According to Connelly , " a fair number of changes " were made " to the world of Harry Bosch " " in making the shift from page to screen . " In the television series , Harry " is 47 years old and a veteran of the first Gulf War in 1991 , " when he was a member of a Special Forces team clearing tunnels , but " he has now been a police officer for twenty years , with a one-year exception when he re-upped with the Army after 9/11 , as many LAPD officers did . He came back to the force after serving in Afghanistan and again encountering tunnel warfare . " On November 4 , 2013 , the 13-day shoot began in Los Angeles , while Connelly kept a daily set journal
9/11
September 11 attacks
Bosch (TV series)