I once had the pleasure of arriving at the designated Lat/Long in a TriStar tanker to dispense fuel to the (chasing) Phantoms. Having broke cloud we spotted the Bear D and took chase. My skipper was an ex Phantom driver who had previous experience of chasing these mighty propliners; anyway, we caught up with the Bear and formated off his right wing. Whilst waiting for the 'interceptors' we crossed beneath the Bear to formate on the left wing-tip... the noise from those propellors were akin to someone throwing pebbles on top of our fuselage... shock-waves from those supersonic tips!
The Phantoms arrived some ten-minutes later; took a drink, and escorted the Bear well to the north of the Shetland Isles.
A great day out!
Sadly, the skipper who I flew with on that day is no longer with us; 'Bumps' Rowley... top bloke; RIP Bumps.