that
                           occurred at a facility on which any portion of the
                           Company's (or its predecessors') business was
                           conducted, any waste or other disposal activities or
                           discharges that occurred off of any such facility
                           with regard to wastes and other substances generated
                           on such facility, and any waste or other disposal
                           activities or discharges that occurred on real estate
                           at any time whether or not the Company (or its
                           predecessors) owned or leased such real estate at the
                           time such waste or other disposal activities or
                           discharges were engaged in, where the Company or
                           Persons at the direction of the Company performed
                           such waste or other disposal activities or
                           discharges;

                  (ii)     any spills, discharges, leaks, emissions, injections,
                           escapes, dumping, or any releases as defined now or
                           in the future under the Comprehensive Environmental
                           Response, Compensation, and Liability Act of 1980,
                           P.L. 96-510, as amended or reauthorized from time to
                           time, or any other similar federal, state or local
                           laws, statutes, rules or regulations, occurring on or
                           prior to the Closing Date, including, but not limited
                           to, both those releases or incidents involving
                           environmental contamination





                                       33
<PAGE>   34
                           that required notification or reporting to
                           appropriate federal, state or local officials or
                           agencies, or clean-up or remedial activities and
                           those releases or incidents which occurred prior to
                           the effective date of any requirements imposing such
                           notification or reporting obligations or clean-up or
                           remedial activities, but which would have been
                           subject to such obligations if they had occurred
                           subsequent to the effective date of such
                           requirements;

                  (iii)    any discharges to surface waters or groundwaters
                           occurring on or prior to the Closing Date;

                  (iv)     any air emissions occurring on or prior to the
                           Closing Date;

                  (v)      the exposure of and resulting consequences to any
                           persons, including, but not limited to, employees of
                           the Company (or any of its predecessors), to any
                           mineral, chemical or industrial product, raw material
                           intermediate, by-product or waste, or substance
                           created, generated, processed, handled or originating
                           at a facility at which the Company (or any of its
                           predecessors) conducted business on or prior to the
                           Closing Date or otherwise used by the Company (or any
                           of its predecessors) in the conduct of its business;

                  (vi)     any violations by the Company (or any of its
                           predecessors) occurring on or prior to the Closing
                           Date of federal, state or local (A) environmental
                           laws, or (B) occupational or employee health and
                           safety laws;

                  (vii)    any and all actions, failures to act and negligence
                           in monitoring, maintaining and upkeep of on-site
                           storage, treatment and disposal facilities on or
                           prior to the Closing Date;

                  (viii)   any misuse, removal, failure to properly maintain
                           and/or monitor storage tanks on or prior to the
                           Closing Date; or

                  (ix)     any violations, fees, obligations or failures to
                           comply with any and all environmental permit
                           requirements on or prior to the Closing Date.

7.2 INDEMNIFICATION BY PURCHASER

         (a)      General - Subject to Section 7.4 hereof, Purchaser covenants
                  and agrees to defend, indemnify and hold each Vendor harmless
                  for, from and against any and all damages, losses, liabilities
                  (absolute and contingent), fines, penalties, costs and
                  expenses (including, without limitation, reasonable counsel
                  fees and costs and expenses incurred in the investigation,
                  defense or settlement of any claim covered by this indemnity)
                  with respect to or arising out of any demand, claim, inquiry,



                                       34
<PAGE>   35
                  investigation, proceeding, action and/or cause of action that
                  any Vendor may suffer or incur by reason of: (a) the
                  inaccuracy of any of the representations or warranties of
                  Purchaser contained in this Agreement, or any of the
                  agreements, certificates, documents, exhibits or schedules
                  delivered by Purchaser in connection with this Agreement; and
                  (b) the failure to comply with, the breach or the default by
                  Purchaser of any of the covenants, warranties or agreements
                  made by Purchaser in this Agreement, or any of the agreements,
                  certificates, documents, exhibits or schedules delivered by
                  Purchaser in connection with this Agreement.

         (b)      Environmental - Subject to Section 7.4 hereof, Purchaser
                  covenants and agrees to defend, indemnify and hold each Vendor
                  harmless for, from and against any and all damages, losses,
                  liabilities (absolute and contingent), fines, penalties, costs
                  and expenses (including, without limitation, reasonable
                  counsel fees and costs and expenses incurred in the
                  investigation, defense or settlement of any claim covered by
                  this indemnity) with respect to or arising out of any demand,
                  claim, inquiry, investigation, proceeding, action or cause of
                  action brought by any governmental agency or instrumentality
                  or any Person other than Vendors which any Vendor may suffer
                  or incur by reason of:

                  (i)      any generation, transportation, storage, treatment or
                           disposal of industrial, toxic or hazardous substances
                           or solid or hazardous wastes occurring after the
                           Closing Date including, without limitation, any waste
                           or other disposal activities or discharges that occur
                           after the Closing Date at a facility on which any
                           portion of the business of the Company is conducted,
                           any waste or other disposal activities or discharges
                           that occur after the Closing Date off of any such
                           facility with regard to wastes and other substances
                           generated after the Closing Date on such facility,
                           and any waste or other disposal activities or
                           discharges that occur after the Closing Date on real
                           estate owned or leased by the Company, at any time
                           after the Closing Date whether or not the Company
                           owns or leases such real estate at the time such
                           waste or other disposal activities or discharges are
                           engaged in, and whether or not the Company performs
                           such waste or other disposal activities or
                           discharges;

