Flames, leaping from a valley home, made for some tense moments Sunday morning for fire crews on the Salt River Pima-Maricopa Indian Community.
The fire burned out of control, and it may have had something to do with what was inside one of those mobile homes.
People say they heard one explosion after another while they waited for firefighters to arrive.
The Salt River Fire Chief called this fire ferocious.
Crews responded within minutes of receiving 911 calls but already the fire had spread, engulfing a total of three homes.
The explosions could be heard loud and clear, one after another, the sirens deafening. Home video shot by a resident of the Shadow Mountain Village Trailer Park is terrifying to watch.
"The explosions, we just kept hearing a lot of pops -- a lot of pop-pops," said Linda Whittle.
The fire broke out around 7:30 a.m. By the time firefighters arrived it had destroyed three homes.
The one on the corner is barely recognizable.
"He's a handyman so there are a lot of chemicals in there and you can tell every time it would hit a chemical it would just flare up," said resident Didi Vernam. "The flames they kept coming up and going down."
The Salt River Fire chief kept crews out here throughout the morning as a precaution even after the flames were put out. That's because there was concern there were still flammable materials inside one of the trailers.
"The containment issue has to do with the home of origin and it has to do with its collapse, so we can't put anybody inside there, so we're in a defensive mode for that particular structure. That just takes us time," said Fire Chief David Bunce.
"The smoke was just horrible, it was just horrible and I said whoever's house it is, it's gone," said Ruthe Long.
Dozens of neighbors were evacuated because of the blaze. Many lost power. But they're all grateful the flames didn't do even more damage.
"It just bothers me that my neighbors are in this situation."
Scottsdale, Tempe, Phoenix and Mesa Fire departments assisted.
The cause of the fire remains under investigation. The good news is no one was hurt.