The security guards make their rounds and the generator / cooling tower yard is on the route. This happens all day long along with my routine inspections. In critical areas, they are instructed to observe and in certain cases document the status of certain pieces of equipment. Anything out of the ordinary; readings beyond what is posted as normal for that piece of equipment, temperatures which seem out of range are brought to my attention for investigation. Most critical areas and equipment have a variety of sensors but we have always had visual, regular inspections of all building systems.This involves us training security in the operation of the building systems most critical to safety or most likely to cause major physical or fiscal damage if not detected early.