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ATK Orbus 1A Transition Program Completes Initial Qualification Testing

Sep 29, 2005

Minneapolis, September 29, 2005 – Alliant Techsystems (NYSE: ATK) has completed the first phase of qualification testing of the Orbus 1A solid rocket motor used as the second- and third-stage for the U.S. Missile Defense Agency’s Boost Vehicle-Plus (BV+) interceptor developed by Lockheed Martin (NYSE: LMCO).

The Orbus 1A motor was successfully tested on September 22. Preliminary results indicate that the motor met all pretest performance requirements. The static test was performed at ATK’s Elkton, Md., facility a week ahead of schedule.

In 2004, Lockheed Martin selected ATK as its supplier for BV+ second- and third-stage solid rocket motors. A second motor will be tested in the coming months to complete qualification prior to commencing Orbus 1A production. ATK also produces the GEM-40VN motor as the first stage of the BV+ interceptor, a component of the Ground-based Midcourse Defense (GMD) system for which The Boeing Company is prime contractor. One of two booster systems for the GMD system, BV+ has not been deployed on operational missiles yet.

ATK is a $3.1 billion advanced weapon and space systems company employing approximately 14,500 people in 23 states. News and information can be found on the Internet at

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