books.google.com - When the Japanese attacked Pearl Harbor a second time in March 1942 during Operation K, it was the longest shore-based bombing mission of the war, lasting nearly 36 hours and covering more than 4,750 miles. The operation involved two Kawanashi H8K "Emily" flying boats taking off from the Marshall Islands...http://books.google.com/books/about/The_Second_Attack_on_Pearl_Harbor.html?id=q1k_5R-6rUUC&utm_source=gb-gplus-shareThe Second Attack on Pearl Harbor