I got the opportunity to take a 30 minute flight in a fully restored B-17 that's part of a traveling exhibit of 3 WWII bombers, last August here at Love Field in Dallas.
All 3 planes, the B-17 Flying Fortress, a B-24 Liberator, and a B-25 Mitchell, are restored and maintained to the exact conditions as they were while in service.
They took 8 of us up at one time. They gave us boat seat cushions to sit on until they reached altitude, then we were free to get up and walk around.
Both side gun turret doors were then opened, a door about 6-8' square, then they positioned us where they could open the bomb bays which are about 14-16' long.
It was about an 85 degree day, but the wind was gusting that day as high as 35-40 mph, and with all those ports open, it was like a hurricane inside that beast. The conditions those guys endured flying those things over Europe at 35,000 feet in freezing temps, for hours on end, is almost superhuman.
I flew three different aircraft in my career in the Marine Corps, including the F/A-18D, but that 30 minute Flying Fortress flight is one I'll never forget.
BTW, Landry's older brother Robert, died during WWII when the B-17 bomber he was in disappeared over the Atlantic in route to England.