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L3 MAPPS TO FURTHER ENHANCE SIMULATOR FOR THE FRENCH INSTITUTE FOR RADIOLOGICAL PROTECTION AND NUCLEAR SAFETY

Montréal, August 11, 2010 – L3 MAPPS announced today that it has been granted a contract extension from the French Institute for Radiological Protection and Nuclear Safety (IRSN) to further update its SOFIA (Simulateur d'Observation du Fonctionnement Incidentel et Accidentel) engineering simulator.

“L3 MAPPS is pleased to continue our business relationship with IRSN," said Michael Chatlani, vice president of marketing & sales for L3 MAPPS Power Systems and Simulation. "For seven years, IRSN has turned to us to meet its demanding simulation needs, and we are proud that our technology and simulation know-how has gained such strong acceptance with a discerning customer.”

The contract extension requires that L3 MAPPS migrate the existing simulations for French-designed reactors CP2 (900 MWe, 3-loop), DPY (1,300 MWe, 4-loop) and N4 (1,450 MWe, 4-loop) to new PC servers running Windows within the Orchid® simulation environment. Each of the simulations benefits from being integrated with CATHARE thermal-hydraulic computer engineering code. In addition, two versions of the Flamanville 3-based EPR™ simulation will be added to the SOFIA simulator. One EPR simulation version is based on L3 MAPPS' real-time ANTHEM™ thermal-hydraulic code, while the other incorporates CATHARE.

IRSN has owned a simulator since 1992. The SOFIA simulator (previously SIPA – simulateur post-accidentel) is used for thermal-hydraulic studies, especially for level 2 probabilistic safety analyses, training in physics and reactor control, and the preparation of national crisis exercise scenarios. Since 2002, IRSN has owned a CP1 (900 MWe, 3-loop) configuration that integrates the CATHARE code and makes the simulation of cold shutdown states possible. In 2003, the IRSN worked with L3 MAPPS to design a solution that integrated CATHARE in L3 MAPPS' ROSE® simulation environment, which resulted in a successful prototype.

CATHARE is a thermal-hydraulic computer engineering code for nuclear power plant safety analysis. The software is the result of nearly three decades of cooperation between engineers of the Commissariat à l'Energie Atomique (CEA), French electricity group EDF, AREVA and the IRSN. The version of the code in use for the simulators is CATHARE 2, version 2.5_1.

L3 MAPPS, a division of L-3 Marine & Power Systems, has nearly 30 years of experience in pioneering technological advances in the marine automation field and nearly 40 years of experience in delivering high-fidelity power plant simulation to leading utilities worldwide. In addition, the company has more than four 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 L3 MAPPS, please visit the company's website at www.L3T.com/MAPPS.

Comprising 25 operating companies, L-3 Marine & Power Systems (L-3 M&PS) is a worldwide leader in maritime automation and control, navigation, communications, dynamic positioning, and power distribution and conditioning for the U.S. Navy, allied foreign navies and commercial customers worldwide. L-3 M&PS also produces full-fidelity simulators for increased operator proficiency, resulting in safe operations for leading international utilities and ship operators. With over 85 locations in 19 countries, L-3 M&PS is a cohesive, global partner with extensive capabilities and a proven track record in delivering the highest level of technology, service and integration. To learn more about L-3 Marine & Power Systems, please visit the company’s website at www.L-3com.com/MPS.

Headquartered in New York City, L-3 employs approximately 51,000 people worldwide and is a prime contractor in C3ISR (Command, Control, Communications, Intelligence, Surveillance and Reconnaissance) systems, platform and logistics solutions, and national security solutions. L-3 is also a leading provider of a broad range of electronic systems used on military and commercial platforms. The company reported 2012 sales of $13.1 billion. To learn more about L-3, please visit the company’s website at www.L3T.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. 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.

EPR is a trademark of AREVA.

Orchid, ROSE and ANTHEM are trademarks of L3 MAPPS Inc. All other products are trademarks of their respective companies.

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MARINE SYSTEMS AND SIMULATION

Naval vessel control systems, land-based and on-board simulators and turnkey training solutions.

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Real-time power plant simulators and simulator modernization for all plant types and CANDU plant computer systems.

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Real-time simulators for robotic systems and satellites to support simulation-based design and operations / maintenance training.