Several AERIAL SHOTs of Churchill River in winter, including shots of rugged tundra land. Sequence on Dakota aircraft being made ready to take off: MS of man on wing sweeping off snow. CS of men hauling airpressure machine used to heat aircraft engines. CS of man inflating aircraft wheel tire. MS PANs from engine heater to men working on DC-3 Dakota aircraft. LS of Churchill Airport, snow blowing over snowdrifts in foreground. LSs of Dakota aircraft flying over airport. MS PAN from Dakota aircrafts to Noorduyn Norseman being warmed up.