Testing of a synthetic fuel blend is on schedule to be completed in mid-September and certified soon after, according to Air Force officials, providing the service another alternative for fueling its aircraft. Hydroprocessed Renewable Jet (HRJ) -- a synthetic fuel containing plant oils and animal fats -- is scheduled for its final test Sept. 17, according to Jeff Braun, director of the Air Force's alternative fuels certification office. Braun on Aug. 29 told Inside the Air Force the test...
