Lockheed Martin Corp., Fort Worth, Texas, is awarded a $122,706,700 cost-plus-fixed-fee modification (P00079) to a previously awarded contract (N0001921C0020). This modification definitizes critical technical refresh actions in support F-35 Joint Strike Fighter (JSF) pilot and maintainer training site stand-up, schedules, support capability, and overall training system sustainment. Additionally, this modification adds scope to provide non-recurring engineering and necessary materials to refresh end of life components in fielded F-35 JSF pilot and maintainer training devices for the Air Force, Marine Corps, Navy, Foreign Military Sales (FMS) customers, and non-U.S. Department of Defense (DOD) participants. Work will be performed in Orlando, Florida (80%); Fort Eglin Air Force Base, Florida (15%); and Fort Worth, Texas (5%), and is expected to be completed in December 2025. Fiscal 2022 aircraft procurement (Air Force) funds in the amount of $39,316,982; fiscal 2021 aircraft procurement (Navy) funds in the amount of $28,107,219; FMS customer funds in the amount of $15,184,063; and non-U.S. DOD participant funds in the amount of $23,298,433 will be obligated at time of award, $28,107,219 of which will expire at the end of the current fiscal year. The Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.