                  (ii)     any spills, discharges, leaks, emissions, injections,
                           escapes, dumping, or any releases as defined now or
                           in the future under the Comprehensive Environmental
                           Response, Compensation, and Liability Act of 1980,
                           P.L. 96-510, as amended or reauthorized from time to
                           time, or any other similar federal, state or local
                           laws, statutes, rules or regulations occurring after
                           the Closing Date, including, but not limited to, both
                           those releases or incidents involving environmental
                           contamination which require notification or reporting
                           to appropriate federal, state or local officials or
                           agencies, or clean-up or remedial activities and
                           those releases



                                       35
<PAGE>   36
                           or incidents which occurred prior to the effective
                           date of any requirements imposing such notification
                           or reporting obligations or clean-up or remedial
                           activities, but which would have been subject to such
                           obligations if they had occurred subsequent to the
                           effective date of such requirements;

                  (iii)    any discharges to surface waters or groundwaters
                           occurring after the Closing Date;

                  (iv)     any air emissions occurring after the Closing Date;

                  (v)      the exposure after the Closing Date of and resulting
                           consequences to any persons, including, but not
                           limited to, employees of Purchaser to any mineral,
                           chemical or industrial product, raw material
                           intermediate, by-product or waste, or substance
                           created, generated, processed, handled or originated
                           after the Closing Date at a facility at which
                           Purchaser, or the Company conducts business after the
                           Closing Date or otherwise used after the Closing Date
                           by Purchaser or the Company in the conduct of its
                           business or contained in or constituting a part of
                           merchandise which is sold by Purchaser or the Company
                           after the Closing Date;

                  (vi)     any violations by Purchaser or the Company occurring
                           after the Closing Date of federal, state or local (A)
                           Environmental Laws, or (B) occupational or employee
                           health and safety laws;

                  (vii)    any and all actions, failures to act and negligence
                           in monitoring, maintaining and upkeep of on-site
                           storage, treatment and disposal facilities after the
                           Closing Date;

                  (viii)   any misuse, removal, failure to properly maintain
                           and/or monitor storage tanks after the Closing Date;
                           and

                  (ix)     any violations, fees, obligations or failure to
                           comply with any and all environmental permit
                           requirements after Closing Date.

7.3 NOTICE AND RIGHT TO DEFEND THIRD-PARTY CLAIMS - Promptly upon receipt of
notice of any claim, demand or assessment or the commencement of any suit,
action or proceeding with respect to which indemnity may be sought pursuant to
this Agreement, the party seeking to be indemnified or held harmless (the
"Indemnitee") shall notify in writing, if possible, within sufficient time to
respond to such claim or answer or otherwise plead in such action (but in any
event within thirty (30) days), the party from whom indemnification is sought
(the "Indemnitor"). In case any claim, demand or assessment shall be asserted,
or suit, action or proceeding commenced against the Indemnitee, the Indemnitor
shall be entitled, at the Indemnitor's expense, to participate therein, and, to
the extent that it may wish, to assume the defense, conduct or



                                       36
<PAGE>   37
settlement thereof, at its own expense, with counsel satisfactory to the
Indemnitee, whose consent to the selection of counsel shall not be unreasonably
withheld or delayed, provided that the Indemnitor confirms to the Indemnitee
that it is a claim to which Indemnitee's rights of indemnification apply. The
Indemnitor shall have the right to settle or compromise monetary claims;
however, as to any other claim, the Indemnitor shall first obtain the prior
written consent from the Indemnitee, which consent shall be exercised in the
sole discretion of the Indemnitee. After notice from the Indemnitor to the
Indemnitee of Indemnitor's intent so to assume the defense, conduct, settlement
or compromise of such action, the Indemnitor shall not be liable to the
Indemnitee for any legal or other expenses (including, without limitation,
settlement costs) subsequently incurred by the Indemnitee in connection with the
defense, conduct, settlement or compromise of such action while the Indemnitor
is diligently defending, conducting, settling or compromising such action. The
Indemnitor shall be afforded at least thirty (30) days, at its sole cost and
expense, to resist, defend and compromise any claim for which indemnification is
sought. The Indemnitor shall keep the Indemnitee promptly apprised of the status
of the suit, action or proceeding and shall make Indemnitor's counsel available
to the Indemnitee, at the Indemnitor's expense, upon the request of the
Indemnitee. The Indemnitee shall reasonably cooperate with the Indemnitor in
connection with any such claim and shall make personnel, books and records and
other information relevant to the claim available to the Indemnitor during
normal business hours to the extent that such personnel, books and records and
other information are in the possession and/or control of the Indemnitee. If the
Indemnitor decides not to participate, the Indemnitee shall be entitled, at the
Indemnitor's expense, to defend, conduct, settle and/or compromise such matter
with counsel satisfactory to the Indemnitor, whose consent to the selection of
counsel shall not be unreasonably withheld or delayed.

7.4 SURVIVAL OF OBLIGATIONS - The liability of Vendors and Purchaser for
indemnification pursuant to this Article 7 shall (i) survive until terminated by
the applicable statute of limitations as to matters relating to: (a) ownership
and title to any of the assets of the Company; (b) ownership and title to the
capital stock of the Company; (c) competency to execute and deliver documents to
effect the transactions contemplated thereby and hereby, and the legal, binding
and enforceable nature thereof and hereof; (d) the environment; and (e) taxes;
(ii) expire three (3) years from the Closing Date with respect to claims not
made prior thereto relating to any price or reimbursement adjustment under any
contract or arrangement with the United States Government, any state government,
or any insurer or healthcare provider organization involving any liability,
claim and/or fraud with respect to billings or reimbursement under either
Medicare or Medicaid for services provided by the Company prior to the Closing
Date; and (iii) expire two (2) years from the Closing Date with respect to
claims not made prior thereto relating to all other matters not referenced in
this Section 7.4. This Section in no way limits any claims that an Indemnitee
may have against an Indemnitor for fraud or for the breach of any direct
covenant made by the Indemnitor to the Indemnitee contained in this Agreement or
the other agreements delivered in connection therewith.



