Preventing Battlefield Deaths

August 15, 2011 - 4:30 PM
In this July 19, 2011 file photo, Sgt. 1st Class Leroy Arthur Petry talks about his prosthetic hand at a news conference at Joint Base Lewis McChord, Wash. Petry, who recently received the Medal of Honor for bravery in Afghanistan, lost his right hand when attempting to throw back an enemy grenade aimed at his group. He self-administered first-aid that saved his life, part of a major shift in managing war wounds that new research shows has had success in the Army's major raid force. (AP Photo/Elaine Thompson, File)