The Geospatial Multi-Agency Coordination Group, or GeoMAC, is an internet-based mapping tool originally designed for fire managers to access online maps of current fire locations and perimeters in the conterminous 48 states and Alaska. Perimeters are submitted to GeoMAC by field offices. The GeoMAC team attributes the perimeters using the IRWIN (Integrated Reporting of Wildland-Fire Information) system, and then posts them on the GeoMAC website and to an HTTP site for downloading. This file contains all fire perimeters that were submitted to GeoMAC by field offices for the current year. The projection is geographic and the datum is NAD83.