Air Force officials have only one more test to pass to complete the certification process for the 50-50 Fischer-Tropsch Synthetic Paraffinic Kerosene blend alternative fuel, but they are having trouble finding an available MQ-9 Reaper unmanned air vehicle to complete the test, according to a service official. The service has already tested the Reaper engine and all of its subsystems with the alternative fuel, according to Jeff Braun, the director of the Air Force's alternative fuels certification office (AFCO). However,...
