Described are techniques that use an autonomous mobile unmanned machine that includes at least one sensor device suitable to verify an alarm condition. Upon assertion of an alarm condition message asserted as a result of a potential alarm condition existing within a facility, the machine receives a location of the alarm condition and is programmed with a route from a current location of the autonomous mobile unmanned machine to the location of the alarm condition. The at least one sensor device carried by the autonomous mobile unmanned machine collects sensor data at least at the location of the alarm condition and the machine sends to a system a message pertaining to status of the alarm condition.