![](http://www.alamy.com/thumbs/6/F6DFA61D-A7D9-4324-A845-3C9EE05586E1/HEAMWJ.jpg)
A WB-57F Canberra lands at Lajes Field for a refueling mission on their way back to Ellington Field near the NASA Johnson Space Center in Houston, Texas, Dec. 3. There are only two fully operational WB-57 aircraft in the world. Both have been flying research missions since the early 1960's. (Photos by Lucas Silva)
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Photo credit: © PJF Military Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: air, airforce, force, military, states, united, usa