U.S. Coast Guard Chief Warrant Officer Sean Eversole, an instructor at the Cold Water Ice Diving course, explains the necessary process of preparing the ice before a diving hole is cut for the course on Ferrell Lake at Camp Ripley, Minnesota, Feb. 2, 2022. A probing team must test the ice in order for the ice diving exercises to take place. (U.S. Coast Guard photo by Petty Officer 3rd Class Omar Faba)