U.S. Air Force Staff Sgt. Kevin Khanthavongsay, 489th Maintenance Squadron B-1B Lancer crew chief, communicates with B-1 pilots at Dyess Air Force Base, Texas, Nov. 22, 2016. The 489th MXS Airmen maintained 100 percent of their sorties with no maintenance issues for 13 straight months. (U.S. Air Force photo by Senior Airman Kedesha Pennant)