Firefighters arrived on scene to find heavy smoke coming from a 4-story office building and upgraded the response. They made an attack and checked for extension, clearing the stairwells, and opening the roof hatch. The sprinkler system had controlled and extinguished a drink cooler that had overheated and caught fire. Crews controlled the sprinkler system and ventilated the smoke from the structure. The building was turned over to the building maintenance staff on site. 60 personnel were dispatched to this incident, including firefighters from Stations 2, 28, 68, 83, 10, 60, 69, 73, 17, 57 and Rehab 8.