Chien Van Bui, an artilleryman in the South Vietnam army relays artillery rounds during the Vietnam War. His son, Lt. Col. Asan Bui, now serves as a communications flight commander in the U.S. Air Force Reserve’s 920th Rescue Wing based at Patrick Air Force Base, Florida. Coincidentally, Bui’s current unit can trace its roots back to the Vietnam War. (Courtesy photo provided by Lt. Col. Asan Bui)