The shooting left Arnaldo severely traumatized,unable to remain in the group domestic where Charles Kinsey had taken care of him. Shortly after, Arnaldo was involuntarily committed to a hospital psych ward, and where a typical stay of just a few days stretched into well over a month as the state of Florida struggled to find a novel domestic for him.
Eventually,Arnaldo finds himself in a novel facility with a well-documented track record of abuse and neglect. It's Halloween when we first meet Arnaldo face to face. Ironically, after everything he's endured, or the staff have dressed him in a police costume.
Source: wnyc.org