1st Lt. Adam Baker, from the 28th Bomb Squadron at Dyess Air Force Base, Texas, plays Taps during in the funeral ceremony for Col. James Dennany and Maj. Robert Tucci Jan. 14, 2011, at the Dallas-Fort Worth National Cemetery. More than 41 years ago, Colonel Dennany and Major Tucci were escorting an AC-130 gunship on a night strike mission when their F-4D Phantom was downed by anti-aircraft fire. A search was conducted afterward, but revealed nothing. No other search was initiated due to heavy anti-aircraft fire in the area. In 1999, officials in Laos turned over crew-related equipment, two .38 caliber pistols and human remains. Scientists from the Joint POW/MIA Accounting Command used circumstantial evidence and forensic tools to identify the remains. According to the Defense Prisoner of War/Missing Personnel Office, there are still 1,713 U.S. service members still unaccounted for from the Vietnam War. (U.S Air Force photo/Airman 1st Class Shannon Hall)