F-15 tests alternative jet engine fuel
Ryan Mead checks the density of the SJ-8 50/50 blended synthetic fuel before use in two successful F-15 Strike Eagle flight tests Aug. 19. Mr. Mead is an F-15 fuels engineer at Warner Robins Air Logistics Center, Robins Air Force Base, Ga. (U.S. Air Force photo/Claude Lazzara)