Kenneth Stephen Wilsbach上將為美國空軍太平洋空軍(PACAF)司令。他提到F-35與歼-20曾有過非常近距離的接觸,但並非攔截。他對歼-20的評論是飛行員技術不錯,但還搞不懂中國對歼-20的定位是什麼。歼-20是要像F-35作為多功能機種,還是要像F-22以空優為主、對地攻擊為輔,若說能確認還言之過早。他對歼-20所有的評論就這樣而已,算評價蠻高嗎?
A top US Air Force (USAF) general says that Lockheed Martin F-35s have had at least one encounter with Chengdu J-20s, and that the Shaanxi KJ-500 airborne early warning and control (AEW&C) aircraft has a key role in long-range air-to-air kill chains.