<a gi-track='captionPersonalityLinkClicked' href=/galleries/search?phrase=George+Zimmerman&family=editorial&specificpeople=9042868 ng-click='$event.stopPropagation()'>George Zimmerman</a>, defendant in the killing of Trayvon Martin, arrives in Seminole circuit court with his attorney Mark O'Mara (L) for a pre-trial hearing April 30, 2013 in Sanford, Florida. Lawyers on both sides of the Trayvon Martin murder trial are jockeying for position as the trail is expected to start June 10. The defense seeks to add witnesses, but declines to identify them as the prosecution accuses them of grandstanding.