Fireman Samuel Potter, a crewman at Coast Guard Station Harbor Beach, Mich., holds the tow line while conducting two-boat training aboard a 24-foot and a 25-foot response boat in Lake Huron, Sept. 28, 2015. Station crews routinely conduct training together to ensure they are ready for a real emergency on the water. (U.S. Coast Guard photo by Petty Officer 2nd Class Peter Brown/released)