Railhead Chill A soldier assists with railhead operations in subzero temperatures at Joint Base Elmendorf-Richardson, Alaska, Jan. 30, 2018, as part of Arctic Thrust, a short-notice rapid deployment exercise. Air Force photo by Justin Connaher SHARE: Download: Full Size (3.13 MB) Credit: Justin Connaher VIRIN: 180130-F-LX370-0332C.JPG Photo Gallery