Coast Guard Petty Officer Ryan Smith, a crew member aboard the Coast Guard Cutter Katmai Bay, home-ported in Sault Ste Marie, Mich., demonstrates the proper way to fire the shoulder line-throwing gun during training on the cutter, while moored in Sault Ste Marie, July 30, 2013. The line-throwing gun is used to pass the messenger line for the towing hawser to another vessel in heavy weather conditions. (U.S. Coast Guard photo by Seaman James Ash)