House appropriators are concerned the Air Force's fiscal year 2020 budget request doesn't include the resources to adequately grow its fighter fleet, saying in a report accompanying a draft mark of the funding bill the service needs to boost F-35 procurement even as it recapitalizes its fourth-generation fleet. The Air Force has spent the last year studying its force structure needs, announcing in September it expects to grow from 312 to 386 squadrons by 2030 and indicating it will need...