What crime did the off-duty security guard commit by entering the courthouse with his revolver?

The crime committed by the off-duty security guard by entering the courthouse with his revolver is classified as possession of a firearm in a prohibited location. Courthouses are designated gun-free zones due to their sensitive environment, which requires a high level of security and safety for both public and staff. The law typically prohibits individuals from carrying firearms in these locations to prevent potential violence and ensure a safe environment for legal proceedings.

In this context, even if the individual is a security guard trained to carry a firearm, the specific regulation regarding firearms in courthouses applies universally. Even authorized personnel may require specific permissions or conditions to carry weapons in such secure areas.

Understanding this, adherence to the restrictions placed on firearm possession within certain locations, like courthouses, is critical to maintaining public safety and the integrity of judicial proceedings.