Cal. Business and Professions Code § 7583.5

(a) Every licensee and any person employed and compensated by a licensee, other lawful business, or public agency as a security guard or patrolperson, and who in the course of that employment or business carries a firearm, shall complete a course of training in the exercise of the power to arrest and the appropriate use of force and a course of training in the carrying and use of firearms. This subdivision shall not apply to armored vehicle guards hired prior to January 1, 1977. Armored vehicle guards hired on or after January 1, 1977, shall complete a course of training in the carrying and use of firearms, but shall not be required to complete a course of training in the exercise of the power to arrest and the appropriate use of force. The course of training in the carrying and use of firearms shall not be required of any employee who is not required or permitted by a licensee to carry or use firearms. The course in the carrying and use of firearms and the course of training in the exercise of the power to arrest and the appropriate use of force shall meet the standards which shall be prescribed by the Department of Consumer Affairs. The department shall encourage restraint and caution in the use of firearms. (b) No licensee or uniformed employee of a licensee shall carry or use any firearm unless the licensee or employee has in their possession a valid firearms qualification card. (c) This section shall become operative on July 1, 2023.