Researchers mark death of Pearl Harbor mastermind Yamamoto

FILE - In this April 16, 1944, file photo, a combined force of American and Royal New Zealand Air Force dive bombers taxi to a runway on the island of Bougainville in Papua New Guinea. The island is where American fighters shot down Admiral Isoroku Yamamoto, the mastermind of the Pearl Harbor attack, making the wreck site one of most important of World War II. Now, 75 years later, a group from the U.S. and Japan is trekking to the remote Pacific island to document the site. (AP Photo/Frank Filan, File)

FILE - This May 21, 1943, file photo shows Admiral Isoroku Yamamoto, Commander-in-Chief of the Japanese combined fleet and the mastermind of the attack on Pearl Harbor. A group from the U.S. and Japan is trekking to a remote Pacific island jungle in Papua New Guinea to document what is considered one of the most important wreck sites of World War II: where American fighters shot Yamamoto down 75 years ago. (AP Photo, File)

FILE - In this April 1944 file photo, infantrymen of the U.S. Army Americal Division watch from behind a barricade of piled-up sandbags as U.S. dive bombers blast Japanese positions, right, across the mouth of the Torokina river on the island of Bougainville in Papua New Guinea. The island is where American fighters shot down Admiral Isoroku Yamamoto, the mastermind of the Pearl Harbor attack, making the wreck site one of most important of World War II. Now, 75 years later, a group from the U.S. and Japan is trekking to the remote Pacific island to document the site. (AP Photo, File)

ALBANY, N.Y. — A group from the U.S. and Japan is trekking to a remote Pacific island jungle to document what is considered one of the most important wreck sites of World War II: where American fighters shot down a Japanese bomber carrying the mastermind of the Pearl Harbor attack.