Who was involved in the Pearl Harbor bombing?

The Japanese Imperial Navy and the U.S. Navy-Marine Corps/and the U.S. Army Air Corp were the involved in the Pearl Harbor bombing.The Japanese launched multiple waves of planes from their carriers which were located at a point northwest of the Hawaiian Islands.Hours before the aerial attack, a midget Jap sub was sighted by a U.S. Navy destroyer very close to the harbor entrance. If the U.S. Navys' carriers were at Pearl Harbor and not out on maneuvers or suppling bases such as Midway and Wake Island with aircraft, then the Hawaiian Islands and the Western U.S. would be the Imperial Japanese Armys' next plan of where to invade.