The US Navy carried out the first Naval Offensive of the War when three US aircraft carriers carried out air Raids on Japanese bases in the Marianas Islands. At the same time a convoy reached the islands providing the islands with additional food, munitions and fuel . Two US aircraft carriers were conducting operation off the West Coast of the United States. An American Army Air Force Colonel by the name of Jimmy Doolittle had come up with an idea to strike Japan. It had been approved by the Commander of the Army Air Force, Army Chief of Staff, Secretary of War, Admiral King and most important of all the President of the United States.