This article gives an analysis of fire calls from over a decade of operations at a process facility complex operated by the Idaho National Laboratory. These data include valid alarms, unwanted or false alarms. ambulance calls, and hazardous material cleanup calls. Of special interest are false alarms, which are not only a nuisance to facility productivity but also are detrimental to public and facility safety. Of the fire calls listed here, over half were from false alarms. The results given are compared with National Fire Protection Association data. The data presented can serve as exemplar data for future facilities and can be compared with other operating facilities' experiences. (C) 2009 American Institute of Chemical Engineers Process Saf Prog 28: 15-23, 2009