I at first thought is was a misprint. I can't tell if the guy has any law enforcement experience. According to the wikipedia a captain will lead a company in the Army a unit of 75~200 men. A bit of a step up to lead the state police.
Or another way of putting it, you have to be at least 21 in most cases to become a trooper, so if he had followed that path in life at most he would have had 8 years on the job.