Exhibit 24
POWER OF ATTORNEY

KNOW BY ALL PERSONS BY THESE PRESENT:  That the undersigned hereby constitutes
and appoints each of Aloma Avery, Laura Dalupan, Karen Garsson, Nancy Walker,
and Douglas Scott, signing singly, as his or her true and lawful
attorney-in-fact to:

(1) execute for and on behalf of the undersigned, in the
undersigned's capacity as an executive officer and/or director of Science
Applications International Corporation ("SAIC"), Forms 3, 4 and 5 in accordance
with Section 16(a) of the Securities and Exchange Act of 1934 and the rules
thereunder, as the same may be amended from time to time;

(2) do and perform any and all acts for and on behalf of the undersigned
which may be necessary or desirable to complete the execution of any such
Form 3, 4 or 5 and the timely filing of such Form with the United States
Securities and Exchange Commission and any other authority; and

(3) take any other action of any type whatsoever with the foregoing which,
in the opinion of such attorney-in-fact, may be of benefit to, in the best
interest of, or legally required by, the undersigned, it being understood
that the documents executed by such attorney-in-fact on behalf of the
undersigned pursuant to this Power of Attorney shall be in such form and
shall contain such terms and conditions as such attorney-in-fact may approve
in his or her discretion.

The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform each and every act and thing whatsoever requisite,
necessary and proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might
or could do if personally present, with full power of substitution or
revocation, hereby ratifying and confirming all that such attorney-in-fact, or
his or her substitute or substitutes, shall lawfully do or cause to be done by
virtue of this Power of Attorney and the rights and powers herein granted.

The undersigned acknowledges that the foregoing attorney-in-fact, in serving in
such capacity at the request of the undersigned, are not assuming any of the
undersigned's responsibilities to comply with Section 16 of the Securities and
Exchange Act of 1934 and the rules thereunder, as the same may be amended from
time to time.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to
the undersigned's holdings of and transactions in securities issued by SAIC,
unless earlier revoked by the undersigned in a signed writing to the foregoing
attorneys-in-fact.

The undersigned hereby revokes each and every power of attorney relating to the
powers and rights granted herein that the undersigned has signed prior to the
date hereof.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 8th day of November, 2005.

/s/ LAWRENCE B. PRIOR III
Signature:  Lawrence B. Prior III