CHICAGO — The Park District of Highland Park reached a $80,000 settlement with a former employee who says he experienced post-traumatic stress disorder following a mass shooting he witnessed on the job, according to documents Raw Story exclusively received. Chris Maliszewski, a former recreation director for the Park District, was terminated from his job in December when he says he was unable to return to work after experiencing a panic attack on the job following an active shooter incident, news Raw Story broke earlier this year. The panic attack came 10 months after Maliszewski worked the Ch…