 After the Tippit shooting, a description of Oswald came out, and it was noticed that the description of the man who shot the police officer was very similar to the description given after the president was shot.Oswald fled and was later captured in a nearby movie theater.Later the same evening Brennan identified Oswald in a police lineup as the person who most closely resembled the man in the window, but Brennan said he was unable to make a positive identification.