The final version of the fiscal year 2021 defense authorization bill limits the Air Force's near-term plans to retire some legacy aircraft, but moves away from provisions included in earlier drafts that would have set minimum aircraft levels for major mission areas. House and Senate lawmakers released a conference report Thursday that, if it passed, would prevent the Air Force from retiring any A-10, RQ-4 or KC-135 aircraft in the near term, while allowing the service to slightly reduce force...