California May 30, 2017 6:45 pm Mock Missiles Collide Over California Desert U.S. Air Force officials at Vandenberg Air Force Base launched a ground-based interceptor missile in a drill. Gordon Tokumatsu reports for the NBC4 News at 6 on Tuesday, May 30, 2017. US & World Videos 4:00 Firecrackers thrown at pro-Palestinian encampment during protester clash at UCLA 1:06 Interesting facts you never knew about The PGA Championship 1:45 NYPD enters Columbia University in riot gear to clear protest 6:17 Workers' comp claim denied after nurse's coworkers fail to give CPR 3:25 Little or no reaction from California officials on UCLA protest