Master Sgt. Roy Wunderlich, 39th Aerial Port Squadron vehicle training lead instructor, quizzes 39 APS reservists on different parts of a 44-passenger bus engine compartment during pre-deployment training, June 2, 2020, Peterson Air Force Base, Colorado. . The aerial port reservists will complete the vehicle training which takes roughly 2.5 weeks, 50 on-the-job training hours and requires multiple driving and written tests in order to be certified to operate the passenger vehicles. (U.S. Air Force photo by Tech. Sgt. Tiffany Lundberg)