AURORA, Colo. -- While no one was hurt and no structures were lost, the Arapahoe County sheriff is looking into why the bomb squad chose one of the windiest days of the month for a training session that eventually sparked a grassfire.

Sheriff Grayson Robinson is asking why "appropriate precautionary and safety measures were not utilized during this exercise." The inquiry started Friday night, soon after an incoming storm helped stop a grass fire in the 42000 block of East Quincy Avenue.

"I mean, you could hardly drive. It was pushing the truck around all the way out here," said Robert Harrington, a resident who was rushing back to two small children. "With winds like that, the fire was probably spreading faster than a normal person could run."

Indeed, the 24/7 Weather Center recorded wind gusts up to 60 mph Friday with sustained winds of 20 mph.

The National Weather Service had issued a Red Flag Warning Friday due to low humidity and high winds. A Red Flag Warning means that weather conditions are ripe for the rapid spread of any fire.

"Why would anybody ever have anything to do with any kind of flammables on day that's that windy?" Harrington said. "I think a lot of people are upset. This homestead here's been here for ... going on 40 years. It's all of our lives. And nobody said anything about anything when the fire was burning."

One home was evacuated as a precaution and roughly 200 acres of grassland burned. Some trees were still smoldering Monday afternoon.

Robinson said these kinds of internal investigations usually take a week to 10 days to complete. It's not known if the bomb squad will be fined.