Fire is one of our best friends... and worst enemies.
Mother nature uses lightning fires to renew grasslands and forests, recycling deadwood, opening seeds, and making room for new growth. However, people cause an awful lot of fires through carelessness, also.
I've driven through burned areas in Canada and the US, sometimes just months after the fires had blacked the landscape, and was amazed how quickly greenery was sprouting.
As these pictures show, the forest will come back.
But this fire in AZ, happened in June of 1990. After 18 years, it's got a long way to go. Be careful.