                                       37
<PAGE>   38
                                    ARTICLE 8

                                   TERMINATION

8.1 RIGHT TO TERMINATE - Notwithstanding anything to the contrary contained
herein, this Agreement and the transactions contemplated hereby may be
terminated at any time prior to the Closing: (a) by Purchaser if the conditions
precedent set forth in Section 4.1 are not satisfied or waived in writing by
Purchaser; or (b) by Vendors if the conditions precedent set forth in Section
4.2 are not satisfied or waived in writing by Vendors. In addition, this
Agreement shall terminate if the Closing has not occurred by April 15, 1997,
unless extended by written agreement of the Parties hereto.

                                    ARTICLE 9

                                     GENERAL

9.1 DISCLOSURE SCHEDULES - The Schedules referred to in Section 3.1 and Section
3.2 of this Agreement reflect information supplied to Purchaser and Vendors,
respectively, in the course of their investigation of the Company and Purchaser,
respectively. Vendors may supplement or amend any Schedule from time to time
prior to or at the Closing, by notice in accordance with the terms of this
Agreement, including by delivering one or more supplements or amendments to
correct any matter which would constitute a breach of any representation or
warranty contained herein. All references to any Schedule hereto which is
supplemented or amended as provided in this Section 9.1 shall, for all purposes,
whether or not the transactions contemplated hereby occur, be deemed to be a
reference to such Schedule as so supplemented or amended.

9.2 PUBLIC NOTICES - All public notices to third parties and all other publicity
concerning the transactions contemplated by this Agreement shall be jointly
planned and coordinated by the Vendors and the Purchaser and no Party shall act
unilaterally in this regard without the prior approval of the Vendors and the
Purchaser or the other of them.

9.3 EXPENSES - The expenses incurred by each party hereto in connection with
this Agreement and the transactions provided herein shall be borne by such
party. Notwithstanding the foregoing, all professional fees incurred by the
Vendors in connection with the transactions contemplated by this Agreement shall
be borne by the Vendors and all expenses incurred in connection with the
preparation of any environmental reports after the date of execution of this
Agreement with respect to the real property owned or leased by the Company shall
be borne by the Purchaser (which reports shall remain the property of the
Purchaser following the Closing).

9.4 TIME - Time shall be of the essence hereof.

9.5 NOTICES - Any notice, direction or other document required or permitted to
be given hereunder or for the purposes hereof (hereinafter in this Section 9.5
called a "notice") to any



                                       38
<PAGE>   39
Party shall be in writing and shall be sufficiently given if delivered
personally, or if sent by prepaid registered mail or if transmitted by telex,
facsimile or other form of recorded communication tested prior to transmission
to such Party:

         (a)      in the case of a notice to the Vendors to:

                            Robert E. Ramsey, Jr.
                            222 Main Street East
                            Mesa, Arizona 85201

                  with a copy to the Vendors' Counsel at

                            Gallagher & Kennedy, P.A.
                            2600 North Central Avenue
                            Phoenix, AZ 85004-3020
                            Attention: Terence W. Thompson, Esq.
                            with a facsimile number of (602) 257-9459.

         (b)      in the case of a notice to the Purchaser at

                            8401 E. Indian School Road
                            Scottsdale, Arizona  85251
                            Attention:  Warren S. Rustand
                            with a facsimile number of (602) 481-3328

                  with a copy to Purchaser's Counsel at

                            O'Connor Cavanagh Anderson
                            Killingsworth & Beshears, P.A.
                            One E. Camelback Road, Suite 1100
                            Phoenix, Arizona  85012
                            Attention:  John B. Furman, Esq.
                            with a facsimile number of (602) 263-2900

or at such other address as the Party to whom such writing is to be given shall
have last notified the Party giving the same in the manner provided in this
section. Any notice delivered in person to the Party to whom it is addressed as
hereinbefore provided shall be deemed to have been given and received on the day
it is so delivered at such address, provided that if such day is not a Business
Day then the notice shall be deemed to have been given and received on the first
Business Day next following such day. Any notice mailed as aforesaid shall be
deemed to have been given and received on the seventh Business Day following the
date of its mailing. Any notice transmitted by telex, facsimile or other form of
recorded communication shall be deemed given and received on the Business Day of
its transmission.



                                       39
<PAGE>   40
9.6 ASSIGNMENT - Neither this Agreement nor any rights or obligations hereunder
shall be assignable by any Party without the prior written consent of the other
Party hereto; provided, however, that the Vendors shall be entitled to assign
their rights to receive payments hereunder (or under any related documents) to
any person without the consent of the Purchaser. Subject thereto, this Agreement
shall enure to the benefit of and be binding upon the Parties and their
respective heirs, executors, administrators and successors (including any
successor by reason of amalgamation of the Purchaser) and permitted assigns.

9.7 FURTHER ASSURANCES - The Parties hereto shall with reasonable diligence do
all such things and provide all such reasonable assurances as may be required to
consummate the transactions contemplated hereby, and each Party shall provide
such further documents or instruments required by any other Party as may be
reasonably necessary or desirable to effect the purpose of this Agreement and
carry out its provisions, whether before or after the Closing.

