The RCAF spitfire wing's operations can be quickly switched from one sector of the front to another, for the Intelligence map library can promptly produce maps of any new area. Oshawa Squadron Pilot, P/O Rex Tapley of Hamilton, Ont., finds that LAC Jack O'Malley, Falconbridge, Ont., has a store of some 6,000 aerial maps covering every part of the western front. Map room is a canvas-walled "verandah " whose roof roof floor flaps fold up into side of Intelligence-Operations van when wing moves to a new base. March 13, 1945. (Photo by RCAF Photo).