They do exist. About 10 or so years ago we went to Bali for 2 weeks and for the 3rd week we flew to Lombok. Lombok is a small and beautiful island an hours flight from Bali. On the 3rd morning of us being there the telephone rant at 8.00am and I was told there had been a terrorist coup and as it was very early staged it would be safer if we were to be evacuated. We were told we would be collected at 10.00am and taken to the airport where we would return to Bali.
An hour or so later we received a telephone call to say that the terrorists had seized the airport so we would be shipped off the island and not to panic but it was the Christians that were being killed! Anyway, we got taken to a beach where we spent about 9 hours waiting... Every so often a bus load of soldiers would arrive and with each bus load the guns got bigger. The Australian Ambassador was helicoptered in but he could do nothing. We spent all day on this beach in the baking heat with no shelter, no food and no drink. Eventually the boat arrived and we were put in small boats and taken to the main ship. We left all luggage on the beach as we were told to do and were told they may or may not get the luggage aboard.
When the small boats reached the big one the sea was very rough. Someone from the ship reached out to grab us, one at atime, but if both boats separated with the swell we had to let go of each other for safety, we had no life jackets and by now it was dark. Anyway, we made it safely back to Bali and were then bothered by the press wanting interviews. The next day we saw coverage on the TV and it was so organised and everyone had life jackets on etc. The difference TV can make eh? We had chaos and no one would tell us when the boat would arrive. We later learnt that the hotel next to the one we were staying had been burnt to the ground and people did die.
That's my holiday from hell...