Hawkinge at 0950 hrs., each armed with 2 X 120 lb. general purpose (GP) bombs, to support the Calais garrison trapped in the town's Citadel. Over the channel, Plt. Off. Bernard Brown, flying Hector K8111, with gunner LAC R. V. Brown, test-fires his front gun but after a few rounds the muzzle explodes, holing his fuel tank. He jettisons his bombs and attempts to return to Hawkinge, but runs out of fuel and force-lands on Herne Bay golf course. 1 June First Douglas R3D-1 for the U.S. Navy, BuNo 1901, c/n 606, crashes at Mines Field, Los Angeles, California, before delivery. The Navy later acquires the privately owned DC-5 prototype, c/n 411, from William E. Boeing as a replacement. 7 June Edgar James "Cobber" Kain, the RAF's top ace (17 confirmed kills during the Battle of France), due to return to England after a combat tour in France this date, is seen off from the airfield at Échemines by squadron mates who bid him farewell as he takes off in his Hurricane to fly to Le Mans to collect his kit. Unexpectedly, Kain begins a "beat-up" of the airfield, performing a series of low level aerobatics in Hawker Hurricane Mk. I, L1826. Commencing a series of "flick" rolls, on his third roll, the ace misjudges his altitude and hits the ground heavily in a level attitude. Kain dies when he is pitched out of the cockpit, striking the ground 27 m in front of the exploding Hurricane. Kain is buried in Choloy Military Cemetery. 10 June An ex-U.S. Navy Curtiss SBC-4 Helldiver being flown from the Curtiss plant at Buffalo to an intermediate stop at Albany, New York, crashes in bad weather near Mariaville Lake late this date, killing pilot Allan B. Lullman, of St. Louis. The airframe, one of 50 slated for delivery to France, was en route to Canada for overseas shipment out of Halifax aboard the French aircraft carrier . The fall of France before delivery diverts Béarn to Forte du France, Martinique, Lesser Antilles, where she rides out the first part of the war. The 112 aircraft she carries are put ashore where they go to ruin. 17 June Two twin-engine Douglas B-18A Bolo bombers, 37-576, piloted by 1st Lt. P. Burlingame, and 37-583, flown by 2d Lt. R. M. Bylander, of the 9th Bomb Group, were flying out of Mitchel Field, New York, on a