A security system for monitoring a property includes a plurality of sensor units disposed at different locations throughout the property, an autonomous vehicle that travels throughout the property and contains a camera, and a central station, in communication with the sensor units and the autonomous vehicle, that dispatches the autonomous vehicle to a location corresponding to an unknown object detected by at least some of the sensor units and determined by a processing module of the central station to be a potential intrusion, wherein the autonomous vehicle provides video data of the potential intrusion to the central station. The autonomous vehicle may be a flying vehicle. The autonomous vehicle may be dispatched to a vantage point that is clear of any obstacles and provides an unobstructed view of the location of the potential intruder. A user of the device may approve dispatching the autonomous vehicle.