9.8 SEVERABILITY - If any covenant or provision of this Agreement (other than
the provisions pertaining to payments to be made to the Vendors) is prohibited
in whole or in part in any jurisdiction, such covenant or provision shall, as to
such jurisdiction, be ineffective to the extent of such prohibition without
invalidating the remaining covenants and provisions hereof and shall, as to such
jurisdiction, be deemed to be severed from this Agreement to the extent of such
prohibition.

9.9 COUNTERPARTS - This Agreement may be executed by the Parties in separate
counterparts (and by facsimile transmission) each of which when so executed and
transmitted or delivered shall be an original, but all such counterparts shall
together constitute one and the same instrument.

9.10 MEDIATION AND ARBITRATION - Any dispute, controversy or claim (including
without limitation tort claims, requests for provisional remedies or other
interim relief, and issues as to the arbitrability of any matter) arising out of
or relating to this Agreement, or breach thereof, (a) shall be settled by
negotiation at a meeting between the Vendors and the chief executive officer of
the Purchaser held in Phoenix, Arizona within 5 days after notice given by any
party hereto to the other parties hereto, and (b) if within that 5 day period
settlement cannot be achieved through negotiation, it shall be settled (i)
first, by the parties trying in good faith to settle the dispute by mediation
under the Commercial Mediation Rules of the American Arbitration Association
("AAA") (such mediation session to be held in Phoenix, Arizona and to commence
with 10 days of the appointment of the mediator by the AAA), and (ii) if the
controversy, claim or dispute cannot be settled by mediation, then by
arbitration administered by the AAA under its Commercial Arbitration Rules and
in accordance with its expedited hearing procedures (such arbitration to be held
in Phoenix, Arizona before a single arbitrator by the AAA), and judgment on the
award rendered by the arbitrator may be entered in any court having jurisdiction
thereof.




                                       40
<PAGE>   41
9.11 ATTORNEYS' FEES - If any action is necessary to enforce the terms of this
Agreement, the prevailing party shall be entitled to recover from the other
party all costs, expenses and fees incurred by the prevailing party (including
reasonable attorneys' fees, costs and disbursements) in addition to other relief
to which the prevailing party may be entitled.

         IN WITNESS WHEREOF, the Parties have set their hand this 25th day of
February, 1997 through our trust in God and our service to others. . . . for
life.

                               Rural/Metro Corporation, a Delaware corporation


                               By: /s/ James H. Bolin
                               -----------------------------------------------
                                   James H. Bolin, President


                               /s/ Robert E. Ramsey
                               -----------------------------------------------
                               Robert E. Ramsey, Jr., individually



                                       41
<PAGE>   42
                                CONSENT OF SPOUSE

         The undersigned spouse of Robert E. Ramsey, Jr., who is a party to the
above Agreement of Purchase and Sale, pertaining to the sale of the stock of
Medical Emergency Devices and Services (MEDS), Inc., an Arizona corporation (the
"Agreement"), hereby declares, contemporaneously with the execution of the
Agreement, that she has read the Agreement in its entirety, and being fully
convinced of the wisdom and equity of the terms of the Agreement, and in
consideration of the premises and of the provisions of the Agreement, hereby
expresses her consent to the execution and consummation of the Agreement by
Robert E. Ramsey, Jr.

         The undersigned further agrees that in the event of the death of Robert
E. Ramsey, Jr., the dissolution of their marriage, or any occurrence
contemplated by the Agreement that gives rise to any liability or obligation of
Robert E. Ramsey, Jr., the provisions of the Agreement shall be binding upon her
to the extent of any community property she may now have or hereafter acquire,
and any and all separate property that she may hereafter possess which arises
(directly or indirectly) from any consideration given to Robert E. Ramsey, Jr.
pursuant to the Agreement or any agreement executed in connection thereto.

         The undersigned further agrees that she will, at any and all times,
make, execute and deliver such instruments and documents as may be reasonably
necessary to carry out the provisions of the Agreement, provided that no such
documents require the incurring of any liabilities in excess of that already
provided in the Agreement.

         Dated this 24th day of February, 1997.




                                             /s/ Virginia (Jenny) L. Norton
                                             ------------------------------
                                             Virginia (Jenny) L. Norton


State of Arizona   )
County of Maricopa )

The foregoing instrument was acknowledged before me this 24th day of February,
1997 by Virginia (Jenny) L. Norton.


[OFFICIAL NOTARY SEAL]                       /s/ Jacque Tenge
                                             ------------------------
                                             Notary Public
<PAGE>   43
                                   APPENDIX J

                  (i) All real property leased by the Company from NRM
Properties, Inc. or Chaparral Properties, Inc. (the "Leased Properties") is set
forth in Schedule "J" and is zoned as set forth on Schedule "J", pursuant to the
ordinances of the applicable cities, towns, villages or townships identified on
such Schedule "J", and is not located in an area that has been identified by the
Secretary of Housing and Urban Development as an area of special flood hazard.
The uses to which such real property are presently put do not violate or
conflict with the applicable provisions of such zoning ordinances, or other
zoning laws of such cities, towns, villages or townships or any other
governmental body.

                  (ii) The Company does not sublease any of its Leased
Properties. The Company does not lease any of its owned real property.

                  (iii) Neither the Company nor any Vendor, nor any one or more
of them, has retained or engaged any real estate broker, commission agent or
other person who is or may be entitled to payment of a commission or finder's
fee or other compensation in connection with any of the Leased Properties.

                  (iv) As to the Leased Properties, the present use and
operation of the real property is authorized by and in compliance with all
applicable building, fire, health, labor and safety laws, ordinances, rules and
regulations applicable to the real property, including, without limitation,
OSHA, and the Americans with Disabilities Act, and there is no litigation,
action, proceeding or any present plan or study by any governmental authority or
any private person or entity which in any way would affect the present use and
operation of the real property. There are in existence all licenses, permits and
approvals that are required for the use and operation of the Leased Properties,
and no Vendor has any reason to believe that any of the same are in jeopardy of
being revoked or not being reissued upon expiration.

