The so called "Black Swans" just don't appear,although they have occurred - consider the civil unrest o the late 60's like the 1967 Detroit riots. There is always the possibility of a dinosaur killing, game changing event like a large asteroid impact, but this graph doesn't pretend to be a predictive model.

EMPs? People are killed by lightning strikes and similar phenomena all the time, but the overall numbers simply aren't that great, thus they are lumped in the "other causes" category. I must admit I am surprised at the relatively low number of firearm fatalities.

Day in and day out, the more common mechanisms of car accident, etc. are more likely to end your days than some exotic event. In either eventuality, a decent FAK along with the training and knowledge to employ it effectively will be useful.