Master Sgt. Jesus Castillo, 413th Flight Test Group, Operating Location-Alpha operations resource manager, poses for a photo at Davis-Monthan Air Force Base, Ariz., Nov. 14, 2017. Castillo has been in the Air Force for nearly 30 years. As a resource manager, he tracks flying training, scheduling, pay and other duties. (U.S. Air Force photo by Jamal D. Sutter)