Sky Sentries (Eye Witness No. 22): TILT UP from airmen entering building to sign "RCAF 401 City of Westmount Fighter Squadron". Various shots of training in classrooms, in laboratories, of airmen learning. AIR TO AIR SHOT, MLS of Lancaster bomber. Sequence on scramble showing pilots racing to Vampire jets, taking-off. AIR TO AIR SHOT of jets during flight, during intercept, intercut with Lancaster in flight.