
Retirement of the Last KC-10 Extender Leaves USAF with Aerial Refueling Gap
Last year’s retirement of the final KC-10 Extender removed a critical heavy-refueling asset from the USAF fleet, exposing a capacity shortfall and placing additional strain on aging KC-135 and KC-46 tankers. The KC-Z4 concept has emerged as a potential solution to restore the Air Force’s global refueling reach.