Some years back the Americans ran an impressive role playing exercise in Qatar asking a number of their citizens to join in the simulation of being airlifted by helicopter from the secure embassy compound to an offshore aircraft carrier.
Curious, I asked one of the British Embassy chappies what the equivalent plans were for her Majesty's subjects should the need arise. "Don't worry, old chap," he replied, "we have got a whole fleet of Morris Minors standing by".
I love a diplomatic with a sense of humour!