Senior Master Sgt. Andrew Silkworth, 436th Aerial Port Squadron airfreight superintendent, tightens a cargo strap at Dover Air Force Base, Delaware, April 30, 2020. Tarps were placed on top of the Transport Isolation Systems due to inclement weather at Dover AFB. 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)