Nevertheless, Boeing have built a fair number of tankers.
But
nothing new for about 5 decades. Nothing new has been designed by Boeing since the KC-135 of the 1950s. Hanging (half-French, the hoorah rednecks will be disturbed to learn) CFM-56s off the ancient 135 to create the 135R is hardly a new design - neither was upgrading the avionics in the 'Pacer Craig' update. The KC-10A doesn't count, because that wasn't a Boeing design.
So now they're trying to keep the rednecks happy by modifying the jet that no-one else wants, the 767. Why not the 7-late-7? Well, in 2004 George Muellner, Boeing's senior vice-president and general manager air force systems, claimed that the 7-late-7 was 'unsuitable for the tanker mission'. "The issue is not composites, but its configuration", he said.....
Hello foot, meet twelve bore! (Twelve 'gage' to the colonials).
Face it - the intelligent customer chooses Airbus!