Abstract: A system, device and method deploys one or more cameras secured to ground-based and/or aerial devices along with one or more gunshot detection units (GDUs) to monitor an event for threats. Visual and audible signals received by the cameras and GDUs are sent to a central controller, which analyzes the received threat communications and issues appropriate communications according to a response protocol over a secure wireless network to intended recipients, including security/law enforcement personnel and members of the public attending the event. In various embodiments, a high intensity light source is provided for emitting high intensity light in the direction of any located gunshots or other relevant threat.