Like the other posters say. .22 small caliber dont do much damage as the bigger caliber.

Also, many cops use PEDS-performance enhancing drugs like steroids, HGH-Human Growth Hormones and other peds. Some use cocaine while on the job which keeps their heart pumping irregularly fast. Some also carry pain killers and adrenaline shots which keeps them alive with their hearts pumpong fast.

But above all God gave them a helping hand