One of the few still surviving B17's crashed and burnt earlier today, all seven on board walked away from it. Now there are only 11 in the world still flying.
So if you ever get the chance to see the Sally B flying at Duxford I would seriously suggest you do it before its too late.
Vintage B-17 Flying Fortress crashes with seven people aboard | Mail Online
In case you have never been inside one, they are surprisingly small.
I had to turn sidways to get between the seats.