Fort Greely is a United States Army launch site for anti-ballistic missiles located about 100 miles (160 km) southeast of Fairbanks, Alaska. It is also the home of the Cold Regions Test Center (CRTC), as Fort Greely is one of the coldest areas in Alaska, and can accommodate cold, extreme-cold, and temperate-weather tests depending on the season. It is named in honor of Major General Adolphus Greely.

The Ground-Based Interceptor (GBI) is the anti-ballistic missile component of the United States' Ground-Based Midcourse Defense (GMD) system.