Air Force Reserve Staff Sgt. Michael Richardson, an aircrew flight equipment specialist assigned to 913th Operations Support Squadron, scrubs down the boots of Staff Sgt. Michael Hopson, a loadmaster with the 327th Airlift Squadron, to remove simulated contaminants at Station No. One of the aircrew contamination control area at Little Rock Air Force Base, Ark, June 19, 2017. Air Force photo by Master Sgt. Jeff Walston