John Fleming started his firefighting career in Collingswood, NJ as a Fire Explorer when he was 14 years old. He then became a volunteer at that same fire department at age 18, where he was picked up two years later as a career fireman from 2002 to 2013. In 2013 he was hired by the Philadelphia Fire Department. He started at E35 (East Falls) for a cup of coffee then transferred to E41 (West Philly). He is currently signed to L24 (same house as E41).