Coast Guard crew from Coast Guard Station Harbor Beach, Mich., aboard a 25-foot response boat transit through the water of Lake Huron near the Harbor Beach Lighthouse, June 24, 2014. The Harbor Beach Lighthouse is a "sparkplug lighthouse" located at the end of the north breakwall entrance to the harbor of refuge on Lake Huron. (U.S. Coast Guard photo by Petty Officer 3rd Class Peter Brown)