Seventh Modernized GPS Satellite Built by Lockheed Martin Successfully Launched From...

Seventh Modernized GPS Satellite Built by Lockheed Martin Successfully
Launched From Cape Canaveral

Satellite Includes Demonstration Payload for New Third Civil Signal

CAPE CANAVERAL AIR FORCE STATION, Fla., March 24 /PRNewswire/ -- A Lockheed
Martin (NYSE: LMT)-built modernized Global Positioning System Block IIR (GPS
IIR-M) satellite, equipped with an innovative payload that will provide an
on-orbit demonstration of a third civil signal, was successfully launched
today from Cape Canaveral Air Force Station, Fla.

Designated GPS IIR-20(M), the satellite is the seventh in a line of eight GPS
IIR satellites that Lockheed Martin Navigation Systems, Newtown, Pa., has
modernized for its customer, the Global Positioning Systems Wing, Space and
Missile Systems Center, Los Angeles Air Force Base, Calif.

Modernized GPS IIR satellites include several features that enhance operations
and navigation signal performance for military and civilian GPS users around
the globe. In addition, the IIR-20(M) spacecraft includes a new demonstration
payload that will transmit a third civil signal located on the L5 frequency
(1176.45MHz). The signal will comply with international radio frequency
spectrum requirements.

The incorporation of the demonstration payload on the satellite was completed
one month ahead of schedule and in less than one year after the Air Force
awarded Lockheed Martin a $6-million contract to design, develop and integrate
the payload onto a IIR-M spacecraft already built and in storage. Follow-on
generations of GPS spacecraft will include an operational L5 signal to improve
the accuracy and performance capabilities of the system.

"Working closely with our Air Force partner, and building upon the design
capabilities of the IIR-M space vehicle, the team has developed an innovative,
low-risk, low-cost demonstration payload that will pave the way for the new
operational third civil signal," said Don DeGryse, Lockheed Martin's vice
president of Navigation Systems. "We look forward to a successful
demonstration of this critical capability and setting another modernized GPS
spacecraft into operations as quickly as possible."

Lockheed Martin and its navigation payload provider ITT of Clifton, N.J.
designed and built 21 IIR spacecraft and subsequently modernized eight of
those spacecraft designated Block IIR-M. Each IIR-M satellite includes a
modernized antenna panel that provides increased signal power to receivers on
the ground, two new military signals for improved accuracy, enhanced
encryption and anti-jamming capabilities for the military, and a second civil
signal that will provide users with an open access signal on a different
frequency.

The GPS constellation provides critical situational awareness and precision
weapon guidance for the military and supports a wide range of civil,
scientific and commercial functions - from air traffic control to the Internet
- with precision location and timing information. Air Force Space Command's
2nd Space Operations Squadron (2SOPS), based at Schriever Air Force Base,
Colo., manages and operates the GPS constellation for both civil and military
users.

Headquartered in Bethesda, Md., Lockheed Martin is a global security company
that employs about 146,000 people worldwide and is principally engaged in the
research, design, development, manufacture, integration and sustainment of
advanced technology systems, products and services. The corporation reported
2008 sales of $42.7 billion.

Low- and high-resolution JPEG image files of a GPS IIR-M satellite are
available at:
http://www.lockheedmartin.com/products/GPS/

Media Contact: Steve Tatum, 408-742-7531; e-mail,
Stephen.o.tatum@lmco.com
Michael Friedman, 408-742-3516; e-mail, Michael.1.friedman@lmco.com

SOURCE Lockheed Martin

Steve Tatum, +1-408-742-7531, Stephen.o.tatum@lmco.com, or Michael Friedman,
+1-408-742-3516, Michael.1.friedman@lmco.com, both of Lockheed Martin