Weather delayed the takeoff twenty minutes. At 6:10 A.M. the launch began: first the fighters, then the horizontal bombers, dive-bombers, and torpedo planes—183 in all. By 6:20 they were in battle formation bound for Oahu. One hour later, Nagumo launched the second attack wave, mostly horizontal bombers and dive-bombers. Within ninety minutes of the first wave’s initial takeoff, a formidable fleet of 350 planes was homing in on its targets at Pearl Harbor, Hickam and Wheeler Fields, and Kaneohe Air Station.
