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L-3 MAPPS to Deliver New Reactor Model for South Texas Project Simulator

Montréal, October 7, 2008 - L-3 MAPPS announced that the STP Nuclear Operating Company (STPNOC) has placed an order to replace the reactor core model for the Unit 1 and 2 South Texas Project Simulator. The replacement model will be used for operator training and is scheduled to be in service at the end of 2008.

STPNOC was L-3 MAPPS' first customer for a major simulator replacement project awarded in 1991. The customer was also the first to incorporate end-to-end replacement of software models in its simulator, using L-3 MAPPS' ROSE® environment (now Orchid® Modeling Environment).

“The L-3 simulation platform has provided us with reliable service for many years,” said Joseph Brodsky, simulator supervisor at South Texas Project Electric Generating Station. “As we expand our generating capacity at STP, we look to L-3 MAPPS for continued support.”

“The South Texas Project Simulator is one of the most advanced nuclear power plant simulators in the U.S.,” said Michael Chatlani, vice president of marketing & sales for L-3 MAPPS Power Systems and Simulation. “We are pleased to provide the replacement reactor core model for the simulator and to continue our role as a reliable service provider for STPNOC.”

The new real-time reactor core model, based on the Nodal Expansion Method (NEM), will be generated with L-3 MAPPS’ Orchid® Core Builder software. With NEM, each node of the reactor core model is represented by a fourth-order polynomial, providing a highly accurate representation of the flux in the reactor core. Orchid® Core Builder will also be delivered to STPNOC for adapting the core model to incorporate plant fuel cycle updates, together with L-3 MAPPS’ initial condition (IC) transfer mechanism to automate and ease the process of transferring ICs from one fuel burn-up point to the next.

South Texas Project is located approximately 90 miles southwest of Houston near Bay City. The plant is managed by the STP Nuclear Operating Company and owned by Austin Energy, CPS Energy and NRG Texas. South Texas Project's twin reactors went online in August 1988 and June 1989, respectively. The South Texas Project Electric Generating Station is one of the newest and largest nuclear power plants in the country. STP's two reactors produce 2,700 megawatts of electricity, enough for more than one million homes and businesses in south central Texas. STP will be the site of one of the first new nuclear power plants built in the United States in nearly three decades. Each of the new units will hold a 1,350-megawatt Advanced Boiling Water Reactor (ABWR), the latest advancement in a plant design with a half-century history of safe and reliable operations worldwide.

L-3 MAPPS has over 20 years of experience in pioneering technological advances in the marine automation field and over 30 years of experience in delivering high-fidelity power plant simulation to leading utilities worldwide. In addition, the company has more than three decades of expertise in supplying plant computer systems for Canadian heavy water reactors. L-3 MAPPS also provides targeted controls and simulation solutions to the space sector.

To learn more about L-3 MAPPS, please visit the company’s Web site at www.L-3com.com/MAPPS.

Headquartered in New York City, L-3 Communications employs over 64,000 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 2007 sales of $14 billion.

To learn more about L-3 Communications, please visit the company's web site at www.L-3com.com.

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Except for historical information contained herein, the matters set forth in this news release are forward-looking 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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