A question just crossed my mind about the stations. Why are they all undergrond? I can see why the Orchid and Swan as they need to be closer to the EM, also the Flame to get comms needs to be above ground. Its stations like the Pearl, Arrow, Staff that seem to throw me:
1) The pearl was a monitoring station but was built underground to monitor the Swan. If it was only to monitor the Swan then why build it underground outside of the sonar fence? After all the people inside the Swan weren’t allowed to leave until their tour was over with, and you would definetly know if they hadn’t pushed the button. So why the secrecy and why such a remote location wich would surely be outside the remit of the ‘truce’.
2)The Arrow was described by Goodwin as a storage facility again why build it outside of the fence. Obviously the reason to have it hidden was to keep it secret from the Hostiles.
3)The Staff is the medical station that seems to be better equipped than the med centre at the barracks. IT’S HIDDEN, of all the places you would want to be able to find easily it would be this place.
It seems to me as if the Dharma were in fact gearing up to remove the Hostiles. Placing the stations around strategically so when they decided to action the plan everything was ready. Is this the reason why the purge took place? Ben said ‘they were killed as they coudn’t live in harmony with the natives’. Did he tell Richard what they were upto and he decided to strike first?