The problem with this is that anyone who actually knows anything about this unit can't tell you anything.
What I have seen in the media that seems true to me is that about 80% of the unit is made up of rangers and most of the rest are seals with a few jarheads tossed in. That seems like it should be true but who would I be to know for sure.
I remember someone telling me one time that the Col Beckwith they were talking about thought he was another Custer. The rumor I heard was that he thought very highly of himself, but again, who knows.....