were formed around the globe under the operational control of local commanders. While training, techniques and equipment varied, one rule was constant: "Rescue forces must presume survivors in each crash until proved otherwise." Search and rescue of downed aviators in the continental United States fell primarily to the Civil Air Patrol, a civilian aviation group under the command of the Army Air Corps. The CAP would usually send in ground crews after locating a crash site; however, they would sometimes land small aircraft and they did experiment with parachute rescue teams. With Canada's entry into WWII in 1939, former Canadian fighter ace Wop May was put in charge of training operations and took over command at the No 2 Air Observer School in Edmonton, Alberta. Edmonton was one of the common stops for A-20 Boston, B-26 Marauder and especially B-25 Mitchell bombers being flown to the Soviet Union as part of the lend-lease program. When these aircraft went down, typically due to mechanical or navigational problems, the crew often survived only to die attempting to make it out of the bush. May's school was often asked to supply aircraft to search for downed planes, but even when one was spotted there was often little they could do to help. May decided to address this problem. In early 1942 May asked for volunteers from his civilian servicing crew, and about a dozen agreed to join. With basically no equipment, the instruction consisted of "jump and pull" and windage was calculated by throwing an Eaton's catalogue out the door. Early operations were comical, but in early 1943 May sent two volunteers, Owen Hargreaves and Scotty Thompson to the smoke jumpers school in Missoula, Montana to be trained by the U.S. Forest Service. After six weeks they returned home with borrowed steerable equipment to train two other volunteers, Wilfred Rivet and Laurie Poulsom. Soon the unit was conducting operational jumps, and by 1944 May's persistence had paid off and an official para-rescue training program started. For his work, May was awarded a Medal of Freedom with Bronze Palm in 1947 by the USAAF. In the European Theater, there was very little opportunity for ground rescue. Most flights were over enemy-occupied territory, where a landing meant immediate capture. In the UK area of the European Theatre, the British military was at the time creating its own Royal Air Force Mountain Rescue Service which would