The Air Force is seeking seven extra F-35 Joint Strike Fighters and an increased investment in hypersonic testing in the $4.6 billion unfunded priorities list the service sent to Congress, according to documents obtained by Inside Defense . The list, first reported by Politico today, includes $921 million to boost procurement of the conventional F-35 variant to 40 in fiscal year 2023. F-35As were not included in the service’s UPL for FY-22 -- for the first time in recent...