[lelio]

Berg was working with terrorists but somehow betrayed them.

My leading possibility is "Berg was an enthusiatic lad and was interested in putting up cell towers and would work for anyone. He naively thought these people wanted to do some work and was captured."

What gets me about the still images from the video (I don't want to watch it) is that he looked really calm in the beginning. That makes me think that either he was in on some sort of scam (ie captured by fake terrorists and escaped) or he wanted to try and help the terrorists get someone released from prison. I sure as heck know if I was on camera with those nutballs I would be fighting for my life.

[gitmo]

I watched the video. He was very calm until he saw the knife. Then he screamed his head off. No pun intended.