Biting Cold Military working dog Ingo takes down a simulated enemy threat at Mountain Home Air Force Base, Idaho, Dec. 14, 2017, during Gunfighter Flag 18-1, a base exercise focusing on joint service operations that might be encountered in a deployed environment. Air Force photo by Airman 1st Class Jeremy D. Wolff SHARE: Download: Full Size (0.53 MB) Credit: Airman 1st Class Jeremy Wolff VIRIN: 171214-F-PB067-038C.JPG Photo Gallery