During World War II the United States Navy bought most of the east end, including Montauk Manor, to turn it into a military base. Fort Pond Bay became a seaplane base. The U.S. Army established Camp Hero with guns to protect New York shipping lanes. Several concrete bunker observation posts were built along the coast, including one immediately to the east of the Montauk Lighthouse. Base buildings were disguised so they would appear from above as a New England fishing village.