According to a news release from the Olympia Fire Department:
Firefighters were dispatched to the scene about 11:35 a.m. on a report of a fire alarm, and found smoke coming from the vents of the building. Crews evacuated 51 residents while the source of the smoke was investigated. Fire crews and the facility staff evacuated 51 residents while the source of the smoke was investigated. Residents were kept outside until the lobby was clear and secure. A transit bus responded to shelter residents but was not needed. Once the main lobby was secure, residents were moved back inside where they were given lunch while facility maintenance checked and rechecked the building. This fire response included four Olympia Engine Companies, one Ladder Company, two Medic Units, and a Command Unit. An additional ladder truck from Lacey Fire District 3 and an engine from McLane Fire District 9 also responded to the scene. There were no injuries to residents, or firefighters. Units remained on the scene until it was clear that there would be no more issues. The exact source of the smoke was determined to be an HVAC unit in one of the hallways.

