Airman 1st Class Alexander Chisholm, 525th Aircraft Maintenance Unit, hooks up a fuel hose to an F-22 Raptor Sept. 1. Elmendorf Air Force Base, Alaska, began the using Plus 100 additive in their JP-8 aviation fuel Sept. 1. The additive helps prevent buildup in F-15 Eagle and F-22 Raptor engines; therefore it will reduce the amount of maintenance needed on those engines. (U.S. Air Force photo/Airman 1st Class Christopher Gross)