ANAHEIM, CA - June, 2003 Interstate Electronics Corporation (IEC), a wholly owned subsidiary of L-3 Communications Corporation (NYSE:LLL), announced it has been awarded a 21 month ten million dollar contract by the Air Force Space and Missile System Center, at Los Angeles Air Force Base. The program research and development announcement (PRDA) prime contract is designed to reduce the risk and advance technology required for the future development of Modernized Military Global Positioning System User Equipment (MUE).

The PRDA will provide a better understanding to industry and government of the technical specification and the risk regarding the implementation, certification, integration and operation of the MUE security architecture. Also, the ability to design, develop and produce MUE that can effectively detect, acquire, track and process M-Code and M-Code navigation data under stressed and nominal conditions. And finally, the feasibility and advisability of implementing Y-Code signal in MUE.

The effort is structured around three studies: security, alternate receiver configuration, and a test receiver that will be used to validate and reduce the risk of evolving requirements. All three studies require a synergistic approach to ensure security boundaries are protected. Significant emphasis will be put on cost-utility, affordability, risk reduction and interoperability between legacy systems.

About Interstate Electronics Corporation and L-3 Communications:

Based in Anaheim, CA, Interstate Electronics Corporation, a wholly owned subsidiary of L-3 Communications Corporation, has been a long-term supplier of critical test instrumentation and missile tracking systems for the U.S. Navy's Fleet Ballistic Missile (FBM) weapons systems, including the Trident submarine. The Division is ranked as an industry leader in GPS receiver and translator-based products, which are currently in use on multiple aircraft, cruise missiles and precision guided weapons. IEC produces ruggedized displays for both military and industrial applications. IEC also provides secure communications on a quick reaction basis for deployed forces in Eastern Europe. To learn more about IEC, please visit www.iechome.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 .

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.

For more information, contact:
Greg Martz
Marketing Manager
Interstate Electronics Corporation
Phone: (714) 758-4158
Fax: (714) 758-4148
URL: www.iechome.com