February 17, 2009 12:20 pm Roof Collapses (RAW) The roof of a commercial building partially collapses. US & World Videos 2:52 Severe weather kills at least 5 as tornadoes rip through Midwest and South 0:48 World Central Kitchen to resume operations in Gaza 3:41 Entry restricted at USC as protests continue on campus 0:44 Security guard shot at $12 million Encino home 3:26 Confrontations occur at UCLA campus amid ongoing protests