It is little known that most police officers are not gun guys and girls. Some police officers own not a single firearm, only their issued duty handgun, and rarely, if ever, carry it off duty. Others, recognizing the necessity of at least basic firearm competence, do take the responsibility seriously. Relatively rare is the officer that spends their own time and money to buy firearms, ammunition, and training to develop a high level of skill.
In some places, police officers are significantly hampered by the very bad political choices of their agencies. New York City is a prime example. As I noted in a September, 2013 article—New York City Police Shoot Up the Citizenry Again–where I wrote about one of several shootings where the police, in legitimately (mostly) trying to shoot bad guys, accidently shot citizens instead, in one case, shooting not only the bad guy, but nine innocent bystanders.