Lockheed Martin-led team passes key design milestone for next generation military

LOCKHEED MARTIN-LED TEAM PASSES KEY DESIGN MILESTONE FOR NEXT GENERATION
MILITARY COMMUNICATIONS SATELLITE PROGRAM

SUNNYVALE, CALIF., March 17, 2005

The Mobile User Objective System (MUOS) team led by Lockheed Martin [NYSE:
LMT] has successfully completed the System Preliminary Design Review (PDR)
with its customer, the U.S. Navy. The System PDR kicks off a key design and
development phase for the space and ground segments to ensure the system
will meet or exceed the customer's requirements for the next generation
narrowband tactical satellite communications system.

MUOS will provide significantly improved and assured communications for U.S.
mobile warfighters. With the adaptation of state-of-the art 3rd Generation
(3G) mobile technology, the Lockheed Martin design will deliver simultaneous
voice, data and video services as well as the ability to increase capacity
and features over the life of the program. Users of the current Ultra High
Frequency Follow-On (UFO) system will have improved service and complete
interoperability with MUOS to ensure a smooth transition.

More than 200 representatives from the Navy, Department of Defense agencies,
as well as industry teammates General Dynamics C4 Systems, Scottsdale,
Ariz., Boeing Satellite Systems (BSS), El Segundo, Calif., and other system
engineering and technical assistance support contractors, participated in
the three-day review held recently at Lockheed Martin's Sunnyvale facility.
The PDR validated that the MUOS architecture supports the Navy concept of
operations and provides backward compatibility and interoperability with the
UFO system. The first MUOS satellite is scheduled for on-orbit hand over to
the Navy in 2010 along with the entire ground system.

"We are extremely proud to have successfully completed this significant
review in the MUOS program," said Leonard F. Kwiatkowski, vice president and
general manager, Lockheed Martin Military Space Programs. "Working closely
with our Navy customer, the team has taken an important first step towards
providing warfighters the long-sought capability of real-time communications
on the move."

Last year, Lockheed Martin Space Systems, Sunnyvale, Calif. was awarded a
$2.1 billion contract to build the first two satellites and associated
ground control elements by the U.S. Navy. The Navy's Program Executive
Office for Space Systems, Chantilly, Va., and its Communications Satellite
Program Office, San Diego, Calif., are responsible for the MUOS program. The
contract also provides for options on three additional spacecraft. With all
options exercised, the contract for up to five satellites has a total
potential value of $3.26 billion.

Contact:
Steve Tatum, 408-742-7531; e-mail,


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