A vintage B-25 Mitchell bomber flies near the National Museum of the U.S. Air Force at Wright-Patterson Air Force Base, Ohio, during a memorial flight honoring the Doolittle Tokyo Raiders on April 18, 2010. The 68th Doolittle Raiders? reunion commemorates the anniversary of the Doolittle Tokyo Raid. On April 18, 1942, U.S. Army Air Forces Lt. Col. Jimmy Doolittle?s squad of 16 B-25 Mitchell aircraft bombed Japanese targets in response to the attack on Pearl Harbor. (U.S. Air Force photo/Tech. Sgt. Jacob N. Bailey)