The male figure, who was Ms. Taylor’s boyfriend, Kenneth Walker, was standing with his hands stretched out, holding a gun, Sergeant Mattingly said. “My mind’s going, this ain’t right.”
When Mr. Walker fired, Sergeant Mattingly said, he felt a sensation of heat in his leg, and then returned fire six times, stumbling over and falling. He had been hit in the femoral artery, with the bullet tearing through his thigh and exiting out the back, according to his statement.
Detective Myles Cosgrove, 42, has been with the Police Department for more than 15 years, including the last three in the narcotics division.
He was the second person inside Ms. Taylor’s apartment after an officer with a battering ram tore the door of its hinges, and fired 16 rounds down the hallway after Mr. Walker shot in the direction of the officers.
Detective Brett Hankison, 44, had been an officer with the department since 2003 and was assigned to the narcotics division. He is the only one of the three officers who opened fire that night with a history of complaints of excessive force, as well as allegations of sexual misconduct.
According to a review of his personnel file obtained by The Times, nearly all of the complaints against him were dismissed or deemed not credible. But one record in his file showed he was reprimanded at least three times, including for causing a car wreck in 2016 that fractured the spine of another officer.
During the shooting, Mr. Hankison was initially positioned behind other officers, but after Mr. Walker opened fire, he ran out of the breezeway into the parking lot and fired at least 10 rounds into the sliding-glass door and window of Ms. Taylor’s apartment.