29 firms win Alliant awards.

Three former small disadvantaged businesses are among 29 large companies selected for GSA's $50 billion Alliant governmentwide acquisition contract.

GSA said 66 companies submitted proposals. Deputy Administrator David Bibb described the winners as "world-class providers."

GSA officials said the companion Alliant Small Business GWAC will be awarded by the end of the calendar year. It is the largest set-aside in history, worth up to $15 billion over 10 years. The agency has said as many as 60 companies will win places on the contract.

Awardees in the large business category are:

Accenture National Security Ser vices LLC

Advanced Management Technology Inc.

Alion Science and Technology Corp.

AT&T Government Solutions

BAE Systems Information Technology

BearingPoint Inc.

Booz Alien Hamilton Inc.

CACI Inc. Federal

Computer Sciences Corp.

Dynamic Research Corp.

Electronic Data Systems Corp.

General Dyamics One Source LLC

Harris Corp.

Indus Corp.

International Business Machines

ITS Corp.

L-3 Communications Titan Corp.

Lockheed Martin Integrated Systems, Inc.

ManTech Advanced Systems International, Inc.

Modern Technologies, Inc.

NCI Information Systems, Inc.

QSS Group, Inc.

Raytheon Company

RS Information Systems, Inc.

Science Applications International Corp.

SI International Inc.

Systems Research and Applications Corp.

TASC, Inc. (Northrop Grumman)

Unisys Corp.