During the 2014 Coast Guard Sector Jacksonville Cutter Roundup, cutter crews compete against each other in the Heat and Beat Challenge Tuesday, April 29, 2014, aboard the Coast Guard Cutter Maria Bray in Atlantic Beach, Fla. Heat and beat is a technique used by Coast Guard aids to navigation crews when attaching new chain to a buoy and involves heating a shackle pin until it is glowing and then beating it into place using sledgehammers. (U.S. Coast Guard photo by Petty Officer 1st Class Lauren Jorgensen)