MINOT AIR FORCE BASE, ND -- Chief Master Sgt. Mark Clark, 5th Bomb Wing Command Chief Master Sergeant, is sprayed down by his wife Linda after his final B-52H Stratofortress flight here, May 28. Chief Clark is retiring from active duty after 30 years of service in the Air Force on June 19. (U.S. Air Force photo by Staff Sgt. Keith Ballard)