The B-70 was indeed an amazing device. It flew around
forty years ago, but by then was little more than a research vehicle. Here in the UK we were eagerly waiting for the TSR2....
How different nowadays
We could make the job of intercepting even a subsonic airliner quite difficult for a F3 even in a VC10, if a visident was needed under exercise RoE. Particularly if you turned off the Mode C and changed height to make the job harder for the Fighter Confusers. Listen in to the intercept frequency, work out which side they were displaced on, get out of the contrail levels then turn
very gently turn to confuse heading assessment and to thwart their stern conversion turn geometry, then turn it into a tailchase away from their base knowing the effect that prolonged flight with AB would have on a clean wing F3......