Fort Miles is located in Delaware

Fort Miles was an American military installation located on Cape Henlopen near Lewes, Delaware. Although funds to build the fort were approved in 1934, it was 1941 before the fort was constructed. It was built to defend Delaware Bay and the Delaware River and to protect domestic shipping from enemy fire within the capes, particularly from the German surface fleet. The fort also operated a controlled naval minefield to prevent ships entering the Delaware River estuary.

• http://en.wikipedia.org/wiki/Fort Miles