 Hi, I'm news correspondent Bob Woodruff. In 2006, a roadside bomb struck the armored vehicle I was riding in while reporting from Iraq. I sustained a life-threatening traumatic brain injury. The military term, got your six, means I have your back. And that day, our service members had mine. During my recovery, I learned firsthand the challenges facing our service members who return home with injuries. While serving, their fellow service members always had their sixs.