ANAHEIM, CA - March 31, 2003 Interstate Electronics Corporation (IEC) a wholly owned subsidiary of L-3 Communications Corporation (NYSE:LLL), announced it has been awarded a contract with Lockheed Martin to provide TruTrak Selected Availability Anti Spoofing Module (SAASM) GPS receivers, over a one year period for the Wind Corrected Munitions Dispenser Program. The addition of a GPS receiver will enhance the current fuzing process during the deployment of munitions dispensers.

The IEC TruTrak receiver is a compact robust SAASM-based GPS unit, developed for advanced weapons systems. The TruTrak receiver consists of a SAASM module, radio frequency (RF) down converter and I/O logic. The XFACTOR SAASM module is a secure tamper-resistant, multi-chip module that decodes the Department of Defense GPS Precise Positioning Service Signal.

The Wind Corrected Munitions Dispenser (WCMD) is an inexpensive tail-kit that turns existing cluster munitions (CBU-87,-89, and -97) into all-weather precision-guided weapons. By correcting for launch transients, ballistic errors, and winds aloft, Lockheed Martin’s WCMD provides strike aircraft with an accurate pattern lay-down capability for cluster munitions from any operational altitude or weather condition.

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