SACRAMENTO, Calif., May 28, 2008 – Aerojet, a GenCorp (NYSE: GY) company, provided the advanced Solid Rocket Motor (SRM) propulsion that propelled Lockheed Martin Missiles and Fire Control’s (LMMFC) successful PATRIOT Advanced Capability-3 (PAC-3) Missile Segment Enhancement (MSE) Control Test Flight B (CTF-B). Launched from White Sands Missile Range (WSMR) in New Mexico, the PAC-3 MSE flight builds on a series of recent ground tests of SRM performance at the most stressing operating temperature conditions.

The PAC-3 MSE spiral development program is being conducted by the U.S. Army’s Lower Tier Project Office (LTPO) in Huntsville, Alabama. The program will significantly expand the capability of the already battle-proven PAC-3 interceptor against threat advancements. The MSE propulsion system is an advanced two-pulse motor providing energy management as a key element of the expanded interceptor capability.

Aerojet also provides 180 Attitude Control Motors (ACMs) used on each PAC-3 and PAC-3 MSE interceptor for fly-out maneuvering and hit-to-kill agility, and an advanced Lethality Enhancer (LE) for the MSE interceptor. “The high-performance MSE pulse motor represents a significant propulsion technical advancement. We are pleased to continue our role on the Army LTPO and Lockheed Martin team working to provide our warfighters with this important capability enhancement,” said Aerojet’s Executive Director for Tactical Systems, John Myers.

Aerojet is a world-recognized aerospace and defense leader principally serving the missile and space propulsion, defense and armaments markets. GenCorp is a leading technology-based manufacturer of aerospace and defense products and systems with a real estate segment that includes activities related to the entitlement, sale, and leasing of the company’s excess real estate assets. Additional information about Aerojet and GenCorp can be obtained by visiting the companies’ Web sites at and