VIDEO: One firefighter remains missing after fire burned through a Spring Valley assisted living facility, killing one resident and prompting dozens of middle-of-the-night rescues. "We have numerous teams looking through the rubble" for the missing firefighter, said Rockland County Director of Fire and Emergency Services Chris Kear. Flames broke out inside the Evergreen Court For Adults on Lafayette Street just after 1 a.m. Tuesday. Between 20 and 25 residents were rescued by firefighters what they described as a "chaotic scene." Some are being treated. One was pronounced dead at the hospital. A portion of the building collapsed as firefighters battled the blaze. The missing firefighter is believed to have been on the third floor, Kear said. He rushed into the burning building to rescue residents. Officials believe he got lost and could not find his way out. He was one of the first on the scene. He transmitted a mayday but other firefighters were unable to rescue him.