This video was taken at Thacher Island, off Rockport, Massachusetts, circa 1989. Thacher Island's twin lighthouses are a National Historic Landmark. Armand Desharnais, the resident caretaker, turned on the equipment to run the old air foghorn, which was no longer used at the time. Suzanne Gall Marsh of the Friends of the Boston Harbor Islands pushes the button to activate the horn. You can see that it was so loud that it even distorted the video. The man next to Suzanne is Ned Cameron, who started the Thacher Island Association.