Okay, here is my two-cents:
First of all, totally unrealistic that you would get all of these people with all of this intricate and varied knowledge in the same place at the same time. Scientists, paramedics and what not? Come on, get real?!How about just ten random people off the street and see what happens.
Secondly, this end of the world scenario has to be building up to the ultimate case in point.....and yet, not one person is armed!? They obviously don't come from Texas. In the days leading up to the event, I am almost positive that friends and I would be carrying 24/7.....we would not do so to be confrontational, but as a matter of protection and survival.
Perimeter security is non-existant in this 'Colony' (what did they think was going to happen?) Maybe they could call Nancy Pelosi (since it is in California) and she could tell the "baddies" to 'just stop it!'