An F-22 Raptor powered by biofuel takes off March 18, 2011, at Edwards Air Force Base, Calif. The flight was the capstone of a series of ground and flight test events conducted by members of the 411th Flight Test Squadron for the F-22, using the biofuel blend.

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An F-22 Raptor powered by biofuel takes off March 18, 2011, at Edwards Air Force Base, Calif. The flight was the capstone of a series of ground and flight test events conducted by members of the 411th Flight Test Squadron for the F-22, using the biofuel blend.

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Photo credit: © 508 collection / Alamy / Afripics
License: Licensed
Model Released: No

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