Guards, who are also called security officers, patrol and inspect property to protect against fire, theft, vandalism, terrorism, and illegal activity. These workers protect their employer's investment, enforce laws on the property, and deter criminal activity or other problems. They use radio and telephone communications to call for assistance from police, fire, or emergency medical services as the situation dictates. Security guards write comprehensive reports outlining their observations and activities during their assigned shift. They may also interview witnesses or victims, prepare case reports, and testify in court. Although all security guards perform many of the same duties, specific duties vary based on whether the guard works in a "static" security position or on a mobile patrol. Guards assigned to static security positions usually serve the client at one location for a specific length of time. These guards must become closely acquainted with the property and people associated with it and often monitor alarms and closed-circuit TV cameras. In contrast, guards assigned to mobile patrol duty drive or walk from location to location and conduct security checks within an assigned geographical zone. They may detain or arrest criminal violators, answer service calls concerning criminal activity or problems, and issue traffic violation warnings.
Guards who work in public buildings such as museums or art galleries protect paintings and exhibits by inspecting people and packages entering and leaving the building. In factories, laboratories, government buildings, data processing centers, and military bases, security officers protect information, products, computer codes, and defense secrets and check the credentials of people and vehicles entering and leaving the premises. Guards working at universities, parks, and sports stadiums perform crowd control, supervise parking and seating, and direct traffic. Security guards stationed at the entrance to bars and places of adult entertainment, such as nightclubs, prevent access by minors, collect cover charges at the door, maintain order among customers, and protect property and patrons.
Armored car guards protect money and valuables during transit. In addition, they protect individuals responsible for making commercial bank deposits from theft or bodily injury. When the armored car arrives at the door of a business, an armed guard enters, signs for the money, and returns to the truck with the valuables in hand. Carrying money between the truck and the business can be extremely hazardous for guards. Because of this risk, armored car guards usually wear bulletproof vests.
All security officers must show good judgment and common sense, follow directions and directives from supervisors, accurately testify in court, and follow company policy and guidelines. Guards should have a professional appearance and attitude and be able to interact with the public. They also must be able to take charge and direct others in emergencies or other dangerous incidents. In a large organization, the security manager is often in charge of a trained guard force divided into shifts, whereas in a small organization, a single worker may be responsible for all security.