Way back when: This is the prototype XB-52 Stratofortress, used as a test aircraft for all of its service life, in flight in 1953. It featured a canopy-type cockpit, rather than the side-by-side cockpit of the production models.
April 15, 2012 4:00 AM PDT
Photo by: U.S. Air Force photo
| Caption by: Jonathan Skillings
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