Parker-Hannifin Corp., Irvine, California, has been awarded a maximum $444,418,734 firm-fixed-price, requirements contract for performance-based support of A-10, E-3, F-15, F-16, and KC-135 actuators. This was a sole-source acquisition using justification 10 U.S. Code 2304 (c)(1), as stated in Federal Acquisition Regulation 6.302-1. This is a five-year base contract with one five-year option period. The performance completion date is June 30, 2027. Using military service is Air Force. Type of appropriation is fiscal 2022 through 2027 Air Force working capital funds. The contracting activity is the Defense Logistics Agency Aviation, Ogden, Utah (SPRHA1-22-D-0001).