[DainBramage]

The one that survived had jumped over to a navy small boat and was on the larger ship assisting with the negotiations.

In other words he deserted ship to our side and was helping us.

[longtermmemmory]

per CNN, they had a cnn former fbi negotiator who said they had invited one of the four over as a negotiation ploy. Give him safe passage back and forth to create good rapport. But I believe this was before the rescue so this former negotiator was talking from negotions are always best spin.