Coast Guardsmen from Sector St. Petersburg, Fla., and the surrounding area prepare for the 36th annual Blackthorn memorial service in St. Petersburg, Thursday, Jan. 28, 2016. The Blackthorn sank after colliding with the tanker Capricorn near the Sunshine Skyway Bridge, in St. Petersburg, Jan. 28, 1980, resulting in the Coast Guard's worst peacetime disaster. (U.S. Coast Guard photo by Petty Officer 2nd Class Ashley J. Johnson)