Lockheed Martin has been awarded a $31.3 contract modification for sustainment services for the F-35 Lightning II purchased by the Royal Australian Air Force. Work is expected to be completed by January 2021 in Williamtown, Australia. Non-Pentagon participant funds will be obligated at time of award, none of which will expire at the end of the current fiscal year. The F-35A, which features conventional takeoff and landing, is one of three variants of the single-seat, single-engine fighters.