Sebastian Junger returns to the men of Battle Company, the unit he and the late Tim Hetherington followed for Restrepo, to ask what the fighting in Afghanistan's Korengal Valley actually did to them. Built from footage shot during the 2007-2008 deployment and interviews filmed afterward, the film moves past the firefights that defined the earlier film and into the soldiers' own accounts of fear, boredom, loyalty, and loss inside the outpost the press nicknamed 'the deadliest place on earth.' Men who lost friends there describe combat as something closer to addiction than horror, and the film sits with that contradiction instead of resolving it. There are no politicians, no strategists, no wide view of the war's purpose, only the platoon's isolated world of sandbags, ridgelines, and the men on either side of them. Junger uses the same close, embedded camera style as Restrepo, but the questions here are quieter: not what happened in the Korengal, but what it left behind.