PORTSMOUTH, Va. — Rear Adm. Stephen P. Metruck is scheduled to assume command of the Coast Guard’s 5th District during a change-of-command ceremony Wednesday at 1 p.m. at the nTelos Wireless Pavilion. Metruck will relieve Rear Adm. Steven H. Ratti, who has served as the 5th District’s commander since April 2012. As commander of the 5th District, Metruck will oversee operations in navigable waters...