For five days, search and rescue teams from across the Bay Area have been trying to find Berkeley runner Philip Kreycik, 37.
On Wednesday night, Alameda County's search and rescue mobile command center pulled out of the Foothill High School parking lot.
It marked the end of the large scale search that had been running at full steam the last five days.
Kreycik hasn't been seen or heard from since Saturday morning when he went for a run in Pleasanton Ridge Regional Park.
Earlier on Wednesday, search volunteers kept showing up at the staging area near Foothill High School to get briefed on the terrain and trails in the Pleasanton hills before heading out to the area where Kreycik was going to go jogging.
The search geared up again Tuesday night following social media reports of a possible cry for help heard in a canyon.
"We were very hopeful that we would find him last night, but obviously the search is going on," volunteer coordinator Sandy Schneider said. "You’ve seen the number of volunteers. The community support has been unbelievable."
With the formal law enforcement and volunteer search and rescue effort now wrapped up, authorities are going to continue with a more limited search where they are going to go through a lot of the maps.
They have created in the last five days and try to find any spots they may have missed.
Spots like drains and underpasses at the edge of this park will be revisited.
At certain points over the last five days, about 300 searchers and volunteers - as well as teams in planes and using drones scoured the hiking trails near Moller Ranch Park.
As the search and rescue scales down, the missing person's investigation by the Pleasanton police continues.
"First scenario is he is somewhere up in this ridge area, this park, open space area," Pleasanton police Lt. Erik Silacci said. "Second scenario is he parked his vehicle at the trailhead and he is somewhere else."
Kreycik’s family has been bolstered not only from the volunteer searchers but also crucial donations from virtually every store in the community.
"The family is overwhelmed with the support that they’re getting," Schneider said. "They are so grateful they don’t even know how to thank people."
Kreycik’s family said they are still planning a coordinated search but they are trying to figure out how to best focus their efforts.
Some of the volunteers who know Kreycik are becoming emotionally strained after so many days without finding any clues of where he is.