Air Force fire protection specialists with the 673rd Civil Engineer Squadron make their way toward a frozen lake during ice-rescue training at Six Mile Lake on Joint Base Elmendorf-Richardson, Alaska, Jan. 11, 2020. JBER firefighters conducted training in subzero temperatures to gain the knowledge and skills necessary for safe rescue and recovery operations in, on and around ice and cold water. (U.S. Air Force photo by Alejandro Peña)
24.0-70.0 mm f/2.8
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