allies out the country and tells cnn about his frustration about the end of the war. saying "all the friends i lost in afghanistan, what were their deaths for, what was their sacrifice for if this was the end state?" hundreds of thousands were deployed there over two decades. their sacrifices perhaps most memorably recorded in the 2010 documentary "restrepo," which spent one year with one battalion in an isolated outpost in afghanistan. i want to show you a clip and then spend some time with one of the co-directors, sebastian junger. it's intense and violent but we want you to see it to understand the emotions so many are now experiencing. >> ied. >> keep going! keep going! [ gunfire ] >> what are we doing? >> hey.