greybeard
As Roland reminds you - buying tired DC-10s and B767s makes sense if you want the tankers to last 10 years or so, which just means having to replace them again at the same time as the next tranche of KC-135 and the first tranche of KC-10. Even the RAF rejected that option (buying ex-airline 767s) and have so far resisted temptation to resurrect more Tristars.
Look how long the KC-135 fleet, built from new, have lasted until relief. Even if you do buy 10s or 767s from the desert, they don't have the glass cockpits and mods of even the Frankentanker so you're only getting something like what the Japanese and Italians are getting unless you rebuild them, and then what's the point?
It might be true that there is a lot of ANG experience on 767s today, but those pilots are flying some of those planes to the breakers yard right now. What about the future ANG pilots coming off glass 737/777/787 to fly a clockwork 767 or 10?
As for Lou Dobbs - he's a joke, an absolute hysteric who because he works for CNN gets a smidgen more cred than O'Reilly. He just had Jack Layton on his show the other day and anyone who is aware of current Canadian politics will know how dumb an invite that was.