filmmaker and journalist, a new documentary called, "coren gaul." back to the valley in afghanistan developing deeper into the emotional reality of modern war. >> until you hear the snap of a bullet go by your head or hit your head, there's nothing else like it. >> we're getting engampled again because our guy, moving. >> [ bleep ] -- [ bleep ] -- ear drums out. >> get out of the blast. [ bleep ] [ bleep ]. >> pretty much -- here comes. oh! [ gunfire ] >> whew! >> your turn. come on [ bleep ], fire! >> oh, my. the new film is a follow-up to the oscar nominated war documentary titled "restrepo." talking to the filmmaker about why he made it and what we can