– Wall Street Journal – Many troops have lost a close friend in combat. Travis Williams lost them all. Marine Lance Cpl. Williams is the sole survivor of his 12-man squad. His comrades were wiped out by a roadside bomb in Iraq, leaving him physically unharmed but with psychological wounds that remain unhealed seven years later…Cases like that of Lance Cpl. Williams might constitute a different kind of mental injury from war, some clinicians are concluding, one that falls into less-understood categories of “traumatic loss” and “moral injury.”