PROVIDENCE, R.I. (AP) — Authorities have asked the public for any footage they might have of the gunman who fatally shot two students and wounded nine others at Brown University, even as they released a new video timeline and a slightly clearer image of a possible suspect. Investigators provided no indication Tuesday that they were any closer to zeroing in on his identity. In all the videos made public, the suspect’s face was masked or turned away, and authorities have only been able to give a vague description of him as being stocky and about 5 feet, 8 inches (173 centimeters) tall.