Petty Officer 3rd Class Vincent Isaiah Pangelinan, a Gunner's Mate aboard Coast Guard Cutter Seneca, fires the messenger line to pass the towing line to CGC Tybee during a towing evolution off the coast of Massachusetts. A messenger line is used to assist in heaving the mooring to the shore or to another ship. (U.S. Coast Guard photo by Petty Officer 2nd Class Kyle Miller)