Two of the three people killed in a bar shooting in the New York City borough of Brooklyn were among the four shooters who opened fire inside the building, the city's police commissioner said Monday. Jamel Childs, 35, and Marvin St. Louis, 19, both of Brooklyn, were seen on surveillance video arguing in the Taste of the City Lounge in Crown Heights shortly before 3:30 a.m. Sunday, Commissioner Jessica Tisch said. About 10 minutes later, St. Louis approached Childs and opened fire, and Childs and two other men fired back.