NM - Retired Maj. Gen. William Neil McCasland, 68, who led Air Force Research Laboratory. February 27th,2026

[sds71]

A woman on Facebook who said she had reported the information to authorities claimed she may have seen someone matching McCasland’s description around the same time he went missing on Friday near the Whitewash trailhead in Piedra Lisa Canyon.

In a post shared with the Albuquerque Trail Running Crew group, the woman named Mj Davis said the man was standing off to the side near a bridge over the arroyo at the start of the trail.

The Bernalillo County Sheriff’s Office (BCSO), which is leading the search, later responded in the same thread, reminding users to report tips directly to investigators, but did not publicly dispute the sighting.

UFO-linked Air Force general's disappearance takes new twist

New details have emerged in the disappearance of a retired US Air Force general linked to secret UFO programs as the FBI joins the search effort.

www.dailymail.co.uk

Here’s his FB:

Facebook

www.facebook.com

 

[swanniee11]

Facebook Albuquerque, New Mexico hiking group page
friends are posting here, it seems he just biked 60 miles the wkend before he went missing.

 

[MissPie]

Facebook Albuquerque, New Mexico hiking group page
friends are posting here, it seems he just biked 60 miles the wkend before he went missing.

If true, he does not sound like a person with any kind of advanced dementia.

 

[moonglow123]

I used to live 5 mins from where he disappeared ... there are definitely walking routes, arroyos, and mountain paths nearby but it's not exactly a place where you can disappear into thin air, at least IMO. I am genuinely surprised they haven't been able to find him by now if he disappeared off of one of the paths. Hopefully a lot of search parties are going out to cover more ground.

I hope it wasn't a self-harm issue or him wandering off for that purpose... since we're still unclear on whether he actually has cognitive issues, despite the Silver Alert. Agree that biking 60 miles would not exactly seem indicative of wandering off in confusion a week later.