Article Photos: Police questioning of Zimmerman grew more pointed 12/24

Sanford, Fla., police officer Chris Serino identifies George Zimmerman in the courtroom during the 16th day of Zimmerman's trial in Seminole circuit court, in Sanford, Fla., Monday, July 1, 2013. Zimmerman has been charged with second-degree murder for the 2012 shooting death of Trayvon Martin.(AP Photo/Orlando Sentinel, Joe Burbank, Pool)