shocking the wind was blowing in all over the world. old town superior was on fire. it s just unbelievable reporter: chaos and confusion as tens of thousands scrambled for their lives. right or left reporter: shoppers fleeing a costco with a doomsday scenario closing in. it almost seems like a tornado, a hurricane, a fire all in one. reporter: president biden promising federal assistance as today colorado s governor surveyed the damage from the air. entire communities now an apocalyptic wasteland. have you seen anything like this before well, nothing with the pace of this fire. this one was right in, you know, your neighborhood target, your neighborhood costco the hospital had to be evacuated. so this is a fast-moving urban and suburban fire. reporter: the estimated toll now upwards of 1,000 homes damaged or destroyed the marshall fire points to be the most destructive blaze in colorado history for property loss. the cause still under investigation.