This is an analysis to compute the probability of at least 15 witnesses dying UNNATURAL deaths within one year of the JFK assassination. The deaths were a combination of homicides, suicides, accidents and undetermined origin. It's all in the numbers. Take the tinfoil hats off, put your thinking caps on.. Assuming there were 1000 witnesses, the probability that at least 15 would die UNNATURAL deaths in the year following the assassination is: 1 out of 21,230 trillion, This result is the same order of magnitude of a famous prior, though slightly different, study: An actuary engaged by the London Times in 1963 computed the probability that 18 material witnesses would die (of any cause) within 3 years of the assassination as: 1 out of 100,000 trillion.