                  (v) No Vendor has any knowledge of any fact or condition
existing which would result or could result in the termination or reduction of
the current access from the Leased Properties to existing public roads and
highways, or of any reduction in sewer or other utility services presently
serving the Leased Properties. Leased Properties have direct access to dedicated
roads and highways and all utility services to the Leased Properties are
furnished through dedicated or perpetual easements.

                  (vi) As to the Leased Properties, no Vendor has received
notice from any insurance company of any defects or inadequacies in such real
property or any part thereof which would materially and adversely affect the
insurability of the real property or the premiums for the insurance thereof.

                  (vii) As to the Leased Properties, no Vendor has failed to
disclose any material conditions of disrepair or other adverse conditions or
defects with respect to such


                                  Appendix J-1
<PAGE>   44
real property or any portion thereof of which that Vendor has knowledge or
which, with the exercise of reasonable diligence, that Vendor should have known.

                  (viii) As to the Leased Properties, no Vendor has any
knowledge of any planned public improvement which might result in a special
assessment levied against such real property. If any Vendor becomes aware of any
of the foregoing (whether arising before or after the date hereof) after the
date hereof, but prior to Closing, that Vendor shall give prompt written notice
thereof to Purchaser prior to Closing.


                                  Appendix J-2
<PAGE>   45

                   AMENDMENT TO AGREEMENT OF PURCHASE AND SALE

WHEREAS, RURAL/METRO CORPORATION, a Delaware corporation ("Purchaser"), and
ROBERT E. RAMSEY, JR., an individual ("Vendor"), signed that certain Agreement
of Purchase and Sale, made as of February 25, 1997 (the "Agreement"), with
respect to the purchase of all the issued and outstanding shares of the stock of
MEDICAL EMERGENCY DEVICES AND SERVICES (MEDS), INC., an Arizona corporation (the
"Company").

WHEREAS, Purchaser and Vendor desire to extend the Closing Date (as defined in
the Agreement), and amend the Agreement as set forth in this Amendment.

NOW, THEREFORE, in consideration of the premises and the mutual agreements and
covenants herein contained (the adequacy of which consideration as to each of
the parties hereto is hereby mutually admitted), the parties hereto hereby amend
the Agreement as follows:

         1. Section 1.1(e) of the Agreement is hereby modified to read as
follows:

                 "Closing Date" means the earlier of May 30, 1997 or
                 five (5) business days following the satisfaction or
                 waiver of all conditions precedent to the
                 transactions contemplated by this Agreement, or such
                 other date as the Parties may mutually agree in
                 writing;"

         2. The last sentence of Section 8.1 of the Agreement is hereby amended
to read as follows:

                 "In addition, this Agreement shall terminate if the
                 Closing has not occurred by May 30, 1997, unless
                 extended by written agreement of the Parties hereto."

         3. This Amendment shall constitute a written extension as contemplated
by the original Section 8.1 of the Agreement.

         4. The terms and conditions set forth in the letter agreement, dated
April 15, 1997, by and among Purchaser, Bob Ramsey and Barry Landon, Trustee for
the Southwest ESOP, a copy of which letter agreement is attached hereto as
Exhibit A, shall constitute amendments and supplemental provisions to the
Agreement, as applicable.
<PAGE>   46
         5. This Amendment may be executed by the parties hereto in separate
counterparts (and by facsimile transmission) each of which when so executed and
transmitted or delivered shall be an original, but all such counterparts shall
together constitute one and the same instrument.

         IN WITNESS WHEREOF, the parties hereto have set their hand as of the
15th day of April, 1997, through our trust in God and our service to others ...
for life.

                                        RURAL/METRO CORPORATION, a
                                        Delaware corporation


                                        By: /s/ James H. Bolin
                                           ____________________________________
                                           James H. Bolin, President
        
                                         /s/ Robert E. Ramsey, Jr.
                                        _______________________________________
                                        Robert E. Ramsey, Jr., individually



I HEREBY CONSENT TO THE TERMS
OF THIS AMENDMENT as of the 15th day
of April, 1997:

/s/ Virginia (Jenny) L. Norton
____________________________________
Virginia (Jenny) L. Norton


                                        2
<PAGE>   47
                                                                      EXHIBIT A


April 15, 1997


James H. Bolin, President
Rural/Metro Corporation
8401 E. Indian School Road
Scottsdale, Arizona 85251

Dear Jim:

        In response to our phone conversation in which we discussed the
extension of the Agreement of Purchase and Sale between Rural/Metro and SW
General, Inc., Southwest Ambulance of Casa Grande, Inc., Medical Emergency
Devices and Services (MEDS), Inc. and Southwest General Services, Inc., I am
asking for your acknowledgment of the following clarifications:

1.  SW General, Inc. shall, effective May 1, 1997, enter into a lease for the
3.5 acres of land adjacent to our facility at 617 W. Main. This land has been
used by Southwest since last year without any rental fees being paid. The need
for a new lease was disclosed during the due diligence process and will be
added to the Book of Schedules under Schedule "J".

2.  The original "Normalization Work Sheet" which was presented to you in
January of this year was omitted from the Schedules. The Normalization Work
Sheet will be added to the Book of Schedules under Section "H".

Additionally, Rural Metro, as presented in the Normalization Worksheet, has
acknowledged the annual draws/management fees paid to Bob Ramsey associated with
the ownership of the "S" corporations and SW General, Inc. These draws/
management fees shall continue in practice until the closing of the Agreements
at which time they shall cease and the start up of the Ramsey employment
contract shall take effect.

