U.S. Coast Guard Chief Petty Officer Christopher Tull, an instructor at the Cold Water Ice Diving course, rides a snowmobile onto the ice on Ferrell Lake at Camp Ripley, Minnesota, Feb. 3, 2022. The sled attached to the snowmobile is used to carry equipment from the land onto the ice. (U.S. Coast Guard photo by Petty Officer 3rd Class Omar Faba)