sounds about the same as the 2 german coppers sat at night clocking random speed figures on thier radar on deserted autobahn....... happened a few nights in a row, so they set up a road block further down, turns out it was 2 tornado pilots in a porche using night vision goggles with headlights off

Load of Bollox IMHO but you hear it bandied round the crewroom occasionally from the old farts who were out in Germany when we had bases there