FIRST AMENDMENT TO

                          AGREEMENT AND PLAN OF MERGER

         This  FIRST  AMENDMENT  TO  AGREEMENT  AND PLAN OF  MERGER  dated as of
February 2, 1996 ("First Amendment") is made by and among Fairchild  Industries,
Inc.,  a Delaware  corporation  ("Fairchild"),  RHI  Holdings,  Inc., a Delaware
corporation ("RHI"), The Fairchild Corporation,  a Delaware corporation ("TFC"),
and Shared Technologies Inc., a Delaware  corporation  ("Shared  Technologies"),
amending  certain  provisions  of the  Agreement  and Plan of Merger dated as of
November 9, 1995,  including  the  exhibits and  schedules  thereto (the "Merger
Agreement") by and among Fairchild, RHI, TFC and Shared Technologies.  Terms not
otherwise  defined herein which are defined in the Merger  Agreement  shall have
the same respective meanings herein as therein.

         WHEREAS,  Fairchild,  RHI, TFC and Shared  Technologies  have agreed to
modify certain terms and conditions of the Merger  Agreement as specifically set
forth in this First Amendment.

         NOW THEREFORE,  in consideration of the premises and mutual  agreements
contained herein and for other good and valuable  consideration  the receipt and
sufficiency of which are hereby acknowledged, the parties hereto hereby agree as
follows:


                                    ARTICLE I

                         AMENDMENTS TO MERGER AGREEMENT

         1.1  References to the  distribution  of shares of Shared  Technologies
Cellular Inc.  shall be deleted from  sections  5.7(b) and 7.1(c) and in Section
5.5 of the Disclosure Statement.

         1.2 Section 6.19 of the Merger  Agreement is hereby amended by deleting
the provisions of clause (ii) thereof and by inserting therefor the following:


         "(ii) all material Taxes of Fairchild and its  subsidiaries  in respect
         of  the  pre-Merger   period   (including  but  not  limited  to  Taxes
         attributable to the Fairchild Reorganization) have been paid in full to
         the proper authorities, other than such Taxes as are being contested in
         good faith by appropriate  proceedings  and/or are adequately  reserved
         for in accordance with generally accepted accounting principles;"


         1.3 The first  sentence of ss.8.1(c) of the Merger  Agreement is hereby
deleted in its entirety.




         1.4 The last  sentence of ss.8.2(a)  of the Merger  Agreement is hereby
deleted in its entirety and replaced with the following:

         "Shared  Technologies shall cause Shared  Technologies  Cellular,  Inc.
         ("STCI") to enter into an agreement  preventing  STCI from competing in
         the telecommunications systems and service business."

         1.5 Section 9.1(f) shall be amended to state "43.5" in place of "47.5".

         1.6  Section  9.1  shall  be  amended  to  replace  the  references  to
"Recapitalization" with "Reorganization."
         
         1.7 Section 9.2(d) of the Merger  Agreement and Schedule  9.2(d) of the
Merger Agreement shall be deleted in their entirety.

         1.8  Schedule  9.2(e) shall be amended by adding to the end thereof the
following:

         "(h) Article III,  Section 20 shall be amended to include the following
         language at the end of such section:

         '; provided that in no event  shall the board authorize or permit to be
         issued any  preferred  or special class of shares which are entitled to
         more than one vote per share or  authorize  or permit to be issued  any
         additional  shares of the  Corporation's  Series C Preferred  Stock, in
         each case without the affirmative vote of 80% of the directors.' "

         1.9 Section  9.2(i) is hereby deleted in its entirety and replaced with
the following:

         "STCI  shall have  executed a  non-competition  agreement  with  Shared
         Technologies in form and substance satisfactory to Fairchild."

         1.10 The "and" at the end of ss.9.3(d) of the Merger Agreement shall be
deleted.

         1.11 The  following is added as new  ss.9.3(e) of the Merger  Agreement
and existing Section 9.3(e) of the Merger Agreement is renumbered as ss.9.3(f):

                  "(e)  TFC  and  RHI  shall  have  entered  into a Tax  Sharing
         Agreement with Shared Technologies in the form of Exhibit E hereto; and

         1.12 The reference to the entities "D-M-E, Inc." and B-3 and "Fairchild
Fasteners, Inc." in ss.9.3(f) (formerly ss.9.3(e)) of the Merger Agreement shall
be deleted  and  replaced  with the  entity  "Fairchild  Holding  Corp." and the
reference to "B-1, B-2 and B-3" shall be replaced by "B-1 and B-2."


