Live Breaking News & Updates on 20th engineering battalion hunts roadside bombs

Rampage by a lone gunman last november. at first, carroll thought the shooting was a joke. then, after being hit by two bullets, carroll says he came face to face with the suspected shooter, major nadal hassan. me and him looked at each other and all you re thinking is [ bleep ]. you know? damn it, i m dead. he fired off two shots. one went past the ear and the other hit me in the leg. reporter: by the time the smoke cleared, 13 people were dead. carroll s company lost three soldiers that day. it s bumpy. reporter: three months later the company deployed to afghanistan. despite the rounds, carroll was determined to be there with him. you won t make it. you won t make it. i like proving people wrong. it s my thing, i guess. reporter: in afghanistan, the 20th engineering battalion hunts ....

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