Douglas MacGregor 🇨🇦

@bronfoth It’s my understanding that the phone would have to be no more than 3-6 feet away to potentially reconnect with the pacemaker. If you have a very specific search area, methods such as HRD teams, metal detectors, and LiDAR would be more efficient and resourceful.

@TheGeoProfiler @TheGeoProfiler Could searchers use the pre-existing connection between Nancy's pacemaker & iPhone? Devices will reconnect when in close proximity, dependent on cell coverage (can be boosted) Phone could be carried by search dog or human, monitored real-time by FBI #NancyGuthrie

Not disagreeing if you have an idea of where to look, but it also defies logic to send out HRD teams if you have no idea of where to search. They are a finite resource that are susceptible to terrain, heat, injury, and exhaustion. Search area identification and prioritization is critical with HRD teams. #NancyGuthrie

@conlin_lauren I would think IR would be able to discern between rock and human signatures at night, even during the day. Being in a crevasse may complicate things, but I would definitely still be trying.

Is this normal? “We couldn’t differentiate from heat signatures and the heat from the rocks.” The Bernalillo County Sheriff's Office said the search for retired Air Force Gen. William Neil McCasland has been "hindered by an unseasonably warm spring"......The UFO expert vanished without a trace on February 27. facebook.com/watch/live/?re…

@jcow1969 I’ll have to give it a listen. My favourite book about Dahmer is ‘A Father’s Story’, which is not really about Jeffrey either.

When researching for this series, I listened to My Son Jeffrey: The Dahmer Family Tapes. I thought it was fascinating to hear conversations between Dahmer and his father, and I didn’t expect to come away as intrigued by his father as I was.

Thank you Jesse Weber for having me on last to talk about the critical dates regarding the Nancy Guthrie disappearance. Law Enforcement has zeroed in on January 11, 24, and 31! #crimescene #kidnapping #nancyguthrie #SavannahGuthrie

Thank you @JohnDePetroshow for having me on this afternoon. Continue with the great coverage and bringing awareness to Nancy’s case! #NancyGuthrie

Love that. I grew up using paper maps as well, for navigating and orienteering. It’s a lost art! I also used ArcGIS in my crime analysis and crime mapping classes, but most of that work is dedicated to crime prevention. I emphasize operational mapping for investigators. No GIS needed!

@TheGeoProfiler I learned to use ArcGIS in my intel crime analysis training. Fascinating. I love this sort of thing. The irony of this whole thing was my dad taught me to use paper maps when I learned to drive. He said I had a lousy sense of direction. He was afraid I would get lost frequently.

NEW VIDEO‼️ Here’s the latest instalment in my Mapping Series. If you’re new to mapping and Google Earth, follow along! I give out tips, tricks, and techniques in every video that I use when mapping and geographic profiling! Getting Started with Google Earth Pro - Adding Placemarks youtu.be/Y97e38uXjQg?si… via @YouTube #GeographicProfiling #mapping

Good question. From a behavioural perspective the east is viable, but less likely. Offenders generally look for quick and direct routes when exiting a crime. Oracle Rd (77) provides quick access to I-10 and greater Tucson. Heading east just surrounds you with additional affluent neighborhoods. Again, possible, but not probable.

@TheGeoProfiler @PodcastSTS Why is everyone assuming the perp traveled from the west side and not from the east? All roadway maps have shown traveling from the west.