3.  Prior to 12/31/96 the equity of Southwest Ambulance of Casa Grande, Inc.
and MEDS were drawn out by Bob Ramsey and loaned back to the corporations as
represented by the "Notes Payable" in Schedules "A" & "C", on the respective
balance sheets of the corporations. Subsequent to 1/1/97, Bob Ramsey has drawn
the 
<PAGE>   48
equity out of Southwest General Services, Inc. The equity and all state and
federal taxes have been met by these transactions.

4.  From the time period from January 1, 1997 through the date of closing all
profits of the identified "S" corporations are passed on to SW General, Inc.
through a management fee resulting in a zero equity position. This action is
reflected in the financial statements of February and March, 1997 as presented
to Rural/Metro through the due diligence process. (See Schedule "A")

5.  As identified in Section 5.1 (b)(ii) of the Agreement, Southwest shall,
prior to close and during the normal course of business, expense such items as
management fees, annual bonus', required capital expenditures (except the two
new ambulances previously identified by SW) and miscellaneous expenses which
shall be acceptable to Rural/Metro so long as the $2,045,000 of this section is
maintained per the Agreement.

6.  Two new ambulances which were previously disclosed must be funded at this
time. This expenditure, as invoiced, shall not be utilized in the debt formulas
identified in the warranties with the original Purchase and Sale Agreement.

7.  Rural/Metro acknowledges that Ramsey may exceed the $2,045,000 as
identified in section 5 above, for the purpose of purchasing the ownership
interests of William Kordsiemon in MOROKO, Inc. Utilization of these funds in
excess of the $2,045,000 will be deducted from the MEDS purchase transaction.

8.  Rural/Metro re-clarifies the understanding as to Bob Ramsey's position,
responsibility and reporting structure as follows:

        - Bob Ramsey will serve as President and CEO of Southwest companies
          with direct management authority over the Arizona ambulance
          operations of Rural/Metro except where the fire department personnel
          directly operates the ambulance unit. In this capacity he shall 
          report directly to Bob Edwards or to Warren Rustand and not to any 
          Regional President.

        - Bob Ramsey agrees to serve as a member of the Board of Directors of
          Rural/Metro Corporation.

        - Bob Ramsey will serve in a senior executive position as a
          vice-president of Rural/Metro (reference: Employment Agreement and
          Letter of Intent) reporting to the office of the CEO under the
          direction of Warren Rustand.

<PAGE>   49
        (See also the Letter of Intent dated January 31, 1997 and the
        Agreements of Purchase and Sale dated February 25, 1997 as 
        referenced herein and exhibited in Schedule "C" of the Agreement.)

        As agreed, the closing date will be extended to Friday, May 30, 1997.
Additionally, before implementation, I would like to initially meet with
Warren, Bob and yourself to review the initial and mid-term efficiencies
created by the acquisition and merging of the entities.

        This letter of agreement and extension, as signed by the parties below,
shall be incorporated into the Agreement.

        ACKNOWLEDGED AND ACCEPTED AS OF THE DATE FIRST WRITTEN ABOVE.


                                                RURAL/METRO CORPORATION

/s/ Bob Ramsey                                  By: /s/ James Bolin
- ----------------------------                        ---------------------------
Bob Ramsey                                              James Bolin
                                                Its: President

/s/ Barry Landon
- ------------------------------
Barry Landon
Trustee for the Southwest ESOP




cc: Warren Rustand
<PAGE>   50
               SECOND AMENDMENT TO AGREEMENT OF PURCHASE AND SALE

WHEREAS, RURAL/METRO CORPORATION, a Delaware corporation ("Purchaser"), and
ROBERT E. RAMSEY, JR., an individual ("Vendor"), signed that certain Agreement
of Purchase and Sale, made as of February 25, 1997, and that certain Amendment
to Agreement of Purchase and Sale, made as of April 15, 1997 (together, the
"Agreement"), with respect to the purchase of all the issued and outstanding
shares of the stock of MEDICAL EMERGENCY DEVICES AND SERVICES (MEDS), INC., an
Arizona corporation (the "Company"). All defined terms used herein but not
otherwise defined shall have the meaning set forth in the Agreement.

WHEREAS, Purchaser and Vendor desire to extend the Closing Date (as defined in
the Agreement), and amend the Agreement as set forth in this Second Amendment.

NOW, THEREFORE, in consideration of the premises and the mutual agreements and
covenants herein contained (the adequacy of which consideration as to each of
the parties hereto is hereby mutually admitted), the parties hereto hereby amend
the Agreement as follows:

         1. Section 1.1(e) of the Agreement is hereby modified to read as
follows:

                 "Closing Date" means the earlier of July 31, 1997 or
                 five (5) business days following the satisfaction or
                 waiver of all conditions precedent to the
                 transactions contemplated by this Agreement, or such
                 other date as the Parties may mutually agree in
                 writing;"

         2. The last sentence of Section 8.1 of the Agreement is hereby amended
to read as follows:

                 "In addition, this Agreement shall terminate if the
                 Closing has not occurred by July 31, 1997, unless
                 extended by written agreement of the Parties hereto."

         3. This Second Amendment shall constitute a written extension as
contemplated by the original Section 8.1 of the Agreement.

