Boeing B-17G Flying Fortress (U.S. Air Force Photograph.)

B-17G of 92nd BG

July 25, 2016

by Lone_Sentry_Admin

1 min read

Boeing B-17G Flying Fortress of the 92nd Bomb Group at RAF Podington. (U.S. Air Force Photograph.)

Boeing B-17G Flying Fortress (U.S. Air Force Photograph.)

The Curtiss XP-40 Warhawk fighter undergoes drag-reduction testing in the full-scale wind tunnel at Langley Research Center in 1939. (NASA Photograph.)

Curtiss XP-40 Warhawk

A new B-17F Flying Fortress bomber warms up its engines at Boeing factory in Seattle as it prepares for a flight test. (Library of Congress Photograph.)

B-17 Engine Warmup

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