Lockheed Martin-Built Trident II D5 Missile Achieves 143 Successful Test Flights

   Lockheed Martin-Built Trident II D5 Missile Achieves 143 Successful Test
                                   Flights

Royal Navy Fleet Ballistic Missile Launched in Test in the Atlantic

PR Newswire

SUNNYVALE, Calif., Oct. 31, 2012

SUNNYVALE, Calif., Oct. 31, 2012 /PRNewswire/ --The U.S. Navy supported the
Oct. 23 launch of a U.K. Royal Navy Trident II D5 Fleet Ballistic Missile
(FBM) built by Lockheed Martin (NYSE: LMT). The unarmed missile was launched
from the submerged Royal Navy submarine HMS Vigilant in the Atlantic Ocean.

The test marked the 143^rd successful test flight of the Trident II D5 missile
since design completion in 1989 – a reliability record unmatched by any other
large ballistic missile or space launch vehicle.

"The Royal Navy and the U.S. Navy continue to demonstrate the readiness and
reliability of this highly capable system, whose mission is to discourage
aggression," said Melanie A. Sloane, vice president of Fleet Ballistic Missile
programs, Lockheed Martin Space Systems Company, the Trident missile prime
contractor. "The cooperation of both governments, supported by industry,
provides a credible submarine-based strategic deterrent."

The test, which was part of a Demonstration and Shakedown Operation that
verified the integrity of the strategic weapon system following an overhaul of
the submarine, was the 10^th consecutive successful Trident II D5 missile test
flight by the U.K. since 1994. The missile was converted into a test
configuration using a test missile kit produced by Lockheed Martin that
contains range safety devices, tracking systems and flight telemetry
instrumentation.

First deployed in 1990, the D5 missile is currently aboard U.S. Navy
OHIO-class and Royal Navy VANGUARD-class submarines. The three-stage,
solid-propellant, inertial-guided ballistic missile can travel a nominal range
of 4,000 nautical miles and carries multiple independently targeted reentry
vehicles.

Lockheed Martin Space Systems has been the U.S. Navy's prime strategic missile
contractor since the inception of the Fleet Ballistic Missile program more
than 50 years ago. Since 1968, Lockheed Martin has provided program support to
the Royal Navy under the terms of the 1963 U.S.-U.K. Polaris Sales Agreement,
which was modified in 1982 to provide for the Trident II D5 ballistic missile
system. Lockheed Martin provides program management and engineering services
for the United Kingdom's Trident missile system through an annual contract
funded by the U.K. Royal Navy, with work performed at facilities in the U.S.
and the U.K.

Lockheed Martin leads the industry in performance and domain expertise in
strategic missile and missile defense systems. Lockheed Martin designs and
produces ballistic missiles, interceptors, target missiles and reentry systems
with unmatched reliability. Lockheed Martin's focus on operational excellence
yields affordable high-quality systems and services.

Headquartered in Bethesda, Md., Lockheed Martin is a global security and
aerospace company that employs about 120,000 people worldwide and is
principally engaged in the research, design, development, manufacture,
integration and sustainment of advanced technology systems, products and
services.The Corporation's net sales for 2011 were $46.5 billion.

Media Contact: Lynn Fisher, 408-742-7606; lynn.m.fisher@lmco.com

For additional information, visit our website:
http://www.lockheedmartin.com/us/products/trident-ii-d5-fleet-ballistic-missile--fbm-.html

U.S. Navy Strategic Systems Programs Distribution Statement A:
Approved for public release; distribution is unlimited.

SOURCE Lockheed Martin

Website: http://www.lockheedmartin.com