Mark Novak, left, a B-29 Superfortress pilot and Brig. Gen. Paul Tibbets IV, 509th Bomb Wing commander, Whiteman Air Force Base, Mo., pose for a photo inside Doc, a restored B-29 Superfortress, June 9, 2017, on McConnell AFB, Kan. Tibbets’ grandfather, retired Brig. Gen. Paul Tibbets Jr., piloted the B-29 during WWII. (U.S. Air Force photo/Senior Airman Tara Fadenrecht)