190301-F-F3950-1001
U.S. Air Force Command Chief Master Sgt. Darren Demel, 307th Bomb Wing command chief, views the internal workings of a B-1 Lancer engine at Dyess Air Force Base, Texas, March 1, 2019. Demel was visiting the 489th Bomb Group, a geographically separated unit of the 307th Bomb Wing, during their unit training assembly. (courtesy photo)