         1.13 Section 10.1(c) shall be deleted in its entirety and replaced with
the following: 

         "by either  Fairchild or Shared  Technologies if the Effective Time has
         not  occurred on or prior to March 8, 1996 or such other date,  if any,
         as  Fairchild  or Shared  Technologies  shall  agree  upon,  unless the
         absence  of such  occurrence  shall be due to the  failure of the party
         seeking to terminate this Agreement (or its subsidiaries or affiliates)
         to perform in all material  respects each of its obligations under this
         Agreement  required to be performed by it at or prior to the  Effective
         Time."


                                      -2-


                                   ARTICLE II

                    AMENDMENTS TO INDEMNIFICATION AGREEMENTS
                             (EXHIBITS B-1 through B-3)

         2.1 The first  sentence of Section 1 of the  Indemnification  Agreement
set forth as Exhibit B-1 to the Merger Agreement is hereby amended by adding the
clause "and  including all Taxes  (including but not limited to Taxes related to
the Fairchild  Reorganization)"  after the first reference to "Merger Agreement"
therein.

         2.2 The first  sentence of Section 1 of the  Indemnification  Agreement
set forth as Exhibit B-2 to the Merger Agreement is hereby amended by adding the
clause "and  including all Taxes  (including but not limited to Taxes related to
the  Fairchild  Reorganization)"  after  the  reference  to  "Merger  Agreement"
therein.

         2.3   All   references   to   "Fairchild   Recapitalization"   in   the
Indemnification  Agreements  set  forth as  Exhibits  B-1 and B-2 to the  Merger
Agreement  are hereby  deleted and  replaced  with the defined  term  "Fairchild
Reorganization."

         2.4 All  references to the entity  "Fairchild  Fasteners,  Inc." in the
Indemnification  Agreement set forth as Exhibit B-2 to the Merger  Agreement are
hereby deleted and replaced with the entity  "Fairchild  Holding  Corp." and all
references to the defined term "Fasteners" in the Indemnification  Agreement set
forth as Exhibit B-2 to the Merger  Agreement  are hereby  deleted and  replaced
with the defined term "FHC".

         2.5  All   references   to  "Shared   Technologies"   in  ss.1  of  the
Indemnification  Agreements set forth as Exhibits B-1 and B-2 shall include, and
shall be deemed to include for all purposes set forth in ss.1, all  subsidiaries
of Shared Techologies Inc.

         2.6 Exhibit B-3 shall be deleted in its entirety.


                                   ARTICLE III
                         AMENDMENTS TO PLEDGE AGREEMENT
                                  (EXHIBIT C)

         3.1 The  Pledge  Agreement  as set  forth as  Exhibit  C to the  Merger
Agreement is amended by deleting all  references to "D-M-E Inc." and  "Fairchild
Fasteners, Inc." and substituting therefor "Fairchild Holding Corp."


                                  ARTICLE IV

                       AMENDMENTS TO TAX SHARING AGREEMENT
                                   (EXHIBIT E)

         4.1 The Tax Sharing  Agreement  as set forth as Exhibit E to the Merger
Agreement is hereby deleted and the Tax Sharing  Agreement as attached hereto as
Exhibit E (Restated) is substituted therefor.

                                   ARTICLE V

                        PROVISIONS OF GENERAL APPLICATION

         5.1 Except as otherwise expressly provided by this First Amendment, all
of  the  terms,  conditions  and  provisions  to  the  Merger  Agreement  remain
unaltered.  The  Merger  Agreement  and this First  Amendment  shall be read and
construed as one agreement.

                                      -3-


         5.2 If any of the terms of this First  Amendment  shall conflict in any
respect with any of the terms of the Merger  Agreement,  the terms of this First
Amendment shall be controlling.

 
         IN WITNESS WHEREOF, the parties hereto have caused this First Amendment
to be  executed  by their duly  authorized  officers  all as of the day and year
first above written.

SHARED TECHNOLOGIES INC.                         THE FAIRCHILD CORPORATION


By:/s/ Vincent DiVincenzo                         By:/s/ Donald E. Miller
   ----------------------                            --------------------
   Vincent DiVincenzo                                Donald E. Miller
   Senior Vice President-                            Senior Vice President
   Finance and Administration,
   Treasurer and Chief Financial 
   Officer   


FAIRCHILD INDUSTRIES, INC.                        RHI HOLDINGS, INC.


By:/s/ Donald E. Miller                           By:/s/ Donald E. Miller
   --------------------                              --------------------
   Donald E. Miller                                  Donald E. Miller  
   Vice President                                    Vice President    
                                                     




ACCEPTED AND AGREED TO BY:

FAIRCHILD HOLDING CORP.

By:/s/ Donald E. Miller 
   -------------------- 
   Donald E. Miller     
   Vice President  
                                           -4-