Airman 1st Class Gabriel Gonzalez, 60th Aircraft Maintenance Squadron aerospace propulsion journeyman, checks gauges to verify weight load during a C-5M Super Galaxy engine change September 9, 2020, at Dover Air Force Base, Delaware. Weighing between five to six tons and costing 15.5 million dollars, C-5M engines are handled with precision and care. (U.S. Air Force photo by Airman 1st Class Jonathan Harding)