PORTSMOUTH, Va. — Rear Adm. Steven H. Ratti assumed command of the Coast Guard’s 5th District during a change of command ceremony Wednesday, at 2 p.m. at the nTelos Wireless Pavilion, here. Ratti relieved Rear Adm. William “Dean” Lee, who has served as the 5th District’s commander since June 2010. “We are the smallest of the military services. … but when someone is in...