Jacobs Joint Venture Selected as Operating Contractor for the U.S. Air Force's Arnold Engineering Development Center.

Business Editors

TULLAHOMA, Tenn.--(BUSINESS WIRE)--June 30, 2003

Jacobs Engineering Group Inc. (NYSE:JEC) announced today that a subsidiary company, in joint venture with Computer Sciences Corporation (CSC) and General Physics, has been selected by the U.S. Air Force to provide operations, maintenance, and information management support to the Arnold Engineering Development Center (AEDC) at Arnold Air Force Base, Tenn., and White Oak, Md. Jacobs is the managing partner of the Aerospace Testing Alliance (ATA) joint venture.

Officials estimate the contract value at $2.7 billion over a 12-year period, which includes all options. The contract begins on October 1, 2003, and involves managing a workforce of more than 2,000 personnel who support all aspects of AEDC operations.

In making the announcement, Jacobs President Craig Martin stated, "We feel privileged to continue our relationship with the Air Force at AEDC. AEDC is our nation's premier test and evaluation center; its work is essential to continued air and space dominance. We are honored to support the strategic goals of the Air Force and Department of Defense and to serve the Center's long-term interests."

AEDC is the most advanced and largest complex of flight simulation test facilities in the world. The center includes 58 aerodynamic and propulsion wind tunnels, rocket and turbine engine test cells, space environmental chambers, arc heaters, ballistic ranges, and other specialized units worth more than $7 billion. Twenty-seven of the Center's test units have capabilities unmatched elsewhere in the United States and 14 are unique in the world. The test facilities can simulate flight conditions from sea level to an altitude of 300 miles as well as speeds up to Mach 20. AEDC has tested every high-performance aircraft, missile, and space launch system in use by the Department of Defense today.

Jacobs, CSC, and General Physics have worked together since 1995 as associate contractors at AEDC. As the test operations contractor, Jacobs has been responsible for operating and maintaining AEDC's test facilities and executing aggressive test and research programs critical to U.S. interests. CSC has served as the managing partner of the Aerospace Center Support (ACS) joint venture, with responsibility for providing mission support at AEDC. General Physics has served as a member of the ACS joint venture. The new joint venture brings Jacobs, CSC, and General Physics together to offer a comprehensive suite of services under a single contract.

Jacobs, with over 35,000 employees and revenues approaching $5.0 billion, provides technical, professional, and construction services globally.

Any statements made in this release that are not based on historical fact are forward-looking statements. Any forward-looking statements made in this release represent management's best judgement as to what may occur in the future. However, Jacobs' actual outcome and results are not guaranteed and are subject to certain risks, uncertainties and assumptions ("Future Factors"), and may differ materially from what is expressed. For a description of Future Factors that could cause actual results to differ materially from such forward-looking statements, see the discussion under the section "Forward-Looking Statements" included in Management's Discussion and Analysis filed as part of Exhibit 13 to the Company's 2002 Annual Report on Form 10-K.