NEW YORK – A 45-foot Response Boat-Medium from Coast Guard Station New York and the Coast Guard Cutter Katherine Walker transit under the Brooklyn Bridge following a mass casualty drill, September 15, 2017. The Katherine Walker is one of the main Coast Guard platforms providing maritime security while the United Nations General Assembly is in session from Sept. 17-22, 2017. The Coast Guard is responsible for local maritime safety and security during the week-long. (U.S. Coast Guard photo by Chief Warrant Officer Allyson E.T. Conroy)