As SEngO on the RAF's first Jaguar squadron, not long after the end of he Cold War, driving the 'T-bird' with the boss in the front. Three other jets in loose formation heading home after an airshow east of Prague. The boss raises his hands above his head to subtly show who's steering. The other three squeeze in tight (would have thought they'd do the opposite!). "Start a left turn". I gingerly do as I'm told noticing two of the other jets staying firmly (ish) in the same place in the mirrors.....couldn't believe what was happening....."now look down". There below, the centre of Prague...who would have believed.....?