CNN  —  By the time he was 18, Noah had lived in more foster homes than he could count, passed from family to family from the time he was a two-year-old. There was one year when he lived in more than 20 houses. Facing homelessness when he aged out of the system, he was given a lifeline when he found a place at Job Corps , the nation’s oldest and most prolific vocational job training program for young low-income Americans. Job Corps centers provide housing and schooling for students aged 16 to