Mr. Diaz , an information technology manager for a New Jersey chemical company , lives in Rutherford , N.J. , and writes wherever and whenever : using a notebook in a bouncy Humvee in a convoy in Iraq , using a recorder in a car on the Garden State Parkway , punching poem fragments into his cellphone when he was floored by the differences between New York and Abu Ghraib , where he was stationed for nine months in 2004 . ''