The Stearman XA-21 prototype twin-engined attack aircraft. (U.S. Air Force Photograph.)

Stearman XA-21

April 16, 2015

by Lone_Sentry_Admin

1 min read

The Stearman XA-21 prototype twin-engined attack aircraft. (U.S. Air Force Photograph.)

The Stearman XA-21 prototype twin-engined attack aircraft. (U.S. Air Force Photograph.) — (U.S. Air Force Photograph.)

Douglas A-20 Havoc photographed during a snowstorm at Ladd Field, Alaska, February 1944. (U.S. Air Force Photograph.)

A-20 Havoc at Ladd Field

New engines for the B-29 Superfortresses of the 20th Air Force are piled on the airfield on Guam. (U.S. Air Force Photograph.)

New B-29 Engines

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