A week has gone by, and the search for 19-year-old Rachel Cooke continues with the help of a private search organization, Texas EquuSearch.

"We have 300-plus people out, helicopters, mobile command center," said Tom Miller, director of the Houston-based search team.

Miller has been a part of 50 searches across Texas in the past year-and-a-half.

"Thirty-two have come home safe. We've recovered nine bodies. We got eight of no sign, and this is counting this one," he said.

Miller's daughter Laura disappeared in 1984. Her remains were found about two years later near his home. That's what makes this search group different than law enforcement. He and most of his members have personally been in the same situation like the Cooke's.

"They know that feeling of loneliness," Miller said. "They know that feeling that nobody cares."

Darrell Phillips is also a member of the nonprofit group. His sister has been missing for 16 years. "It gives me strength to help," he said. "It keeps me going."

The Williamson County Sheriff said the team is a great boost because it allows him to put his deputies back on their daily routine, and it adds people with so much expertise.

"The number of times they've done this, and such a recent past gives them excellent expertise on how they do it and methodology, and what they are doing," said Williamson County Sheriff John Maspero.

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"We've found them after they've been missing for three weeks, and got them home safe," he said. "We've got them home after being held by people after two weeks. So, I'm not going to pay attention to statistics, and we are going to hope that she is sleeping in her bed tonight."

The EquuSearch team plans on searching until there is no more land to scour for clues to Rachel's disappearance.

There are currently 2,500 members in the organization.