Airmen cover two Transport Isolation Systems with tarps due to inclement weather at Dover Air Force Base, Delaware, April 30, 2020. The TIS units were delivered to Dover AFB by C-17 Globemaster III from Joint Base Charleston, South Carolina. In accordance with health protection policies, Dover AFB will serve as the sole hub for TIS decontamination on the East Coast. (U.S. Air Force photo by Senior Airman Christopher Quail)