Which entities are involved in a guard's carrying of tear gas in California?

The correct answer identifies the Bureau of Security and Investigative Services (BSIS) and the Department of Justice (DOJ) as the entities involved in a guard's carrying of tear gas in California.

In California, the BSIS is the regulatory body that oversees security professionals, including those who carry less-lethal weapons like tear gas. The agency sets the training, licensing, and operational standards for security guards. On the other hand, the DOJ plays a key role in the enforcement of laws related to the possession and use of tear gas, providing guidelines and regulations that must be followed by security personnel.

The relationship between BSIS and DOJ ensures that security guards are appropriately trained, licensed, and legally permitted to carry and use tear gas in their line of duty, thus maintaining safety and compliance within the realm of private security.