GARDINER, Mont. – On a typical day, helicopter pilot Mark Taylor might fly tourists or professional photographers above national parks in the West, scouting for wildlife and offering a birds-eye view of the mountains, geysers and waterfalls. 

But when historic flooding hit Yellowstone National Park this week, Taylor sprang into action and helped dozens evacuate from towns that couldn’t be evacuated by road. Park County law enforcement reached out to his Montana-based company, Rocky Mountain Rotors, needing a helicopter, and by the “Montana way of a handshake agreement,” he agreed.

“There’s just no questions asked,” Taylor told USA TODAY in an interview Wednesday. “We just go do the work and provide whatever helicopter services that they need.”

After offering his services, the phones were inundated with travelers and residents eager to quickly vacate the Yellowstone area as floodwaters swept away homes, eroded roads, ripped apart bridges and left some stranded. Entire towns were temporarily isolated without a way out after roads closed or were demolished by rushing water. 

The flooding continued to devastate the area Wednesday with rushing water reaching Montana’s largest city. The floodwaters in Billings, which boasts a population of 110,000, flooded farms and ranches and caused the shutdown of the area’s water treatment plant.

‘Nothing that we have ever seen’

Many who called were in Gardiner, a town of about 900 people just north of Yellowstone. People there were isolated for more than a day before roads reopened. Many were tourists, some with medical issues, who didn’t want to risk waiting for the Montana National Guard, which has rescued at least 87 people, according to the Department of Defense. Over the course of two days, Taylor was hired to pick up about 40 people from the local airport, including a cancer patient, two pregnant women, and a man who recently had a stroke. 

As Taylor flew around Yellowstone National Park and the surrounding communities, he watched debris, including huge pieces of houses, timber and even 1000-gallon propane tanks, float downstream as a river ate up massive swaths of land.

“It was obvious that this flood was like nothing that we have ever seen,” he said.

Yellowstone National Park flooding: Waters ‘still raging’; more than 10,000 visitors evacuated: What we know