Over 40,000 residents have been ordered to evacuate in Orange County as crews work to address a hazardous chemical leak at a tank in Garden Grove. Authorities have raised alarms about the potential for a catastrophic explosion resulting from methyl methacrylate leaking from the tank. Confusion and panic ensued as thousands fled their homes amid fears of a chemical fire, with evacuation centers reaching capacity. Efforts are ongoing to cool the damaged tank and prevent an outbreak of toxic materials, with officials warning that immediate action was needed to avert disaster.