Air Force Chief of Staff Gen. Mark Welsh III presents the Silver Star to Vietnam veterans retired Chief Master Sgt. Ronald Brodeur and former Sgt. Eric Roberts II at the Pentagon in Arlington, Va., on Thursday, December 17, 2015. Brodeur and Roberts were aboard a helicopter that was shot down over Duc Lap, Republic of Vietnam, on February 20, 1969 while trying to rescue a long range reconnaissance patrol.Air Force Chief of Staff Gen. Mark Welsh III presents the Silver Star to Vietnam veterans retired Chief Master Sgt. Ronald Brodeur and former Sgt. Eric Roberts II at the Pentagon in Arlington, Va., on Thursday, December 17, 2015. Brodeur and Roberts were aboard a helicopter that was shot down over Duc Lap, Republic of Vietnam, on February 20, 1969 while trying to rescue a long range reconnaissance patrol.Air Force Chief of Staff Gen. Mark Welsh III presents the Silver Star to Vietnam veterans retired Chief Master Sgt. Ronald Brodeur, pictured, and former Sgt. Eric Roberts II at the Pentagon in Arlington, Va., on Thursday, December 17, 2015. Brodeur and Roberts were aboard a helicopter that was shot down over Duc Lap, Republic of Vietnam, on February 20, 1969 while trying to rescue a long range reconnaissance patrol.Air Force Chief of Staff Gen. Mark Welsh III presents the Silver Star to Vietnam veterans retired Chief Master Sgt. Ronald Brodeur, center, and former Sgt. Eric Roberts II at the Pentagon in Arlington, Va., on Thursday, December 17, 2015. Brodeur and Roberts were aboard a helicopter that was shot down over Duc Lap, Republic of Vietnam, on February 20, 1969 while trying to rescue a long range reconnaissance patrol.Air Force Chief of Staff Gen. Mark Welsh III presents the Silver Star to Vietnam veterans retired Chief Master Sgt. Ronald Brodeur and former Sgt. Eric Roberts II, pictured, at the Pentagon in Arlington, Va., on Thursday, December 17, 2015. Brodeur and Roberts were aboard a helicopter that was shot down over Duc Lap, Republic of Vietnam, on February 20, 1969 while trying to rescue a long range reconnaissance patrol.Air Force Chief of Staff Gen. Mark Welsh III presents the Silver Star to Vietnam veterans retired Chief Master Sgt. Ronald Brodeur and former Sgt. Eric Roberts II at the Pentagon in Arlington, Va., on Thursday, December 17, 2015. Brodeur and Roberts were aboard a helicopter that was shot down over Duc Lap, Republic of Vietnam, on February 20, 1969 while trying to rescue a long range reconnaissance patrol.RetiredAir Force Chief Master Sgt. Ronald Brodeur, pictured, speaks after he and former Sgt. Eric Roberts II were presented with the Silver Star at the Pentagon in Arlington, Va., on Thursday, December 17, 2015. Brodeur and Roberts were aboard a helicopter that was shot down over Duc Lap, Republic of Vietnam, on February 20, 1969 while trying to rescue a long range reconnaissance patrol.Air Force Chief of Staff Gen. Mark Welsh III presents the Silver Star to Vietnam veteran and former Air Force Sgt. Eric Roberts II speaks after he and retired Chief Master Sgt. Ronald Brodeur received the Silver Star at the Pentagon in Arlington, Va., on Thursday, December 17, 2015. Brodeur and Roberts were aboard a helicopter that was shot down over Duc Lap, Republic of Vietnam, on February 20, 1969 while trying to rescue a long range reconnaissance patrol.Former Air Force Sgt. Eric Roberts II presents flowers to his wife Susan during the Silver Star ceremony for he and retired Chief Master Sgt. Ronald Brodeur at the Pentagon in Arlington, Va., on Thursday, December 17, 2015. Susan Roberts advocated for the appropriate recognition for her husband and his fellow airman over many years. Air Force Chief of Staff Gen. Mark Welsh III and Vietnam veterans retired Chief Master Sgt. Ronald Brodeur and former Sgt. Eric Roberts II sing the Air Force song at the Pentagon in Arlington, Va., on Thursday, December 17, 2015. Brodeur and Roberts were awarded the Silver Star, recognizing their heroic actions after their helicopter was shot down over Duc Lap, Republic of Vietnam, on February 20, 1969 while trying to rescue a long range reconnaissance patrol.Vietnam veterans retired Chief Master Sgt. Ronald Brodeur and former Sgt. Eric Roberts II greet well-wishers following their Silver Star ceremony at the Pentagon in Arlington, Va., on Thursday, December 17, 2015. Brodeur and Roberts were recognized for their heroic actions after their helicopter was shot down over Duc Lap, Republic of Vietnam, on February 20, 1969 while trying to rescue a long range reconnaissance patrol.