 Early in the season, Carver is criticized by Kima and McNulty for his lack of informants, and when asked by Colvin for descriptions of gang members and mid-level drug dealers, Carver is unable to provide any information.Before his forced retirement, Colvin criticizes Carver's work as an investigator and tells him he was not doing his job properly.He urges Carver to get to know the area he is policing rather than treating it as hostile territory in a war zone.