Armed security guards are private security guards that are hired to protect an area, a person or persons from potential attack, hostilities or criminal activities. An armed security guard is hired, as a part of their duties, to: Prevent theft. ... Prevent or deter criminal activities.
Unarmed security guards Secures premises and personnel by patrolling property; monitoring surveillance equipment; inspecting buildings, equipment, and access points; permitting entry. Obtains help by sounding alarms. Prevents losses and damage by reporting irregularities; informing violators of policy and procedures; restraining trespassers