USAF: Our New Tanker Should Be Ready for War in 3 or 4 Years

Problems with the new plane’s refueling system could prompt the Air Force to put off retiring 1960s-era KC-135 tankers that are supporting the U.S. military’s operations around the world. The KC-46 was supposed to be battle-ready in 2017, but numerous design and development problems have led to repeated delays and cost the plane’s maker Boeing more than $3 billion.

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