stilton
During the early years of Concorde testing and Airline service I had read it was used as a 'target' for practice interceptions by the RAF.
Really a question for my pilot friends, BUT.. I do recall that several years ago an RAF Tornado F3 requested permission to try a practice intercept on a JFK bound aircraft coming up to the accel' point... ATC relayed the request to the crew who had no objections, provided tha the rules of the air were obeyed, the ATC conversation went something like this.... 'OK, the Tornado is 15 miles astern of you.'. (at this point the burners are lit for the transonic acceleration).. ' he's 14 miles astern of you... 15..16....17...20... you can gues the rest, the F3 gave up in embarassment.
Dude