kiming americans. bill: ed henry from overseas traveling in warsaw, poland liergd coverage. martha: questions of whether sergeant bergdahl was a deserter or potentially a collaborator with the taliban. pentagon sources saying many in the intelligence community had serious concerns that he may have deserted his post and working in some way with the enemy. what is the pentagon saying on this now? reporter: the chairman of the joint chiefs of staff says he will not rule out investigating bergdahl for desertion. they are going to question members of his unit again.