U.S. Air Force Staff Sgt. Kevin Khanthavongsay, 489th Maintenance Squadron B-1B Lancer crew chief, pulls a set of chocks from a B-1 at Dyess Air Force Base, Texas, Nov. 22, 2016. The chocks are used to hold the front wheels of the aircraft in place for safety precautions. (U.S. Air Force photo by Senior Airman Kedesha Pennant)