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Check out this interesting story with great photos at Treehuggerphotography's Blog.
This lighthouse is on a U.S. Navy base with very high security, so the public can't get onto the grounds. The keeper's house is a available for vacation housing for active and retired military people.
The lighthouse tower is cared for by the American Lighthouse Foundation. You can get a good view near the entrance to the base. Click here for more info.