Spyflight covers alot of these flights. An old bold Andover driver told me many moons ago of flying on the corridor during the height of the cold war. A slow cruise along the very edge of the airway would usually provoke a Mig or two to come sniffing. Now for the fun bit; slowly pull the levers back and wait for the Mig to match speed. Soon the Mig is wobbling about, burner popping in and out trying to keep up (down?) with the Andover. Just as the Mig looks like falling out of the sky the Andover drops full flaps & puts the legs down. Mr Mig has two choices. Most of the time they charged off with the burner on but he told me of the rumour that at least one stalled in!