49-2434 a Northrop F-89B Scorpion. Arrived USAF in January 1951 as an F-89A it was eventually converted to a F-89B, but retained the mock-up of the Martin F-1 turret in the nose. Seen here at the USAF History and Traditions Museum, Lackland, Texas around 1965/6. Scanned from an original reproduced photograph from my collection date, and photographer unknown.
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