More than 85 percent of the Air Force’s fleet is now certified to operate unconstrained with a 50-50 blend of regular JP-8 jet fuel and synthetic paraffinic kerosene, according to service officials. USAF’s goal is to have the entire fleet cleared to run on this fuel mixture next year. So far, the B-1s, B-52s, C-17s, F-15s, F-16s, F-22s, and KC-135s are certified, Air Force spokesman Gary Strasburg told the Daily Report last week. SPK is derived today from natural gas under the Fischer Tropsch refining process, but could also be produced from coal, of which the US has abundant supply. Use of SPK is one means of reducing US dependence on foreign sources of energy. More recently, USAF has also been testing fuel derived from biomass, such as the oil of the camelina seed and animal fat. (See also Edwards report by Kenji Thuloweit)
US Space Command Should Always Be Led by a Guardian
Sept. 12, 2026
General Stephen Whiting took command of U.S. Space Command in January 2024, and if customary three-year tenures hold, his tour would end in January 2027. The question now before the President and Senate is who should follow him? Whoever they choose, it has to be a Guardian—and so should every successor…
