At 12:59 CO 15 was dispatched to Raymond Street for a AFA in a commercial structure. Chief 1502 arrived to find normal conditions from the exterior and held the box to a single engine response. Engine 15 arrived and made entry into the building. The crew searched the building and found nothing and the box was then placed in service. Units on scene: Chief 1502, Engine 15 and MICU 15. 18 members responded.