This is well known amongst law enforcement officers. I have two brothers in the California Highway Patrol, including one that's an instructor at the academy.

This is well known amongst law enforcement officers. I have two brothers in the California Highway Patrol, including one that's an instructor at the academy. CHP officers go through a rigorous 1 to 2 year application process that includes background checks and psych evaluations. After they are accepted, they live on premises at the academy for 7 months where they are instructed in the law (academically) as well as high speed driving, weapon handling, how to properly make a traffic stop (like coming up on the passenger side, not the driver side), how to investigate a crime, etc. My brother that's an instructor says that CHP officers are well aware that sheriff deputies and city police officers do not have a rigorous selection process and only receive 1-2 months training and that their interactions with them make that difference in training obvious. It's too bad there isn't a standard certification process to become a police officer like there is for many professions. Your manicurist likely had more training a tougher certification process than some police officers.