briefed on the threat. brian ross, abc news, new york. classes resume today at the university of texas in austin after gunfire erupted on a sprawling campus. police had the school locked down when a student wearing a ski mask opened fire with an assault rifle. the shooter was identified as 19-year-old colton tooley. after opening fire he headed into a library where he turned the gun on himself. no other students were injured. a sky west airlines commuter jet was forced to make an emergency landing at milwaukee s airport after the landing gear got stuck. the incident was captured on a passenger s cell phone. 39 people were on board. luckily, no one was injured. last weekend a commuter jet made by the very same company also made an emergency landing here in new york after experiencing a similar problem. the head of california natural gas utility is proposing new restrictions on pipelines. that is after a pipeline explosion a few weeks ago in san bruno, california. eight people were