FILE - In this April 18, 1942 file photo, one of Lt. Col. Jimmy Doolittle's B-25 bombers takes off from the flight deck of the USS Hornet for the initial air raid on Tokyo. Coming just four months after the Imperial Japanese Navy savaged the U.S. Pacific Fleet at Pearl Harbor, the Doolittle raid on Japan's home did little damage, but lifted the spirits of Americans and electrified a world at war. (AP Photo, File)