An Airman adjusts his gas mask and personal protective equipment at Little Rock Air Force Base, Arkansas, June 5, 2021. ‘Port Dawgs’ from the 189th Aerial Port Flight, Air National Guard, and from the 96th Aerial Port Squadron, Air Force Reserve, created a joint training event focused on aerial port operations at Little Rock Air Force Base, Arkansas, June 3-6, 2021. (U.S. Air Force photo by Senior Airman Julia Ford)