Why is Military Questioning Issue of Captured Marine?

The Marine captured the other day and threatened with beheading has not been heard from. But I find it curious why the military is all over themselves questioning whether he went AWOL before his capture.

I'm sorry, if he walked somewhere he shouldn't have, does this invalidate our responsibility to him and make it perfectly OK if he is beheaded? What nonsense is this? Spend the time trying to find and rescue him!