@foxnews: The defense is now taking its shot at the forensic evidence in the Charlie Kirk murder trial. Claudia Cowan reports the prosecution has rested its case, and defense attorneys are now challenging two of the state's key pillars: DNA and ballistics. After calling a forensic evidence expert earlier this week, the defense has now brought in an ATF firearms expert to argue there's no way the bullet fragments recovered during Charlie Kirk's autopsy can be conclusively linked to the alleged murder weapon tied to Tyler Robinson. Prosecutors maintain the evidence cannot exclude a positive match.