U.S. Coast Guard instructors and students prepare the dive site on Lake Ferrell located on Minnesota National Guard Base Camp Ripley, Feb. 2, 2022. The Cold Water Ice Diving course is a joint service, high-risk training evolution that prepares military divers to perform in cold-water and ice environments. CWID runs from Jan. 31-Feb. 11 and students receive under-the-ice dive instruction after completing class room learning and simulated emergency procedures in a dive tank. (U.S. Coast Guard Video by Petty Officer 3rd Class Gregory Schell)