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Boeing Completes GPS IIF Integrated Baseline Review

ST LOUIS, June 23, 2003 - Boeing [NYSE: BA] announced today that in
partnership with the U.S. Air Force, it has recently completed the
Integrated Baseline Review, a significant Global Positioning System
(GPS) control segment milestone.

"The control segment is vital to the continuous operation of the GPS
constellation," said Mike Rizzo, director of Navigation Systems for
Boeing Air Force Systems. "The Integrated Baseline Review milestone
confirms that Boeing is leading a robust, stable and executable
program." 

Boeing is responsible for the development of the new GPS operational
control segment, which will include a distributed architecture, and
extensive use of modernized hardware and software. This will
facilitate additional support for the modernization program for both
the GPS IIR and IIF series of satellites. Additionally, Boeing is
responsible for sustainment of the existing operational control
segment, monitor station, ground antenna upgrades and launch anomaly
resolution systems. 

Established by the Air Force in 1999, the GPS Control Segment,
sometimes referred to as the Single Prime Initiative, is led by
Boeing and supported by two key teammates, Lockheed Martin and the
Harris Corporation. Modernization of the entire GPS ground system
architecture is designed to reduce operator workload and operational
costs. In addition, proactive activities initiated by Boeing, have
allowed the restructuring of elements designed to mitigate risks for
the critical first IIF launch, now slated for mid-2006.

Under a contract awarded in September 2002, Boeing is currently
building the first three GPS IIF satellites, with a potential total
of up to 12 satellites. Designed for flexibility and growth, the IIF
satellites will provide new capabilities, including including
improved anti-jam, increased accuracy, higher integrity and critical
secure Operational Military codes. 

The GPS program is managed by a Joint Program Office at the U.S. Air
Force's Space and Missile Systems Center, Los Angeles Air Force Base,
Calif., and by Boeing Air Force Systems, Long Beach, Calif., a
business unit of Boeing Integrated Defense Systems.

A unit of The Boeing Company, Integrated Defense Systems is one the
world's largest space and defense businesses. Headquartered in St.
Louis, Boeing Integrated Defense Systems is a $25 billion business.
It provides systems solutions to its global military, government and
commercial customers. It is a leading provider of intelligence,
surveillance and reconnaissance; the world's largest military
aircraft manufacturer; the world's largest satellite manufacturer and
a leading provider of space-based communications; the primary systems
integrator for U.S. missile defense; NASA's largest contractor; and a
global leader in launch services. 

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Contacts:
Erik Simonsen
Air Force Systems
562-496-5692

Madonna Walsh
IDS News Bureau
314-234-1362

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