Former Marine Nicholas Burgin was assigned to "mortuary affairs" to retrieve the bodies of fallen marines in Iraq. He started experiencing nightmares and depression and taking Nyquil and other medications, and smoking heavily. A Navy doctor had him medevac'ed home and he was eventually discharged with personality disorder. "My depression got worse and I started to drift further from sanity and comfort, people noticed I was a different person," Burgin said. The VA eventually diagnosed him with chronic PTSD. (Nick Burgin)