Senior Airman Cuong Nguyen, 931st Maintenance Squadron crew chief, performs a 4A-check inspection on a KC-46A Pegasus Aug. 3, 2020, at McConnell Air Force Base, Kansas. Nguyen and his team are responsible for lubricating 447 connection points on the KC-46 every six months. (U.S. Air Force photo by Senior Airman Alexi Bosarge)