Capt. Sheryl L. Dickinson, commanding officer of Coast Guard Sector St. Petersburg, Fla., salutes and is relieved by Capt. Gregory D. Case during an official change of command ceremony at the Mahaffey Theater, Wednesday, June 12, 2013. A change of command is a military tradition that represents a formal transfer of authority and responsibility from one commanding officer to another. (U.S. Coast Guard photo by Petty Officer 2nd Class Michael De Nyse)