The group was formed in 1957 when ADC assumed responsibility for air defense of Newfoundland from Northeast Air Command and controlled a fighter-interceptor squadron at Harmon and two squadron operating radars at dispersed locations.

Assigned the 61st Fighter-Interceptor Squadron (FIS), flying Northrop F-89 Scorpion aircraft,[3] which was already stationed at Harmon, and two remote Aircraft Control & Warning Squadrons as its operational elements.

The 4731st provided air defense of northeast North America.

[citation needed] The group was discontinued in 1960[1] and subordinate units assigned to Goose Air Defense Sector.

Assignments Components Stations This article incorporates public domain material from the Air Force Historical Research Agency Further Reading