ACSS SAFETY AVIONIC SYSTEMS SELECTED FOR BOEING 767 TANKER TRANSPORT

Boeing Selects ACSS’s Military Airborne Surveillance System and Mode S/IFF Transponder for Global Tanker Transport Aircraft Program

Contact:
Steve Henden
Manager, Communications
ACSS, an L-3 Communications & Thales Company
623-445-7021

PARIS, June 17, 2003 – ACSS, an L-3 Communications & Thales Company, is pleased to announce that Boeing Integrated Defense Systems has selected MASS™ (Military Airborne Surveillance System) and the XS-950SI Mode S Data Link Transponder with built-in IFF (Identification Friend or Foe) capability for their new Boeing 767 aircraft as part of the Global Tanker Transport Aircraft (GTTA) Program.

“We are proud to be a partner on the Boeing 767 Tanker Transport Program and bring an increased level of safety and situational awareness to military flight operations worldwide,” said Joe Hoffman, ACSS president.

MASS utilizes the same ADS-B (Automatic Dependent Surveillance-Broadcast) technology developed by ACSS for commercial aircraft, adding the unique military capabilities of rendezvous and formation position keeping, as well as ACSS’s proprietary “Encroachment Alert” function. MASS technology was developed as an enhancement to the ACSS TCAS 2000 system currently flying in over 6,000 commercial and military aircraft around the world.

During formation flight, the system works with the Mode S/IFF transponder to identify and distinguish between cooperative member and non-member aircraft. It supports unrestricted formation and rendezvous operations and can be installed on aircraft equipped with the TCAS 2000 and Mode S/IFF via a simple software upgrade. MASS complies with ATC guidelines to work in both military and civil airspace, providing TCAS/ACAS II operations during non-military flights.

The system was successfully demonstrated in May 2002 using a Citation V business jet and a United States Air Force Boeing 707 during an actual formation flight.

ACSS (Aviation Communication & Surveillance Systems), an L-3 Communications & Thales Company, is a leader in safety avionics systems. ACSS products include the TCAS 2000 and TCAS 1500 traffic alert and collision avoidance systems, a family of Mode S transponders, the T²CAS™, a combined traffic and terrain collision avoidance system, and MASS™, an enhanced TCAS system for military operations. More than 9,000 units of ACSS’s TCAS products are operating in commercial, corporate and military aircraft. To learn more about ACSS, please visit the company's web site at www.L-3com.com/acss.

Headquartered in Velizy (France), Thales Avionics, a wholly-owned subsidiary of Thales, is the European leader and world-renowned partner in avionics and cabin electronics and a world leader in professional electronics for civil and defense markets. To learn more about Thales Avionics, please visit the company's web site at www.thales-avionics.com.

Headquartered in New York City, L-3 Communications is a leading merchant supplier of secure communications systems and products, avionics and ocean products, training products, microwave components and telemetry, instrumentation, space and wireless products. Its customers include the Department of Defense, selected U.S. government intelligence agencies, aerospace prime contractors and commercial telecommunications and wireless customers. To learn more about L-3 Communications, please visit the company's web site at www.L-3Com.com.

ACSS (Aviation Communication & Surveillance Systems, LLC), an L-3 Communications & Thales Company, is a leader in safety avionics systems. ACSS products include the TCAS 2000 and TCAS 1500 traffic alert and collision avoidance systems, a family of Mode S transponders and the T²CAS, a combined traffic and terrain collision avoidance system. More than 8,000 units of ACSS' TCAS products are currently operating in commercial, corporate and military aircraft. Thales Avionics is the exclusive sales agent of ACSS products to the Commercial Air Transport market. To learn more about ACSS, please visit the company's web site at www.L-3com.com/acss.

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 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.