As a GCI base, the 915th's role was to guide interceptor aircraft toward unidentified intruders picked up on the unit's radar scopes.

In the early 1960s, the USAF relinquished control of the base to the Royal Canadian Air Force (RCAF).

Upon hand-over on 1 October 1961, the operating unit was re-designated 48 Aircraft Control & Warning Squadron and the base became RCAF Station Beausejour.

It would no longer guide interceptors but only look for enemy aircraft, feeding data to the Grand Forks Air Defense Sector SAGE DC-11 Direction Center of the 31st NORAD Region.

This article incorporates public domain material from the Air Force Historical Research Agency