Life imprisonment might be also appropriate.
As far as useful information that was obtained his his debriefing, it is good to know at least
some good has come out of this situation.  In terms of the prisoner exchange of Taliban/Al Queda
for Bergdahl, the positive is that our side gets a chance to kill them.
Personally, I am of the opinion that most of these Islamic fundamentalists should be executed on
the spot or soon after they are interrogated.  What is the point of keeping them in a place like
Guantanamo or a Federal prison somewhere. They are always going to pose a danger due to their
religious beliefs and desire to convert the entire world to Islam by force and death.