The Boeing Ground Based Midcourse Defense (GMD) program team and the Missile Defense Agency emplaced the ninth GMD interceptor in its underground silo at Fort Greely, Alaska on Sept. 18.

The operation involved the use of a special crane to lower the interceptor into the silo. This is the seventh interceptor emplaced at the Fort Greely Site. Two interceptors also were emplaced at the GMD Site at Vandenberg Air Force Base, Calif., in 2004.

The GMD system consists of integrated ground-based interceptors, a variety of sensors and an expansive battle management command, control and communications network, capable of protecting the homeland from a limited long-range ballistic missile attack.

“The continued emplacement of interceptors at Fort Greely expands our missile defense capability and further expands the protection of the nation against the ballistic missile threat,” said Missile Defense Systems vice president and general manager Pat Shanahan.

“GMD is one of the most complex programs this country has ever undertaken and our steady progress increases the flexibility and reach of this true system-of-systems.”