The family of a missing Brevard County man with Alzheimer's disease is getting some extra help this weekend.
Texas Equusearch is joining the search for Robert Harrison, 80, who was last seen a week ago.
Harrison's family has been desperate for answers as to where the man went.
Family members contacted Texas Equusearch a couple of days ago, and just like that, they're here searching this weekend.
About a dozen members of the Texas Equusearch Florida Chapter started searching Saturday morning.
Harrison was last seen the night of May 25, in the area of Milwaukee Avenue, near his home in West Melbourne.
The Brevard County Sheriff's Office used bloodhounds and its helicopter. The family has handed out hundreds of flyers, too. But the search has come up empty.
Texas Equusearch members said they're doing a methodical foot search in hopes of finding the man.
"We're going to search very thoroughly," said Harry Rogers, of Texas Equusearch. "I know people have been out here searching previously. We're going to go over some of those areas, and there may be areas that aren't very easy to access that may have been overlooked, and we're going to be going into those areas taking a real close look."
Bonnie Harrison, who is Harrison's daughter-in-law, said the family has knocked on every door they could knock on.
"We've been in every piece of woods we could, but he’s got to be somewhere," Bonnie Harrison said.
Searchers are also looking for items that may have been on Harrison, including his wallet, keys and one shoe. It's believed he left on foot.
If need be, Texas Equusearch members said they'll be back out looking again on Sunday.
Harrison is about 5 feet, 11 inches, weighing about 145 pounds with gray hair and hazel eyes.
He was wearing blue jeans, a white T-shirt with a gray/white Western-style shirt over it when he went missing a week ago.
Anyone with information on Harrison's whereabouts is asked to call the Brevard County Sheriff’s Office at 321-636-4665.