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L3 MAPPS TO UPGRADE CALLAWAY SIMULATOR WITH ALTERNATE EMERGENCY POWER SYSTEM MODELS

MONTREAL, July 11, 2011 – L3 MAPPS announced today that it has earned follow-on orders from Ameren Missouri to upgrade the full scope simulator for the Callaway Energy Center in Callaway County, Missouri, USA. One order will provide for the addition of an alternate emergency power system (AEPS) model and in the other order L3 MAPPS will modify the interface between its Orchid® Core Builder and the fuel analysis code used to perform the actual nuclear power plant fuel cycle updates. The AEPS model upgrade is scheduled to be completed in four months and the fuel data input model will be updated in the fourth quarter of 2011.

The AEPS added to the station includes four 2-megawatt diesel generators located 1.5 miles off-site to improve Callaway’s ability to mitigate a station blackout. The AEPS generators provide an alternate source of power during a station blackout that is different from the emergency diesel generators and off-site resources. The off-site diesel back-up systems start up when there is a loss of both safety-related emergency diesel generators and a loss of off-site power. As an enhancement to the simulator, L-3 MAPPS will model the AEPS generators associated switchgear, transformers and connection to the Central Electric Power Cooperative, all with L3 MAPPS’ Orchid Modeling Environment. Invensys’ Wonderware InTouch human-system interface for the AEPS will be emulated with L3 MAPPS’ Orchid Control System.

The interface between Orchid Core Builder and the data generated by the fuel analysis code will also be updated as the Callaway Energy Center transitions from CASMO4/SIMULATE3 to Westinghouse’s Phoenix-P/ANC.

“Since our first order for upgrading the Callaway simulator in 1997, the simulator has been progressively upgraded by L3 MAPPS to the point where the legacy simulator has in effect been replaced and is entirely functioning in L3 MAPPS’ industry-leading Orchid environment,” said Michael Chatlani, vice president of marketing & sales for L3 MAPPS Power Systems and Simulation. “Thanks to the performance gained with L3 MAPPS models, the robust simulation technology and our committed service, we continue to secure add-ons and we greatly value Ameren Missouri’s business.”

Ameren Missouri has been providing electric and gas service for more than a century, serving 1.2 million electric and 126,000 natural gas customers in central and eastern Missouri. The company’s service area covers 63 counties and 500 towns, including the greater St. Louis area. Since 1984, the Callaway plant has been providing safe, clean and affordable electricity. The electricity generated by the Callaway plant is enough to meet the needs of 780,000 average households every year.

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.

Orchid is a trademark 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.

POWER SYSTEMS AND SIMULATION

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

SPACE SYSTEMS AND SIMULATION

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