Alaska Air National Guard Lt. Col. Jeffrey Banker, director of operations with the 176th Wing’s 144th Airlift Squadron, performs a buddy check after putting on protective gear during exercise Polar Force 19-4 at Joint Base Elmendorf-Richardson, Alaska, April 3, 2019. Polar Force evaluates unit combat readiness while fighting in chemical, biological, radiological, nuclear and explosive protective gear. (U.S. Air National Guard photo by Senior Airman Louis Velasco)

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Photo by: SrA Velasco |  VIRIN: 190403-Z-ZU973-1001.JPG