Rear Adm. Stephen P. Metruck walks with his wife Peggy Duxbury following his change-of-command and retirement ceremony Friday, April 22, 2016. U.S. Coast Guard photograph by Auxiliarist Trey Clifton PORTSMOUTH, Va. — Rear Adm. Meredith L. Austin assumed command of the Coast Guard’s 5th District during a change-of-command ceremony Friday at the Nauticus in Norfolk. Austin relieved Rear Adm. Stephen...