U.S. Air Force Senior Airman Cody Crumbling, 19th Logistics Readiness Squadron fuels operator, prepares to pump fuel into an Aerial Bulk Fuel Delivery System at Alpena Combat Readiness Training Center, Michigan, May 19, 2021. The ABFDS ensures minimal time spent on the ground by expeditiously refueling fighters while keeping engines on. (U.S. Air Force photo by Senior Airman Aaron Irvin)