Matthew Apperson, accused of firing a gun at George Zimmerman on May 11, 2015, was arrested May 15. The day of the incident, Apperson’s lawyer said he had acted in self-defense. Apperson was originally charged with one count each of aggravated assault with a deadly weapon, aggravated battery with a deadly weapon, and firing a deadly missile into an occupied conveyance.  The assault and battery charges have been upgraded to attempted second-degree murder.