Air Force Reservists Senior Airman Joshua Pirtle, left, and Tech. Sgt. David Underwood, aircrew flight equipment specialists assigned to the 913th Operations Support Squadron, inflate a Lightweight Inflatable Decontamination Systems shelter during an aircrew contamination control area drill at little Rock Air Force Base, Ark., June 19, 2017. An ACCA provides support of sustained aircrew chemical defense decontamination operations at forward operating locations. Air Force photo by Master Sgt. Jeff Walston