Question: Given the following context:  Joe Dirt is the janitor at a Los Angeles radio station. A producer drags him into the studio to talk live on the air with famous a disc jockey, shock jock Zander Kelly. Joe tells his life story. As a baby, he had a mullet wig installed because the top of his skull had never formed. At age 8, he was left behind by his parents and sister at the Grand Canyon. He does not know his real surname. After growing up in a series of foster homes and travelling on the road as a kid while camping in the woods, Joe arrived in Silvertown, a small town in the Pacific Northwest, where he met the beautiful Brandy and her dog, Charlie, and became a target for jealousy from Robby, the town bully. After Brandy's alcoholic father shoots Charlie dead, Joe decides to try to find his parents. He strikes up a friendship with Kicking Wing, an unsuccessful Native American fireworks salesman. In Indiana, Joe has an encounter with a skin cannibal named Buffalo Bob. This brings him unwanted attention from the media, but helps his search.  He travels to Louisiana and works as a high school janitor with "Clem Doore", a former NYC mobster in the Witness Protection Program, with whom he becomes good friends. Joe discovers the address of his old family home and travels to Baton Rouge. Listening to Joe's story, both Zander and the radio audience initially find him an object of scorn, but Joe's kindness and optimistic outlook on life, as well as his good-natured self deprecation, win them over.  answer the following question:  What is the former mobster's profession?
Answer:
high school janitor