This map is interesting and very similar to the optimal exit route I identified in my map below, which I explained on @PodcastSTS. The route is direct, remote, dark, and has minimal or no traffic cameras. #NancyGuthrie

NANCY GUTHRIE: Day 45 since Nancy Guthrie vanished. Geo-profiler Douglas MacGregor says the available clues could indicate a “repeat, pattern-based offender.” In our @LAmag interview, he explains the three possibilities investigators may be considering. Full interview below. @TheGeoProfiler youtu.be/LIzxFxblVhA?si…

Thank you @conlin_lauren for having me on this morning. Hopefully someone knows something and Nancy Guthrie is returned to her family. #NancyGuthrie

Missing Persons Cases Explained | Dr. Lorna Ferguson on the Truth Beyond Serial Killers x.com/i/broadcasts/1…

Both great ideas. Enough people already carry bear spray when hiking and jogging to deter “bears”, might as well just call it what it is! #safety

In his recent NBC interview, Sheriff Nanos suggests that the offender could absolutely strike again. That’s a far leap from stopping short of reassuring the public that there is no cause for concern. To me this suggests that LE’s theory and evidence is leaning towards a repeat, pattern-based offender. The Sheriff’s warning may be based on an existing series of similar and potentially linked crimes, or it may simply suggest that LE’s theory involves a motive and suspect profile that implies a high probability of prior or repeat offending. Based on his comments and the known facts — burglary/theft, SA, homicide, or a combination thereof, would be the most likely motives. Serial abductions/kidnappings (ie Ariel Castro) are much rarer than serial murder. At face value this warning appears to reveal the direction of the investigation, narrows the list of possible motives, and indirectly suggests that certain people, motives, and theories are lower on the list of investigative priorities. Lastly, it still seems that LE is trying to determine whether this is a targeted crime. Keep in mind that a crime can be semi-targeted. For example, an offender could target elderly people, women, affluent neighbourhoods, or vacant houses while maintaining flexibility as to the exact target itself. Hopefully the Sheriff’s Office has implemented some measures to accompany the Sheriff’s comments, such as increased patrols. Remain vigilant, lookout for your neighbours, and stay safe! 🗺️ #NancyGuthrie

NANCY GUTHRIE: The Pima County Sheriff now issues a safety warning…after 40 days. What’s wild is that @JoeGiacalone raised this exact issue two days ago during our @lamag interview 🤔

🚨Nancy Guthrie: New statement today Pima County Sheriff’s Office on Guthrie Investigation 3/13 The Pima County Sheriff’s Department continues to analyze various forms of evidence in the Nancy Guthrie case, including material from laboratories as well as images and videos captured by cameras.   At this time, we will not comment on the details or status of this analysis. New video about the DNA premieres on my YouTube Channel The Ingle Edit with DNA expert @SRyan4n6DNA Saturday 9am youtu.be/dR7qsrj9bHs?si…

The individual who texted the family was caught using digital forensics and LE likely requested a keyword search warrant from Google. A keyword warrant is a type of reverse warrant, but different from a geofence warrant. I’ve heard mention of acquiring cell tower dumps related to the case, but I don’t recall any public mention of requesting geofence warrants.

@TheGeoProfiler They allready done that. That's how google contact the FBI that someone was activly searching on Savannah Guthrie networth and Nancy Guthrie's house. Also the guy with the fake TMZ note is also detained by geofencing his whereabouts

YES!! Geofencing should be a primary tool for all investigators! This is what I was speaking about on @PodcastSTS this week. Different Nancy, same amazing investigative tool! #NancyGuthrie

@PattyDeLeo2 @PodcastSTS Unless the initial plan was to take her, the likely scenario would probably be to remove evidence.

@TheGeoProfiler @PodcastSTS then why take her? it’s more work and effort to get her out than just do what he or they were going to do to her inside. makes NO SENSE.

Here’s the Coles Notes regarding my thoughts on the #NancyGuthrie investigation, which I shared on @PodcastSTS tonight. I’m working off public information like everyone else and my thoughts are based on that information at this moment in time. 1/x One theory floating around is a botched nighttime robbery. Nighttime robberies are uncommon, but they do happen. Nancy’s home is more at risk for a nighttime robbery for the following reasons: - Expensive neighborhood - Quiet neighborhood - Properties set back from road - Large lots limit neighbor proximity and visibility - Properties concealed by vegetation - Darkness intentional to limit light pollution