A pair of F-16 Aggressors fly towards "blue forces" over the Joint Pacific Alaska Range Complex Sept. 14, 2009, Eielson Air Force, Base, Alaska. Blue forces are considered good or friendly forces. The F-16's are assigned to the 18th Aggressor Squadron, who are responsible for training and preparing joint and allied aircrews for comabat missions. The JPARC provides 67,000 square miles of airspace, one conventional bombing range and two tactical bombing ranges containing more than 400 different types of targets and more than 30 threat simulators.