The Coast Guard Cutter SPAR's crew prepares to throw lines to the Coast Guard Cutter Bailey Barco's crew as part of a towing exercise in Alaskan waters Oct. 28, 2017. Towing exercises help train personnel to stay proficient in this task in case a cutter crew is needed to assist vessels in distress. U.S. Coast Guard photo by Petty Officer 2nd Class Jonathan Baker.