Staff Sgt. James Weishaupt, 362nd Training Squadron A-10 crew chief apprentice course instructor, teaches his class of Airmen how to remove the lower torque arm bearing of an A-10 at Sheppard Air Force Base, Texas, Aug. 14, 2019. Removing and installing the lower torque arm bearing is a necessary skill for Airmen to learn so they can properly access the torque arm lube points. Weishaupt said the class is scheduled to graduate Sept. 27, 2019. (U.S. Air Force photo by Airman 1st Class Madeleine E. Remillard)