Which of the following is NOT a common duty of a security guard?

Making arrests is generally not a common duty of a security guard. Security guards typically do not have the same authority as law enforcement officers and are often trained to observe and report incidents rather than to take direct action like making arrests. Their responsibilities are usually focused on maintaining safety, deterring crime, and ensuring the protection of property and individuals.

In contrast, monitoring surveillance equipment, patrolling premises, and assisting with emergency procedures are all essential functions of a security guard's role. Monitoring surveillance equipment allows them to detect suspicious activities, while patrolling premises helps in preventing potential issues before they escalate. Assisting with emergency procedures, such as evacuations or providing first aid, showcases their preparedness to handle various situations, reinforcing their role in maintaining a safe environment.