Which of the following is NOT a prohibited type of second employment?

The correct answer indicates that being a private investigator is not classified as a prohibited type of second employment for certain law enforcement personnel. This designation is significant because private investigators often operate in a capacity that can be complementary to law enforcement duties. They may utilize their skills and training in a legitimate, lawful manner, which can enhance their professional experience and contribute positively to their primary roles within law enforcement agencies.

In contrast, the other options—working for a wrecker company, a pawnshop, or as a bouncer—pose potential conflicts of interest or ethical dilemmas that could compromise law enforcement integrity or public trust. For instance, jobs like being a bouncer or operating a pawnshop may lead to situations where law enforcement personnel's judgment could be questioned, or where their involvement might be seen as biased or inappropriate given their primary responsibilities. Thus, these roles are typically prohibited to ensure that law enforcement officers maintain the public's confidence and uphold the ethical standards of their profession.