Of course, many chiefs attend training seminars and conferences, and some of this training does involve the business side of running a police department. Training seminars for chiefs on things such as budgeting, grant writing and administrative issue are common at these conferences. Until a few years ago, security guard training was not regulated. Recently, several states across the country have implemented a mandatory minimum training time before licensing is allowed. Many states still do not have any basic training or background requirements for security officers.
Police officers have the authority to arrest a person for violating state or local laws.
Most states allow a police officer to arrest someone for a felony based on probable cause and for a misdemeanor if the offense was committed in the officer's presence. A security officer cannot arrest anyone, even if they see a shoplifting happen. They do not have that authority, which is usually defined in your state criminal law or criminal procedure statutes. A security officer can detain a shoplifter but calls a police officer to make the arrest. This means that either a business hires its own security officers or a business signs a contract with a private security company.