Though the Air Force's unfunded priorities list cites a need for seven additional F-35 Joint Strike Fighters, a service spokeswoman noted officials' interest in extra procurement hinges on whether a critical enabler of the program's advanced Block 4 capabilities is included in those jets. The $921 million procurement boost, contained in the UPL Inside Defense obtained earlier this month , would bring the fiscal year 2023 conventional variant buy to 40 aircraft -- up from the 33 officials are...