Captive or Deserter?

Did Bowe Bergdahl abandon his post or did the Taliban capture him? Did Bergdahl suffer as a prisoner or actively collaborate with America's enemies? Was Bergdahl taken against his will? Did Bergdahl desert? If Bergdahl willingly left his post, that is bad enough, but if he left his post to work with the Taliban, that is unforgivable. If Bergdahl is proven a deserter or a traitor, he must face the full wrath of military justice. In any event, the truth must be ferreted out because US service personnel died trying to find Bergdahl.