Here we go again. Not a KC-X/Y/Z tanker - the KC-46 is the X/Y airframe to replace the current 135 fleet and the Z is a strategic KC-10 tanker replacement in the 777 size class.
I can understand the wish to have atankrr to allow the F-35A to actual get within reach of any targets in the Pacific theatre - but on top of the escalating costs of that program, and the existing wish list of B-21 fleet and escorting PCA fighter, where is the money tree supposed to come from?
Air Mobility Command head calls for more survivable tanker fleet