An old friend of mine told me that watching the first plane hit the World Trade Center from a commuter bus in Queens he assumed pilot error was to blame. (If only.) Like many editors, my friend saw the world as a conspiracy of errors and believed, despite my attempts to convince him otherwise, that emailing manuscripts resulted in digital corruption – the sort of thing where ‘too’ replaces ‘two’ or ‘to’. But mistakes do happen, sometimes with dire consequences, especially if they involve planes and missiles. The seventh deadliest aviation disaster in history – the tenth if you’re counting 9/11 – is the downing of Iranian Air Flight 655 by the USS Vincennes on 3 July 1988.