I posted this earlier, but police work statistically isn't that dangerous.
There are about 421,000 police officers in the US.
https://www.statista.com/statistics/191694/number-of-law-enf...
If you look past Fox News sensationalist headlines, they said 146 were killed in the line of duty last year. http://www.foxnews.com/opinion/2017/06/11/americas-police-of...