Chief Master Sgt. (Ret.) Thomas Kistler plays ?Taps? on his bugle at the close of the Prisoner of War/Missing in Action retreat ceremony on Joint Base Charleston, S.C., Sept. 17, 2010. Mr. Kistler served 29 years in the Air Force as an Air Force band member playing the tuba at events such as President Ronald Regan's internment. (U.S. Air Force photo/Senior Airman Timothy Taylor)

Members from each military branch run their respective flags while led by the Prisoner of War/Missing in Action flag to the base parade grounds for the start of the POW/MIA retreat ceremony on Joint Base Charleston, S.C., Sept. 17, 2010. A series of teams held a running vigil at the base track, circling it for 24 hours. For the final portion of the run, a joint-service team was followed by a fire truck and two patrol cars as they ran down Hill Boulevard to the base parade grounds. (U.S. Air Force photo/Senior Airman Timothy Taylor)

Col. Martha Meeker and Paul Hollen render salutes Sept. 17, 2010, on Joint Base Charleston, S.C., after laying a Prisoner of War/Missing in Action wreath to commemorate the sacrifices of POW/MIA heroes. The wreath was laid in memory of those who are still missing in action. Mr. Hollen served as a waist gunner on a B-17 when it was shot down over Germany in 1945. A rough parachute landing left Mr. Hollen face down in the German snow with a serious back injury. Nazi soldiers who found Mr. Hollen were brutal and unforgiving, he said. They took him prisoner, and he spent the next six months at a camp in Moosburg, Germany. Colonel Meeker is the 628th Air Base Wing Commander. (U.S. Air Force photo/Senior Airman Timothy Taylor)

Representatives from all military branches stand at ease before retiring the American flag during a Prisoner of War/Missing in Action retreat ceremony on Joint Base Charleston, S.C., Sept. 17, 2010. A member from each military service was chosen to retire the flag in honor of all those who perished while in captivity, paying the ultimate price for liberty. (U.S. Air Force photo/Senior Airman Timothy Taylor)

Members from the Joint Base Charleston Honor Guard stand at the position of present arms before rendering a 21-gun salute at a Prisoner of War/Missing in Action retreat ceremony on Joint Base Charleston, S.C., Sept. 17, 2010. The 21-gun salute is a tradition that honors fallen military members and is most frequently observed during military funeral honors. (U.S. Air Force photo/Senior Airman Timothy Taylor)

Lt. Col. (Ret.) Ernest Jenkins observes as representatives from all military branches fold the American flag during a Prisoner of War/Missing in Action retreat ceremony on Joint Base Charleston, S.C., Sept. 17, 2010.The retreat commenced after the end of a 24-hour, joint-service run, which kept military service flags and the POW/MIA flag in constant motion. Colonel Jenkins, a former prisoner of war, was detained in Bath, Germany, during World War II after his B-17 was shot down. He was imprisoned for 17 months. Colonel Jenkins was a bombardier on the B-17 "Stardust." (U.S. Air Force photo/Senior Airman Timothy Taylor)