BUCHANAN, Tenn. - Senior Chief Petty Officer John Williams (right) relieved Master Chief Petty Officer Ian L. McVicker (left) as officer-in-charge of the Coast Guard Cutter Cimarron during an official change-of-command ceremony in Buchanan, July 18, 2012. Williams arrived from Coast Guard Aids to Navigation Team Buffalo, N.Y. U.S. Coast Guard photo.