PHOENIX -- A group of volunteers mixed with family and friends are continuing their search for a 25-year-old man who has been missing since mid-May.
Brian Histand, who moved to Phoenix last year, was last seen walking toward South Mountain on May 15. Volunteers are combing that area, 35th and Olney avenues, looking for any sign of him.
“We gave everyone a quarter to search, like a block area, and they searched it thoroughly and they're marking it off as they go,” explained Dayna Miller, who is organizing the search.
These areas are filled with a lot of desert, farmland and neighborhoods.
"“It's just kind of a messed up situation for sure," said RJ Orr, a good friend of Histand’s. "He just kind of disappeared into thin air. I mean it's nice all these people are here to help look for him."
An avid BMX rider, friends say Histand could be confused right now after suffering a concussion while riding his bike.
“A lot of people know Brian nationwide, and if they don't know him personally, they know of him," Histand's dad, Michael Histand, said. "There's a handful of people coming in from New Jersey, Florida and I had an old-time friend of mine from high-school days from Pennsylvania, he flew in yesterday and he's volunteering for the search. too."
The morning before Histand vanished, a police officer spotted him in a field -- naked. The officer let him go after determining he was coherent. Later, Histand's car and BMX bike were found near South Mountain, but there was no trace of Histand himself
“It's a roller-coaster ride from feeling overwhelmed with emotion, frustrations, sometimes anger, but today it feels really good, just the fact we have all these volunteers who don't know me," Michael Histand said. "They know of Brian and they're here, willing to help and the outreach is just fantastic."
While searchers didn't find Histand Saturday morning, his father did get a sense of relief when he heard that people have seen his son in the past week.
It gave him, and everyone looking for Histand, hope.
Nobody is giving up yet.