In February 1952, the Air Force announced its plans to build Grand Forks Air Force Base to support Strategic Air Command bombers and tankers as well as Air Defense Command fighter-interceptors.
This sector became operational with the Semi-Automatic Ground Environment sys.
In December 1957, the Air Force activated the Grand Forks Air Defense System of the North American Air Defense Command.
On February 8, 1957, Air Defense Command activated the 486th Fighter Group on Grand Forks Air Force Base.
In February 1952, the Air Force announced its plans to build Grand Forks Air Force Base to support Strategic Air Command bombers and tankers as well as Air Defense Command fighter-interceptors