A system for use in monitoring a building. The system comprises a heavier-than-air programmable aircraft (aircraft) of dimensions suitable for use in the building and adapted to move within the building in the air, a position determining system adapted to determine a relative position of the aircraft within any room of the building and acquire additional spatial information of any room within the building so that the aircraft can travel within the building, and wherein the position determining system is further adapted to facilitate generation of a three-dimensional image representing an interior space of the building, one or more communications systems adapted to be carried by the aircraft, and a processor system adapted to receive data and commands through use of the one or more communications systems, and facilitate generation of the three dimensional image of the interior space of the building through use of the position determining system.