Ever see a military convoy or train transport? I have several times back in California as they shift assets for different trainings in different places. Humvees, Bradley FV's, and M1A-Abrams tanks loaded on trains in the high desert near logistics bases near Yermo and Barstow, and shipped to wherever, or coming back there for storage after training. On a smaller scale, probably most have seen smaller convoys of vehicles on National Guard training-- None of it too unusual.
Then there are people who stoke fear....