True, it is a Air Tanker, but there are features about it that need to remain classified.
Ignore some people. They regularly expose their gross ignorance of basic defense-related concepts, even if only a minority of us know it (because we've done such engineering work).
But in this case, that's why Airbus partnered with Northrop-Grumman. Any systems and other integration that covers US classified Secret, TS, Compartmentalized, etc... will be handled by Northrop-Grumman.
without Air Tankers, the US Air ***** and Navy could not operate. Those things are big targets in the air. If a enemy can figure out how to take them down, it will ground US air Operations.
In my personal opinion, I think the USAF did a 2-step.
First, they defined it as "oh, we only want a mid-sized tanker." But with all the delays as well as the whistle-blowing, they decided the DC-10 is getting aged too. So they changed the requirements to a "larger frame" that could possibly take over the DC-10s when they hit another 15+ years.
In that regard, the Boeing 777 would have been a much, much better choice than the 767 or just about anything Airbus has. I might be biased because I used to work for Boeing, but I would much rather be in a 757/767/777 than a A320/330/350 for safety, performance and record considerations.
This was a chronic requirements fuck-up, repeatedly. I think the USAF is still living in the cold war sometimes, at least until just a few years ago. They think they can keep buying toys. They need tankers, but planned on buying not only mid-sized now, but large ones in 10 years too.
Now they realized they should have just gone for an "one size fits all" model. The Boeing 777 was better there, just like the 767 was better at the mid-sized. Several core US allies had already bought the 767 model, just like many of the same allies bought F-15s and F-18s as well.
They are workhorse, quality, complex American-designed machines. One of the few things we still do good. God help us when we lose that.