Summary: Fire units responded to a general fire alarm at a commercial building in Porter County, Indiana. Upon arrival, crews found no visible smoke or flames and no audible alarms. Investigation revealed a dry sprinkler system activation, particularly in the attic and drive canopy areas. Multiple units, including Engine 2 and Ladder 3, coordinated efforts to locate the source of the alarm and inspect the sprinkler and attic spaces. No immediate hazards or fire were found, and the situation was brought under control with ongoing monitoring.