AMENDMENT TO DEED OF TRUST NOTE

         This AMENDMENT TO DEED OF TRUST NOTE ("Amendment") is dated as of March
26,  1998 by and  between  James  Roth,  an  individual  ("Mr.  Roth"),  and GRC
International, Inc., a Delaware corporation ("GRC").

         WHEREAS,  James and Marilyn R. Roth (collectively,  "Maker") executed a
Deed of Trust Note dated as of July 9, 1992 in the principal  amount of $230,000
("Note") to the order of GRC International, Inc., a Delaware corporation, or its
successors or assigns ("GRC") or any subsequent holder of the Note ("Payee").

         NOW  THEREFORE  IT IS HEREBY  AGREED,  that on July 1,  1998,  GRC will
forgive one half of the outstanding principal amount of the Note, subject to Mr.
Roth's continued  compliance with his various  agreements through that date. The
remaining  one half of the Note will then  cease to bear  interest,  and will be
forgiven  on July 1,  1999,  subject  to  GRC's  approval  based  on Mr.  Roth's
compliance with his various agreements through that date.


Nothing else is hereby amended.


IN WITNESS  WHEREOF,  the parties  hereto have executed this Amendment as of the
date first set forth above.

ATTEST:                                              GRC INTERNATIONAL, INC.


                                                     By:
- ---------------------------------                         ----------------------
Thomas E. McCabe                                          Joseph R. Wright, Jr.
Sr. Vice President, General Counsel & Sec'y               Chairman of the Board


WITNESS                                              EMPLOYEE


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                                                     James Roth

APPROVED AND RATIFIED BY THE COMPENSATION COMMITTEE OF THE BOARD OF DIRECTORS OF
GRC INTERNATIONAL, INC.


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Leslie B. Disharoon
Chairman, Compensation Committee