A Coast Guard watch tower located on Boon Island, 1941-45. A crew of ten armed only with rifles manned this outpost 24-hours a day, with a two-day shore leave rotated every two weeks.
A US Navy blimp overhead Boon Island, on a U-boat watch patrol.
A similar watch tower was also erected by the Coast Guard at Cape Neddick, on the ocean-side of Nubble Light, in 1941. Concrete footings for this tower still exist.
Located on Boon Island, York, Maine.