A criminal investigation was opened into a nursing home where eight died after the air-conditioning failed, a situation the governor called “unfathomable.” After a third rescue call, around 5 a.m., the hospital’s staff was concerned enough to walk down the street to check the building themselves. What they found was an oven. The Rehabilitation Center at Hollywood Hills needed to be evacuated immediately. Rescue units were hurrying its more than 100 residents out. Dozens of hospital workers established a command center outside, giving red wristbands to patients with critical, life-threatening conditions and yellow and green ones to those in better shape.