Contact: Theresa Taft
Public Relations
L-3 Security & Detection Systems
Theresa.Taft@L-3com.com 
781-939-3806

FOR IMMEDIATE RELEASE

L-3 Security & Detection Systems Introduces New Ultra-Compact High-Performance PX™ 5.3 X-ray Imaging System

WOBURN, Mass., September 21, 2009 – L-3 Security & Detection Systems today introduced the new
ultra-compact, high-performance PX 5.3 X-ray inspection system at the American Society of
Industrial Security (ASIS) trade show (Booth #847) in Anaheim, Calif. The PX 5.3 offers
outstanding imaging performance where space is at a premium, scaled to fit through standard
doorways for use in checkpoints and mail rooms in schools, office buildings, courthouses,
correctional institutions and cruise ships among others. The system screens small to mediumsized
objects for multiple threats, including weapons, drugs, explosives and other contraband.
“The PX 5.3 fills a critical need in the marketplace for a compact and mobile X-ray inspection
system that is rugged, reliable and affordable and offers unparalleled imaging,” said Thomas M.
Ripp, president of L-3 Security & Detection Systems.
The PX 5.3 is the newest member of L-3’s premium line of high-throughput, fully networkable
X-ray security systems. The system offers a full complement of powerful image analysis tools
for optimum decision making. L-3’s dual-energy imaging enables both high penetration and
superior discrimination between organic and inorganic materials and metallic objects. The
PX 5.3 is also highly configurable with a full set of options and accessories to meet a wide range
of customer environments.

News
About L-3 Security & Detection Systems
With a broad range of systems and technology, and an installed base of more than 20,000 systems worldwide,
L-3 Security & Detection Systems offers screening technologies for numerous security applications that
include: aviation systems for hold-baggage explosives detection, oversized baggage, and checkpoint screening;
cargo and air freight screening; port and border inspection; and facility protection. L-3 Security & Detection
Systems’ customer base includes major airlines, airports, numerous government agencies around the world
(including the U.S. Department of Homeland Security, U.S. Federal Protective Service, U.S. Customs and
Border Protection, U.S. Department of State, and U.S. Department of Agriculture) and international authorities
throughout Europe, the Middle East, Africa, Asia and Latin America. To learn more about L-3
Communications Security & Detection Systems, please visit the company's website at
www.L-3com.com/SDS.

About L-3 Communications
Headquartered in New York City, L-3 Communications employs over 66,000 people worldwide and is a prime
contractor in aircraft modernization and maintenance, C3ISR (Command, Control, Communications,
Intelligence, Surveillance and Reconnaissance) systems and government services. L-3 is also a leading
provider of high technology products, subsystems and systems. The company reported 2008 sales of
$14.9 billion. To learn more about L-3, please visit the company's Web site at www.L-3com.com.
Safe Harbor Statement Under the Private Securities Litigation Reform Act of 1995
Except for historical information contained herein, the matters set forth in this news release are forwardlooking
statements. Statements that are predictive in nature, that depend upon or refer to events or conditions
or that include words such as "expects," "anticipates," "intends," "plans," "believes," "estimates," "will,"
"could" and similar expressions are forward-looking statements. The forward-looking statements set forth
above involve a number of risks and uncertainties that could cause actual results to differ materially from any
such statement, including the risks and uncertainties discussed in the company's Safe Harbor Compliance
Statement for Forward-looking Statements included in the company's recent filings, including Forms 10-K and
10-Q, with the Securities and Exchange Commission. The forward-looking statements speak only as of the
date made, and the company undertakes no obligation to update these forward-looking statements.

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