‘Mock Fuselage On Stilts’

First up, let me just say these are fantastic; I would love to see this row of bombardier training simulators parked in any gallery in the world, right next to Chris Burden’s homemade B-Car.
But then you’d have to ask The Question: a full year after Pearl Harbor, and this is really as far as we’d gotten? If all you had to go by was the pages of Popular Mechanics, you’d have to conclude the US’s entire wartime response consisted of scale models, plywood mockups, and canvas bombers on rolling stilts.
Bombardiers Train in Mock Fuselage On Stilts, Popular Mechanics, December 1942 [popmech via google books]