15-year-old boy who has not been identified by name have also been charged in the shooting.
WATCH: Raw surveillance video of attempted carjacking, shooting
Chicago police released this surveillance video of the attempted carjacking and shootout that killled retired Chicago firefighter Dwain Williams in Morgan Park.
Williams, a beloved retired CFD lieutenant, was walking out of a popcorn shop in Morgan Park at 117th Street and Western Avenue on Dec. 3. Surveillance video captured the shooting exchange with Williams and the group trying to approach him. Williams was hit and later died.
Mayor Lightfoot, Chicago police discuss charges in firefighter s death