(Image Source: Huffington Post)

BY MYCHAELA BRUNER

You're watching multisource US video news analysis from Newsy.

The massive wildfire in Arizona is now the largest in the state’s history and has crossed the border into parts of New Mexico.

“When you hear that freight train sound… That’s an indication that it is moving. It’s a sound that firefighters dread… The one that tells them they aren’t out of the woods yet. Daily Motion

Firefighters and crews are working hard to protect the community -- while Fox News reports authorities are questioning two individuals who may have started the Wallow fire by abandoning a campfire.

 “I should say ‘persons of interest.’ The flames burning 750 square miles in more than two weeks. That’s an area larger than New York, Chicago, Philadelphia, and Washington, D.C., combined.”

Reporter: “We’ve been told there’s more than two, but four or five they’ve talked to so far.”

MAN: “I don't think they have ruled out the catch fire was the only source at this point and they have identified this and a camp fire was the most likely source.

And as KPHO reports - authorities have also been writing down the names, addresses, and license plates of the visitors that make their way into the origin of the fire.

“Rumors and speculation have ravaged the communities of eastern Arizona. Residents have expressed anger as they watch the pristine forest go up in flames because of what they believe is irresponsibility on the part of visitors to the forest.”

Evacuation plans for Luna, New Mexico are still in schedule as the fire sets a new record at 469,000 acres.  The fire is not only the main concern—the smoke is deadly -- and KDKA explains -- this fire is especially persistent.  

“The extremely thick forest is making this fire worse. Firefighters say flames typically scorch only grasses and small trees on the forest floor, but this fire is skipping across tree tops.”

The Wallow Fire is far from being under control – however, the community and firefighters remain optimistic as they work to keep the fire from spreading across the border into Luna. According to the Associated Press - more than 30 homes have been destroyed and almost 500,000 acres engulfed. 

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Transcript by Newsy.