The Fifth Coast Guard District ensures the safety and security of the oceans, coastal areas, and marine transportation system within America’s Mid-Atlantic Region. We focus on risk reduction and prevention, but are prepared to respond with courage and speed to any maritime incident. D5’s 156,000 square miles of ocean, bays, rivers, wetlands and tidal marshes are unique and filled with historical significance, encompassing six states, vital geographic waterways, several major mid-Atlantic ports, the largest naval base in the world, and our Nation’s capital.