translation.en: Pettengill was a 23-year-old vet who had planned to make the army a career, but then he got a severe back injury in Iraq, and that forced him to take a medical discharge.
translation.zh: 佩腾吉是一个23岁的老兵， 他原来想在军队里发展职业生涯， 但是在伊拉克受了严重的背伤 而被迫病退。