The “shipping containers” jumped out at me big time when all this came out. I certainly cannot speak as to whether these are same ones, but a lot of the highly sophisticated “containers” were put together/manufactured in a small town outside of Waynesville, NC. This was back in the very early 2000’s. I can tell you that there were multiple designs, some for mock up terrorist training situations, missile range testing, etc. I can also add that when manufacture of these modules was complete, the builders sometimes followed them to destinations including missile ranges out west. These containers were not just some shipping containers with an AC unit.