Reporter: The destruction is staggering. Today, the black forest fire burned through a record, becoming colorado's most destructive wildfire ever. And we have right now 360 homes that are complete... See More
Reporter: The destruction is staggering. Today, the black forest fire burned through a record, becoming colorado's most destructive wildfire ever. And we have right now 360 homes that are complete losses. Reporter: These just a few of the many homes now burned to the ground. This was ted robertson's house that last time he saw it. When he came back, he found this. I have never lived through anything like this. Reporter: Now, military has joined the battle. Give me some water! Reporter: Firefighters from the air force academy just up the road, stomping flames on the ground. Planes and blackhawk helicopters bombing hotspots from above. 41,000 people under mont tear orders to evacuate. This is one of the houses in danger. You can see from the sign -- the people here are taking no chances. They're already gone. But check it out, before they left they mounted sprinklers on the roof and left them running just in case. The most important thing is the people and the animals. The rest is just stuff. Reporter: Mike trees and his families are leaving. Their escape complicated by a regular noah's ark -- four dogs, two horses, a miniature stallion, two cars and five kittens. Yout hunker down. You don't have any choice. Reporter: Mike's 93-year-old mother harriet made sure to save her cookbook, four generations of priceless family recipes. How far does this go back? Probably to my great grandmother, a lot of them. 125 years old. Reporter: This neighborhood has just come under mandatory evacuation, the cars now leaving. People are told to get in, get their families, their pets, don't pack, just get out. It's anybody's guess when they'll be able to come back home.
This transcript has been automatically generated and may not be 100% accurate.