Why Is Your Friend Who's Really Into UFOs Freaking Out About a General Who Vanished From Albuquerque?

On February 27th, Major General William Neil McCasland walked out of his Albuquerque home and vanished and the UFO community can't stop talking about it.
Here's a brief explainer for the average, non-UFO-engaged civilian.
For those already deep in the rabbit hole, we're staying close to the surface here. By all means, theorize away in the comments. But remember: McCasland is a real person who is missing. More eyes looking for him is a good thing. Just don't go overboard.
If you've seen Neil McCasland, call 505-468-7070 or text BCSO to 847411.