ANN ARBOR (WWJ) -- Ann Arbor Police call it the best example of what happens with everyone comes together with a common goal.
It was a community effort when volunteers joined with police to find and safe the life of a missing man with Parkinson's disease.
A former University of Michigan professor, 82-year-old Ralph Yang disappeared Monday night when he went for a walk, and didn't come home.
Police searched for several days in the sweltering heat, but decided they needed help, and two search parties were launched.
The Ann Arbor PD said 60 people showed up to help Tuesday afternoon.
But after word got out, Ann Arbor Police Sgt. Mark Pulford said more than 200 people joined the search effort overnight.
After 50-plus hours, Yang was found alive.
Pulford told WWJ's Pat Vitale a volunteer with a dog named Dolly made the discovery, through some thick brush off Newport Road.
"There was a creek that ran through there, and (he) located Mr. Yang who was partially responsive, partially unresponsive, kind of laying down in the creek. And our officers were able to get down there," Pulford said.
Yang was taken to a University of Michigan Hospital where he was treated and reunited with his family.
While there is no update on Yang's condition at this time, Pulford said he was expected to be OK.
"We're incredibly grateful to the community, the officers," Pulford said. "You know, everybody's just been out there. It's been hot, it's been humid, and just trekking through the woods and kept searching. So, we're extremely, extremely happy this morning."