Even if the military was tasked to fly these animals in, I doubt whether they'd get beyond the gates.
We had a bad enough time in this part of the world during the Hill Grove Farm cat protests of 1997:
BBC News | UK Politics | Controversial cat farm closes
In the era of Tw@tter and Far$ebook, the word would soon get around if any military blockade run of laboratory animals was to be attempted. Perhaps a few sympathetic Movers might 'accidentally' release a few dozen rats around the cargo hangar.......