cnn, describe mounting frustration with the mission and his superiors. >> he did talk about how he did not agree with the war effort in afghanistan, or the u.s. army -- the way we were handling our war. >> former sergeant was bergdahl's team leader. came to him one day with a curious question. >> he did come to me at one point and ask me -- he said, what would happen if my sensitive items go missing? >> like bergdahl's gun. >> it's obviously an incredibly huge ordeal. and there's a lot of backlash and it's important we find those items. it was a little odd he would ask me that question. >> soon after buetow found his weapon and other sensitive items like the night vision goggles, but the young soldier, the man himself, was gone. the final clues to where bowe bergdahl went when we come back. (mother vo) when i was pregnant...