NEWYou can now hear Fox News articles.TUCSON, Ariz. – Walking down the desert path that runs through the neighborhood, just a mile away from Nancy Guthrie’s home in Catalina Foothills near Tucson, retired Pima County sheriff’s lieutenant Bob Krygier pointed into the dense brush. “You can throw anything under the tree there, in that brush back here,” says Krygier. “We could walk by…I guarantee you that we’ve walked past things that were probably suspicious in nature. Dead animals, things like this, and you just won’t see them because the terrain itself acts a natural concealment for things. “He is in a “wash”. These are the paths that water uses to escape during heavy rains, also called ephemeral river, and they can be found all over Tucson and Pima County. He told Fox News Digital that there were “hundreds upon hundreds” of these in the county and city. “They are literally everywhere. It’s the geography, the terrain. “FORMER FBI AGENTS “STUNNED” BY UNFORGIVING CIRCUMSTANCES COMPLICATING THE NANCY GUTHRIE SEARCHThey could also be natural escape routes. He spent almost 30 years with the Pima County Sheriff’s Department. They are the lead agency for the search of the 84-year old mother of “Today’ co-host Savannah Guthrie. During that time he chased many suspects into washes. Authorities have recovered the remains of many other missing people over the years. SEARCH FOR NANCY GUTHIRIE ENTERS 5TH WEEK; CADAVER DOGS ARE ON HOLDSome are small. Some are narrow. A vehicle could fit in a situation such as that. “We’re there in five minutes.” “You could, you saw. We could drive down this street for 10 seconds, and be completely hidden from any road,” he said. “Now you have what you need: time and cover from prying eye. “FOLLOW FOX TRUE CRIME ON X” In the same area, on February 2, deputies responded an abandoned vehicle that was parked up the street near the entrance to the car wash. Fox News Digital requested records but has not yet received them. Sign up to get TRUE CRIME NEWSLETTERAnother neighbor flagged the route to Fox News Digital, saying she saw a suspicious person walking around that area on that day. She asked to remain anonymous due to her concern for the safety of her children in the wake of the unsolved investigation. Fox News Digital obtained Ring video from a neighbor that shows a vehicle heading away from Guthrie’s home just minutes after the suspected abduction. The video was given to the FBI in Feburary, but there haven’t been any updates since. Krygier said that they would have to know the area well because it’s not something you could stumble upon from Nancy’s home. “But it’s near enough that if I did some scouting weeks and days in advance, and there’s some evidence to suggest that they may have been here before that night, then this would be a place that I would look and say, “All right, let’s figure this out.” I can get from here to there without anyone noticing me. “LISTEN TO THE NEW PODCAST ‘CRIME AND JUSTICE WITH DONNA ROTUNNO’GUthrie is believed have been taken around 2:30 a.m., on February 1. She was not found despite searches by helicopter, plane and on foot. The search on foot, by plane and by helicopter failed to find her. Find out more on the TRUE CRIME HUB. The federal government provided a high-tech device that tried to pick up a Bluetooth signal from her pacemaker, but it failed. “At this stage, I can’t think of saying no to anyone who offers help, whether it is cadaver dog, the Cajun Navy, has popped up once again,” Krygier said to Fox News Digital. “Those are extra feet that I don’t pay for, quite honestly. If they find anything, that would be awesome. We wouldn’t have likely found it. If they don’t then great. I personally would accept some of the help. There’s no reason to not at this point. “There’s a combined reward more than $1.2M for information that cracks this case.CLICK HERE FOR THE FOX NEWS APPTo stay anonymous, contact Tucson 88-Crime Tip Line at (520) 882-7463.The Family is also urging anyone who has information to dial 1-800-CALL FBI.