Just a note from a mature Yank pilot. When I was first getting interested in commercial aviation around the middle Sixties, Flying magazine (US) had ads from most US carriers featuring the Concorde as the future of aviation. Best of all these were ads to hire pilots, along the lines of "this is your future as an airline pilot-supersonic flight. One offered, "we'll pay you over one million dollars over your career to fly for us." The carriers were TWA, Pan Am, American. The 747 was supposed to a passenger plane as an interim to supersonic flight, it would be a cargo plane. If can find an old magazine and figure out posting it here, I'll do so.
The other great Concorde fact was the variety of simple "rules of thumb" to deal with deceleration and descent over the alert areas off of NYC. CJ or M2, any comments?