To me, what’s most interesting about this photo is that the men are using a test fuselage.

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“1942 Press Photo Airborne Infantry handling Jeeps via aeroplane, Washington, DC. This is an original press photo. Trucks – United State. Washington, D.C. Members of The Airborne Infantry acquire great skill in handling of “Jeeps” via aeroplane. Here are men of The Airborne Infantry practicing placing a “Jeep” in an aeroplane and removing it. The aeroplane fuselage “Mockup” is exact scale of an actual aeroplane. Sent A and O list Chicago to west coast. Photo measures 8.5 x 6.75 inches. Photo is dated 2-28-1942.”