Boeing has successfully completed an expansion of the U.S. Ground-Based Midcourse Defense (GMD) system at Fort Greely, Alaska, adding 20 new missile silos to the site. This upgrade increases the number of silos from 40 to 60, although the newly constructed silos have yet to be filled with interceptors.

Boeing expands missile defence capability with additional silos at Fort Greely

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oeing has successfully completed an expansion of the US Ground-Based Midcourse Defense (GMD) system at Fort Greely, Alaska, adding 20 new missile silos to the site.