Aerojet to Provide MK 125 Warhead for Standard Missile System

SACRAMENTO, Calif., Jan. 4, 2010 – Aerojet, a GenCorp (NYSE: GY) company, announced that the company has been selected to provide the MK 125 warhead for Raytheon Missile Systems’ family of Standard Missile programs, with deliveries beginning in 2010.

The MK 125 warhead is the lethality mechanism for the SM-2 and SM-6 missile systems. This important missile system provides the U.S. Navy’s fleet long-range protection from aerial threats and ensures the ability of the fleet to safely accomplish its primary mission of force projections wherever and whenever the nation calls. The program management and manufacturing will take place at Aerojet’s modern, low-cost, load assembly and pack facility in Camden, Ark.

Vice President of Tactical Programs, John Myers, said, “The competitive selection of Aerojet to provide this critical warhead is a clear indication that our efforts to cut costs have been effective, while continuing to provide high-quality and on-schedule deliveries. The MK 125 consolidates our position as Raytheon and the U. S. Navy's major energetic systems provider for the SM-2 and SM-6 missiles, complementing our MK 104 and MK 72 propulsion programs.”

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