I got to rummage around "Fifi" one morning about 15 years ago when it she was up at Tri-Cities airport, preparing to leave, they'd had an airshow the previous day... What struck me was, the B-17 & 24 I'd been thru were definitely VERY OLD aircraft, but the -29 didn't seem anywhere near as old-But they were maybe 5 years apart in age...It was a subtle thing, nothing you could put yr finger on, but the Flying Fortress was like a machine from a different age. George is right, ALL of 'em were sized for 12-yr old kids...A fatass 6 footer like me was WAY outta his element in one...