Capt. Sheryl L. Dickinson, commanding officer of Sector St. Petersburg, Fla., speaks to the crowd during her 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.