I looked it up: About a million firefighters in the US, including volunteer firefighters.

Having 1 in 10,000 of them convicted of arson each year is a wild statistic.

Your stats sent me into sobering-thoughts-mode...

More sobering thought: conviction rates are typically a small percentage of the people who do the foul deed. The definition of "arsonist", for example. What if someone started "just one" fire?

A more sobering thought: of the total fires fought each year, how many are started by those rogue firefighters?

A most sobering thought: why is it that there is so much fallow time, that they get bored?

This is the fact that’s literally a .0001% chance