Re: NPS looking for Bricklayers to work on Fort Jefferson
I've been to Ft. Jefferson. Layed over for a day and a half in 1994 as a stop on a sail boat trip to Cuba.
There are two ways to get there - boat and sea plane from Key West. There are some fast boast from Key West that do day trips to Ft. Jefferson.
While beautiful and remote, there are a couple of things that discourage long stays. 1) The fort is located in the Dry Tortugas - dry as in "no water" dry; 2) mosquitos - this is ground zero for these nasty little pests. There is a bird sanctuary on a small mangrove island just off the boat dock and the cacaphony of bird noises and sounds prevents sleeping from about 4:30 AM to dusk.
There's some excellent diving and snorkeling on the reef at nearby Loggerhead Key.
The Cuban charterboat captains will sometimes anchor off the island at night during multi-day charters. You can trade Budweiser and Marlboros for Cuban rum and Cohibas.
Nice place to visit (for 24 hours or less) wouldn't want to be there beyond that.