Fire crews feverishly battled a wildfire Monday afternoon in northwest Spokane near the Convent of Holy Names off of West Fort George Wright Drive.

The fire started around 2:30 p.m. and burned at least five acres of grass and brush.

Then around 9:00 p.m., fire crews said the blaze was 100 percent contained. However, crews said they would remain in the area overnight for investigation.

Firefighters said no one was injured and no structures were damaged. They also said there's still no cause to what started the fire.

Although crews were busy battling the wildfire, they were also battling the extreme heat.

"They push their bodies really to the extreme," Assistant Fire Chief Brian Schaeffer said.

For the 100 firefighters who battled the fire, it felt like at least 120 degrees outside.

"It's extremely difficult and rigorous activity and you don't have a choice to say time out because a fire doesn't respect that," Schaeffer said.

When they get a break, they come to Peggy Crowder who's a Red Cross volunteer.

"These guys just work so hard. I have a new respect for them it's just amazing what they do in this heat, giving them water and snacks is just a small thing to do," Crowder said.

At a moment's notice, Crowder stops what she is doing and gets to work. "They just love it when we bring them snacks, cookies and chips because they need all the carbs they can get," she said.

These firefighters risk their lives. Peggy has dedicated hers to say thank you. 

"You really get back more than you give I have always said that," Crowder said.