         4. The terms and conditions set forth in the letter agreement, dated
May 30, 1997, by and among Purchaser, Bob Ramsey and Barry Landon, Trustee for
the Southwest ESOP, a copy of which letter agreement is attached hereto as
Exhibit A (the "Letter Agreement"), shall constitute amendments and supplemental
provisions to the Agreement,
<PAGE>   51
as applicable, subject to the following: Paragraph 5 of the Letter Agreement
shall be interpreted as a $277,000 indemnification threshold with respect to
claims other than Third Party Claims, in the same manner as the $50,000
indemnification threshold for Third Party Claims in Section 7.5 of the Agreement
of Purchase and Sale regarding SW General, Inc., and the $277,000
indemnification threshold shall be an aggregate threshold against the liability
of the Vendor for indemnification arising from any of the Agreements of Purchase
and Sale pertaining to the Southwest Companies.

         5. The Vendor represents and warrants that the Company is and shall be
at the Closing a valid S-Corporation as defined in Section 1361 of the Code.

         6. This Second Amendment may be executed by the parties hereto in
separate counterparts (and by facsimile transmission) each of which when so
executed and transmitted or delivered shall be an original, but all such
counterparts shall together constitute one and the same instrument.

         IN WITNESS WHEREOF, the parties hereto have set their hand as of the
30th day of May, 1997, through our trust in God and our service to others ...
for life.

                                       RURAL/METRO CORPORATION, a
                                       Delaware corporation


                                       By: /s/ James H. Bolin
                                          _____________________________________
                                          James H. Bolin, President

                                        /s/ Robert E. Ramsey, Jr.
                                       ________________________________________
                                       Robert E. Ramsey, Jr., individually



I HEREBY CONSENT TO THE TERMS
OF THIS SECOND AMENDMENT as of the
30th day of May, 1997:

/s/ Virginia (Jenny) L. Norton
________________________________
Virginia (Jenny) L. Norton


                                        2
<PAGE>   52
                                      EXHIBIT A

                             [SOUTHWEST AMBULANCE LOGO]

May 30, 1997

James Bolin, President
Rural/Metro Corporation
8401 E. Indian School Road
Scottsdale, Arizona 85251

Dear Jim:

We have again reached the threshold where an agreement to extend the Agreement
of Purchase and Sale between Rural/Metro Corporation and SW General, Inc.,
Southwest Ambulance of Casa Grande, Inc., Medical Emergency Devices and
Services (MEDS), Inc. and Southwest General Services, Inc. (collectively the
"Purchase Agreements") is required. The original "Closing Date" was April 15,
1997 and the first extension reset the Closing Date for May 30, 1997. Because
of the lengthy delay in closing, caused by the FTC approval process, many
actions and transactions have taken place, which under normal time constraints,
would not need to be addressed. However, We feel that some of the issues should
be acknowledged and signed off on by both parties.

Jim--I think you will find that we have discussed these items previously and
have mutually concurred. The clarification items are:

1. The Parties reaffirm and extend through July 31, 1997 the items clarified in
the prior extension letter dated and attested to on April 15, 1997.

2. The stock purchase price value for Rural/Metro stock shall be supported by a
twelve month average daily stock valuation equal to $33.00 per share.
Rural/Metro has provided an eleven month summary which equates to a daily per
share value of $33.90. The parties agree, that should for any reason, the
twelve month average drop below the established $33.00 value that an adjustment
shall be made to match the twelve month average.

3. The Agreement of Purchase and Sale "Schedules" shall include the Department
of Health Services White Paper presented by Rural/Metro and Southwest, the
judges findings of fact and conclusion of law with recommended decision, and
the Directors final decision and order.



222 East Main St., Mesa, AZ 85201-7410/Mailing Address: P.O. Box 1486, Mesa,
Arizona 85211-1486
                  Business: 602/655-9686    Emergency: 602/267-8991
<PAGE>   53
4. Southwest had previously identified six new ambulances which had been
purchased and excluded from the Vendors debt covenants. Subsequently,
Rural/Metro needed to purchase four of the units for their San Diego contract.
Southwest is in the process of financing the remaining two units over a 36
month period with said units to continue to be excluded from the Vendors debt
covenants. Additionally, six new units are on order by Southwest to fulfill our
service requirements. The six units are also excluded from any Vendor
covenants/warranties of the Purchase Agreements between the parties.

5. Reduction of term debt for the extended three month period of April-May-June
which is estimated to be $277,000 shall be applied to offset against any
warranty conditions of the Vendors pursuant to the Purchase Agreements.

6. Article 9 - Section 9.3 (Expenses) of the Agreement of Purchase and Sale
dated February 25, 1997 previously stipulated that "expenses incurred by each
party hereto in connection with this Agreement and the transactions provided
herein shall be borne by such party. Notwithstanding the foregoing, all
professional fees incurred by the Vendors in connection with the transactions
contemplated by this Agreement shall be borne by the Vendors and all expenses
incurred in connection with the preparation of any environmental reports after
the date of execution of this Agreement with respect to the real property owned
or leased by the Company shall be borne by the Purchaser."

Article 9 - Section 9.3 is hereby amended as follows: "Notwithstanding the
foregoing, all professional and legal fees incurred by the Vendors prior to the
original selected Close Date of March 15, 1997 shall be borne by the Vendors
and all professional and legal fees incurred by Vendors after the original
selected Close Date, up to a maximum amount of $25,000.00, shall be borne by
the Southwest Companies. Additionally, all legal fees of Patrick McGroder
shall be paid by the Southwest Companies."

7. As identified in Section 5.1(b)(ii) of the Agreement, Southwest shall, prior
to close and during the normal course of business, expense such items as
management fees, annual bonus', "S" Corps draws for the purpose of profits,
compensation and taxes, required capital expenditures (with the exception of
the previously identified eight ambulances) and miscellaneous expenses which
shall be acceptable to Rural/Metro so long as the $2,500,000 of this section is
maintained per the Agreement.

