Capt. Mark Vlaun, prospective commander of Sector Jacksonville, addresses a crowd Tuesday, May 14, 2019, during the Coast Guard Sector Jacksonville change of command ceremony at Naval Station Mayport in Jacksonville, Florida. During the ceremony, Vlaun relieved Capt. Todd Wiemers, who served as commander of Sector Jacksonville since April 2017. (U.S. Coast Guard photo by Petty Officer 3rd Class Ryan Dickinson)