Fire firefighters cut their way through a dangerous fire in Salt Lake City.
"It wasn't like a routine structure fire," said Capt. Kyle Lavender, Salt Lake City Fire Dept.
What's left of a trailer and RV had caught fire near 700 South and 1300 West. The flames were so hot they began melting the siding of nearby homes. The ABC 4 Utah Tower Camera captured the billowing smoking rising from the heat. People in neighborhood couldn't believe what they were seeing.
"There was big black smoke in the air," said Pua Tonga, witness.
"All of the sudden, you hear the electric cables bursting and then you see that whole tree went up in flames at once," said Coleen Salines, witness.
"I was scared that it would spread to my house or that it already had," said Caralee Young, nextdoor neighbor.
Tires and automotive equipment helped the fire grow. However, firefighters quickly arrived, knocked down the flames, and saved the homes next door. They said rapid respond was key.
"If we didn't get that kind of response, this does travel quickly, these structures that the siding melted due to heat, and it was only a matter of time before they would've been on fire themselves," said Lavender.
One of those homes belongs to Caralee Young, whose husband is in military out of state.
She's grateful firefighters stopped the blaze when they did.
"I don't know what I would do if my house burnt down and he was gone. So it's scary," said Young.
At last check, several homes were without power from this fire. ABC 4 Utah is told fire investigators are still trying to figure out what caused it.
Follow Brian Carlson on Twitter: @briancarlsontv