September 16, 2011 5:08 pm Grocery Workers Build Picket Signs as Strike Looms One day after their union issued a notice of its intention to cancel a contract extension, Southern California grocery workers spent Friday assembling picket signs. US & World Videos 0:55 Thieves hit convenience stores in Orange County 2:21 Iranian president killed in helicopter crash 2:58 Helicopter carrying Iranian president crashes 2:33 Man steals LAPD cruiser with officer inside 2:24 Man steals LAPD patrol SUV in downtown LA