Senior Airman Raynard Ruiz-Sepulveda, 436th Maintenance Squadron C-5 regional isochronal journeyman, operates auxiliary power units April 8, 2020, at Dover Air Force Base, Delaware. Ruiz-Sepulveda monitors APUs and fuel gauges to ensure the C-5 is running properly while being worked on by maintenance and electrical personnel. Despite the threat of COVID-19, Dover AFB Airmen continue to support heavy airlift operations while observing safety precautions such as wearing cloth masks, social distancing, and washing or sanitizing hands frequently. (U.S. Air Force photo by Senior Airman Christopher Quail)
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