March 3, 2009 4:36 pm Courtroom Battle for Emerald Begins Tuesday was the first day in a courtroom battle for an emerald worth millions of dollars. US & World Videos 3:18 USC's commencement preparation includes increased security patrol 1:56 1 person killed after car crashes into South LA church 3:30 Protest on USC campus continues ahead of graduation 0:58 Mystik Dan wins 150th Kentucky Derby in photo finish 0:43 LA County releases sterile mosquitoes as warmer weather nears