Tech. Sgt. Zachary Stevens, 445th Maintenance Squadron maintenance technician, inspects a C-17 Globemaster III engine on January 6, 2019. The C-17 has four Pratt & Whitney PW2040 (military designation F117-PW-100) engines with 40,440 pounds of thrust each. (U.S. Air Force photo/Master Sgt. Patrick O’Reilly)