"We are conducting gang audits in each district, which means we are sitting down with a map, we are sitting down with the officers who work on those beats," McCarthy told ABC7. "We are sitting down with our intelligence personnel and we're mapping out who are the gang members, what turfs do they claim is theirs and who are they in conflict with."
McCarthy says the strategy is about responding to incidents before the retaliation begins.
Some of the shootings happened in the Austin, Lawndale and Roseland neighborhoods. There were also shootings in the Rogers Park, East Garfield Park and Archer Heights neighborhoods.
A memorial is still in place just steps from where 22-year-old Patrick Swinney was shot and killed in East Garfield Park Saturday afternoon.
"I never thought it would happen to him because he don't bother nobody, but you never know what's coming to you, you just have to deal with it," said Robin Roberts, Swinney's cousin.
In another shooting, a 13-year-old-boy was killed in front of his Brighton Park neighborhood home while he was hanging out with two friends on Saturday night.
Roberto "Adrian" Luna's family tells ABC 7 he was a good kid who was not mixed up in trouble. Police are still looking for three gunmen in that case.
On Friday night, just two blocks away from that shooting, 28-year-old Priscilla Mercado was shot on a second story balcony in the 4000 block of South Albany Avenue.
Police say a man standing in the street fired shots hitting her in the lower back. She died later at an area hospital.
"It is what comes around goes around," said Kiara Santana, Mercado's friend. "They shoot one, they go over there and shoot one. They come back, shoot another one. It's like a never ending story."
Mercado's friends and family say she was an innocent victim of violence and they think the bullets were meant for someone else.