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Doolittle Raider Lt. Col. Dick Cole, stands in front of a B-25 at the Destin Airport in Destin, Fla. on Tuesday April 16, 2013 before a flight as part of the Doolittle Raider 71st Anniversary Reunion. Cole was Lt. Col. Jimmy Doolittle's co-pilot during the raid. The Doolittle Tokyo Raid was a notable attack on the Japanese during World War II using B-25's. The B-25 pilots trained to take off from an aircraft carrier, which the plane was not designed to do. (AP Photo/Northwest Florida Daily News, Nick Tomecek) ( Doolittle Raiders )

A line of people wait to have various items signed by three members of the Doolittle Raid on Tokyo during World War II on Wednesday April 17, 2013 at the Air Force Armament Museum on Eglin Air Force Base. The press conference and autograph is part of this weekís festivities for the Doolittle Raider 71st Anniversary Reunion. (AP Photo/Northwest Florida Daily News, Nick Tomecek) ( Doolittle Raiders )

Doolittle Raiders (from left) Lt. Col. Dick Cole, Staff Sgt. David Thatcher and Lt. Col. Edward Saylor answer questions from the media and the public about the Doolittle Tokyo Raid during a press conference on Wednesday April 17, 2013 at the Air Force Armament Museum on Eglin Air Force Base. The press conference and autograph session that followed is part of this weekís festivities for the Doolittle Raider 71st Anniversary Reunion. (AP Photo/Northwest Florida Daily News, Nick Tomecek) ( Doolittle Raiders )

Doolittle Raider Staff Sgt. David Thatcher, left, shakes hands with Alexis Edwards, 5, and her mother Michelle Edwards and father Brian Edwards (back) during an autograph session on Wednesday April 17, 2013 at the Air Force Armament Museum on Eglin Air Force Base. The press conference and autograph session is part of this weeks festivities for the Doolittle Raider 71st Anniversary Reunion. (AP Photo/Northwest Florida Daily News, Nick Tomecek) ( Doolittle Raiders )

Doolittle Raider Lt. Col. Dick Cole flies a B-25 in the skies over Destin, Fla. on Tuesday April 16, 2013, during a flight as part of the Doolittle Raider 71st Anniversary Reunion. The Doolittle Tokyo Raid was a notable attack on the Japanese during World War II using B-25's. The B-25 pilots trained to take off from an aircraft carrier, which the plane was not designed to do. (AP Photo/Northwest Florida Daily News, Nick Tomecek) ( Doolittle Raiders )

The nose of a B-25 is illuminated by the scenery of Northwest Florida during a recent flight as part of the Doolittle Raider 71st Anniversary Reunion in the skies over Destin, Florida on Tuesday April 16, 2013. The Doolittle Tokyo Raid was a notable attack on the Japanese during World War II using B-25's. The B-25 pilots trained to take off from an aircraft carrier, which the plane was not designed to do. (AP Photo/Northwest Florida Daily News, Nick Tomecek) ( Doolittle Raider )

Doolittle Raiders, in white caps, left to right, Edward J. Saylor, David J. Thatcher and Richard E. Cole view the new Doolittle Raiders exhibit with facilities coordinator Mia Checkley , far right, Wednesday morning April 17, 2013 at Northwest Florida State College in Niceville, Fla. The Doolittle Tokyo Raid was a notable attack on the Japanese during World War II using B-25's. (AP Photo/Northwest Florida Daily News, Mark Kulaw) ( Doolittle Raiders )

In this undated file photo, orders in his hand, Capt. Marc A. Mitscher, skipper of the U.S.S. Hornet, discusses details for the take-off of Army members for the Tokyo raid with Maj. Gen. James H. Doolittle, foreground left. Survivors of the April 17, 1942 raid on Japan at the start of World War II celebrate the 70th anniversary of their raid on Japan April 17-20, 2012, in Dayton, Ohio. (AP File Photo) ( Doolittles Raiders 70 Years Later )

One of a group of sixteen U.S. Army Air Corps B-25 bombers leaves the deck of the USS Hornet sailing 700 miles off the coast of Japan for a suprise attack on Tokyo on April 18, 1942, by Maj. Gen. James Doolittle and his crewmen. The carrier-based bombing raid on the mainland was a psychological blow to Japanese militarists and may have led to their decision to launch the Battle of Midway, Japan's worst naval defeat of the war. (AP Photo/File) ( DOOLITTLE'S RAID #1 )

U.S. Army Air Corps Maj. Gen. James Doolittle fastens a medal on the tail of a 500-lb. bomb that he and the crew of sixteen B-25s dropped on Tokyo during a suprise raid on April 18, 1942. Doolittle and his crews' attack shocked the Japanese military establishment at a time when the Allies war effort in the Pacific seemed to be bad news following bad news from Bataan to Wake Island. (AP Photo/File) ( DOOLITTLE'S RAID )

A B-25 Mitchell bomber takes off from the USS Hornet's flight deck for the initial air raid on Japan's capital Tokyo, on April 18, 1942; a secret military mission that U.S. President Roosevelt referred to as Shangri-La. (AP Photo) ( WWII DOOLITTLE RAID ON TOKYO )