Chief Master Sgt. Martin Klukas, Air Combat Command command chief, points out the “Diamond-Y Flight” plaque at the Airman Leadership School on Ellsworth Air Force Base, S.D., April 15, 2011. Chief Klukas said the plaque was significant to him because his father flew 50 missions with the “Diamond Backs” of the 99th Bomb Group. (U.S. Air Force photo by Senior Airman Jarad A. Denton)