Senior Airman Natalie Rupp, aircraft structural maintenance technician with the 911th Maintenance Squadron, watches as Tech Sgt. Shelly Pavcik, aircraft structural maintenance technician with the 911th MXS, uses a hammer on a C-17 Globemaster III engine during a Home Station Check at the Pittsburgh International Airport Air Reserve Station, Pennsylvania Aug. 25, 2020. Rupp was going through skill upgrade training and was working to learn new procedures from Pavcik. (U.S. Air Force photo by Senior Airman Grace Thomson)