Maybe they are heading to the border to stop the invasion-hope springs eternal.
The second video with all the tanks was in CA.
When I was a kid I lived near WAFB and we watched Minutemen come through town down highway 50 on a regular basis. But I never seen anything like that video around here. Some small to medium NG convoys recently but nothing THAT big. And as a kid I played by the train tracks daily.
I like your scenario.