Awaiting authentication of the submarine sinking report, Ramsey stood near a window of the Ford Island command center, watching the color guard prepare to hoist the flag. At about 0755 he heard the scream of a plane diving over the station, turned to Ballinger, and said, "Dick, get that fellow's number, for I want to report him for about sixteen violations of the course and safety regulations." As the plane went into its dive, each man looked out separate windows to follow its course. "Dick, did you get his number?" Ramsey asked. "No, but I think it was a squadron commander's plane because I saw a band of red on it," replied Ballinger. "Check with the squadrons and find out which squadron commanders' planes are in the air," Ramsey ordered. That very instant Ballinger reported, "I saw something black fall out of that plane when it completed its dive." At precisely 0757 an explosion reverberated from the hangar area. Ramsey's face changed in swift comprehension. "Never mind the squadron commander, Dick," he exclaimed. "That was a Jap plane and a delayed action bomb." The words scarcely out of his mouth, Ramsey raced across the corridor to the radio room and ordered all radiomen on duty to send out in plain English""AIR RAID, PEARL HARBOR. THIS IS NOT DRILL!" Thus, at exactly 0758 one of the most famous radio messages ever dispatched clicked over the airwaves.