U.S. Navy N-9 Trainer pictured during a training flight near NAS Pensacola. Note the tower radiator visible forward of the upper wing. Arriving at NAS Pensacola in December 1918, this particular aircraft was damaged on three occasions and repaired before it spun into the water in 1921.

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The area in the background [has certainly changed quite a bit…](https://i.imgur.com/5lK8k3P.jpg)