Question: What military installation that defended the eastern entrance to Long Island Sound as part of the Harbor Defenses of Long Island Sound is on Fishers Island?
Sentence (from "Fort Michie"): Along with Fort H. G. Wright, Fort Terry, and Camp Hero, it defended the eastern entrance to Long Island Sound as part of the Harbor Defenses of Long Island Sound, thus defending Connecticut's ports and the north shore of Long Island.
Relevant evidence: Yes