Fruitcake anybody?
There's a similar bunch of fruitcakes who spend their lives trying to get into the caverns under Rudloe and the Box Tunnel (can't remember the site address sadly).
Basically they've rumbled that the caves are where we store UFOs that we've captured. We also store ones from other countries there too; they're flown into Lyneham in the back of Hercs (so they're obviuosly SWB UFOs then), then taken by the secret tunnel to Rudloe.....
......................now the voices are telling me to go out and kill women..................