Agency:.Produced by the National Film Board of Canada for the Canadian Department of National Defence.

Director, John Howe ; script, John Howe ; producer, Nicholas Balla ; photography, Lorne C. Batchelor, Jean Roy, Peter Kelly ; sound, Marcel Carrière ; editing, Douglas Tunstell ; sound editing, Brian Keene ; re-recording, Clarke Daprato ; music, Robert Fleming.

Recorded 1957.

A highly integrated defense network is necessary to give adequate protection to a country like Canada. This film shows how the Royal Canadian Air Force fulfills its primary role of maintaining constant vigilance and providing a blanket of aerial defense. It illustrates the combat readiness and shows how, in the event of an attack, warnings would be flashed to National Defence headquarters in eastern Canada and to Continental Defense headquarters in the United States.

Mode of access: World Wide Web.

Description based on online resource; title from title screen (National Film Board of Canada, viewed 2023-08-10).