The previous identified borrowing limitation of $2,045,000 is hereby replaced
via this Letter of Agreement. This change is mandated by the additional credit
line pressures    
<PAGE>   54
As mutually agreed, the closing date will be extended to July 31, 1997.

This letter of agreement, amendment and extension, as signed by the parties
below, shall be incorporated into the Agreements of Purchase and Sale dated
February 25, 1997.

        ACKNOWLEDGED AND ACCEPTED AS OF THE DATE FIRST WRITTEN ABOVE.

                                                RURAL/METRO CORPORATION

                                                By: /s/ JAMES BOLIN
- ----------------------------                        -------------------
         Bob Ramsey                                     James Bolin


Witness and Trustee:


- ----------------------------
        Barry Landon


 
<PAGE>   55
                                      EXHIBIT A

                             [SOUTHWEST AMBULANCE LOGO]

May 30, 1997

James Bolin, President
Rural/Metro Corporation
8401 E. Indian School Road
Scottsdale, Arizona 85251

Dear Jim:

We have again reached the threshold where an agreement to extend the Agreement
of Purchase and Sale between Rural/Metro Corporation and SW General, Inc.,
Southwest Ambulance of Casa Grande, Inc., Medical Emergency Devices and
Services (MEDS), Inc. and Southwest General Services, Inc. (collectively the
"Purchase Agreements") is required. The original "Closing Date" was April 15,
1997 and the first extension reset the Closing Date for May 30, 1997. Because
of the lengthy delay in closing, caused by the FTC approval process, many
actions and transactions have taken place, which under normal time constraints,
would not need to be addressed. However, We feel that some of the issues should
be acknowledged and signed off on by both parties.

Jim- I think you will find that we have discussed these items previously and
have mutually concurred. The clarification items are:

1. The Parties reaffirm and extend through July 31, 1997 the items clarified in
the prior extension letter dated and attested to on April 15, 1997.

2. The stock purchase price value for Rural/Metro stock shall be supported by a
twelve month average daily stock valuation equal to $33.00 per share.
Rural/Metro has provided an eleven month summary which equates to a daily per
share value of $33.90. The parties agree, that should for any reason, the
twelve month average drop below the established $33.00 value that an adjustment
shall be made to match the twelve month average.

3. The Agreement of Purchase and Sale "Schedules" shall include the Department
of Health Services White Paper presented by Rural/Metro and Southwest, the
judges findings of fact and conclusion of law with recommended decision, and
the Directors final decision and order.



222 East Main St., Mesa, AZ 85201-7410/Mailing Address: P.O. Box 1486, Mesa,
Arizona 85211-1486
                  Business: 602/655-9686    Emergency: 602/267-8991
<PAGE>   56
4.  Southwest had previously identified six new ambulances which had been
purchased and excluded from the Vendors debt covenants. Subsequently,
Rural/Metro needed to purchase four of the units for their San Diego contract.
Southwest is in the process of financing the remaining two units over a 36
month period with said units to continue to be excluded from the Vendors debt
covenants. Additionally, six new units are on order by Southwest to fulfill our
service requirements. The six units are also excluded from any Vendor
covenants/warranties of the Purchase Agreements between the parties.

5.  Reduction of term debt for the extended three month period of April-May-June
which is estimated to be $277,000 shall be applied to offset against any
warranties conditions of the Vendors pursuant to the Purchase Agreements.

6.  Article 9 - Section 9.3 (Expenses) of the Agreement of Purchase and Sale
dated February 25, 1997 previously stipulated that "expenses incurred by each
party hereto in connection with this Agreement and the transactions provided
herein shall be borne by such party. Notwithstanding the foregoing, all
professional fees incurred by the Vendors in connection with the transactions
contemplated by this Agreement shall be borne by the Vendors and all expenses
incurred in connection with the preparation of any environmental reports after
the date of execution of this Agreement with respect to the real property owned
or leased by the Company shall be borne by the Purchaser."

Article 9 - Section 9.3 is hereby amended as follows: "Notwithstanding the
foregoing, all professional and legal fees incurred by the Vendors prior to the
original selected Close Date of March 15, 1997 shall be borne by the Vendors and
all professional and legal fees incurred by Vendors after the original selected
Close Date, up to a maximum amount of $25,000.00, shall be borne by the
Southwest Companies. Additionally, all legal fees of Patrick McGroder shall be
paid by the Southwest Companies."

7.  As identified in Section 5.1(b)(ii) of the Agreement, Southwest shall,
prior to close and during the normal course of business, expense such items as
management fees, annual bonus', "S" Corps draws for the purpose of profits,
compensation and taxes, required capital expenditures (with the exception of
the previously identified eight ambulances) and miscellaneous expenses which
shall be acceptable to Rural/Metro so long as the $2,500,000 of this section is
maintained per the Agreement.

The previous identified borrowing limitation of $2,045,000 is hereby replaced
via this Letter of Agreement. This change is mandated by the additional credit
line pressures 
<PAGE>   57
As mutually agreed, the closing date will be extended to July 31, 1997.

This letter of agreement, amendment and extension, as signed by the parties
below, shall be incorporated into the Agreements of Purchase and Sale dated
February 25, 1997.

        ACKNOWLEDGED AND ACCEPTED AS OF THE DATE FIRST WRITTEN ABOVE.


                                                RURAL/METRO CORPORATION
                                                By: /s/ James Bolin
- ---------------------------------                   ----------------------------
           Bob Ramsey                                        James Bolin



Witness and Trustee:


- ----------------------------------
          Barry Landon


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