Sequence showing tractor hauling Lindholme supply cartridges to Lancaster aircraft on tarmac, airmen loading cartridges in bomb bay of aircraft, of cartridges in bomb bay, doors closing. Sequence on Lancaster aircraft preparing to take off showing pilot giving "go" sign, "Search and Rescue, Greenwood, NS" on side of aircraft, engines being started, propellers starting to turn, Royal Canadian Air Force ground crew man standing by aircraft, Lancaster aircraft on runway, propellors turning. Shot of two DC-4 aircraft and B-25 taxiing on runway. Side MLS of Lancaster aircraft taxiing.