Over time multiple large container-like structures were delivered and installed, and interconnected with pipes.
Perhaps a training exercise for A&M students?
And then in a few weeks the structures and interconnections were gone, and the site cleaned up, the flags were removed. What was left was a fenced gravel pad, with 4 empty flag poles.
A few months passed and the equipment, pipes and flying flags were back. Definitely training, but perhaps the employees of GCT, as the owner of GCT is a proud graduate of Texas A&M.
But still a strange place to hold training, miles from anywhere..