Several shots in decompressing chamber of pilot being fitted with oxygen mask in preparation to undergoing "explosion" decompression. CS of operator of decompression equipment outside the chamber, officer checking pilots' pressure suit ("G" suit). CSs of a barometer showing various degrees of pressure. Interior shots of a parachute being tested. CSs of candle burning. Interior MLS of pilot testing suit connections. CSs of pilot checking oxygen regulator, pilot adjusting mask, pilot putting on helmet. Exterior numerous shots of pilot in cockpit of CF-100 adjusting mask, adjusting and checking his and the aircraft oxygen equipment. MSs in CF-100 giving thump up sign, cockpit top closing. Shots of CF-100 taxiing on runway.