 The murder weapon was a small caliber handgun that was easier to hide than the larger handguns issued by police departments.The killer apparently knew how to use a smaller weapon to ensure that Cabrera was killed by one shot, without the need for a second.The forensic analysts believe that he stood behind her, held her head with his left hand, forced the muzzle of the gun against her neck, and fired while standing with his knees slightly flexed.