Summary: Tacoma Fire units (Engine 2, Engine 4, Ladder 1, Battalion 1) responded to an automatic commercial fire alarm at 1554 Market Street. Upon arrival, Engine 2 assumed command and reported a seven-story apartment complex with no visible fire or evacuation. The incident was investigated in high-rise mode, with Engine 4 assigned as lobby control. After investigation, no fire was found, and the building was placed on Firewatch. Command was terminated, and units were made available.