Security Guards Duties vary according to the needs of the job. Oftentimes Security Guards Duties will involve supervising other staff at precisely the same time as checking for possible threats or danger to staff and property. Security Guards Duties may also include supervising surveillance gear and frequently checking on the status of people and equipment in questionable or dangerous areas. Nearly all Security Guards Duties will involve blocking leaves and doors, making sure entrances are controlled, and running drug tests and breath tests, and hunting for weapons. Other duties may include informing tenants of these policies and rules pertaining to tenants, telling visitors of regulations and policies regarding pets, and checking for signs of forced entry or vandalism.