Alvin Kernan was an aviation ordnanceman on board the aircraft carriers and the during the war. During that time, he was awarded the Navy Cross. In his book "Crossing the Line", he states that when the carrier returned to Pearl Harbor to resupply before the Battle of Midway, the crew knew that the Japanese code had been broken and that U.S. naval forces were preparing to engage the Japanese fleet at Midway. He insists that he "…exactly remembers the occasion on which I was told, with full details about ships and dates…" despite the later insistence that the breaking of the code was kept secret.