I saw this video on Google where they create a reenactment of a real SAS operation scenario where a four-member team must infiltrate a certain area. They are supposed to be equipped with nearly 100 lbs of gear, all this in a backpack and in some kind of webbing vest with numerous pockets.

The reenactment is good but i'm interested in more details on how they manage to survive for such a long time in similar situations. For example, water procurement... do they carry water when they are first deployed? What amount? What kind of filters do they use? In the video, they go over their gear really fast so i'm curious to know more.

Does anyone have other on-line references where I could read up on this? I'm mostly interested in detailed gear information.

Thanks! <img src="/images/graemlins/cool.gif" alt="" />