NASA takes to the skies of Europe
NASA and German Aerospace scientists meet on Ramstein Air Base, Germany, Jan. 31, 2018, before their last few biofuel testing flights. The scientists met every morning before a flight to discuss weather conditions and mission objectives. (U.S. Air Force photo by Airman 1st Class Milton Hamilton)

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Photo by: Airman 1st Class Milton Hamilton  |  VIRIN: 180131-F-VQ832-1009.JPG