“Investigators believe a gunman who opened fire at Colorado’s Arapahoe High School had selected at least five spots he wanted to target on his rampage,” theeagle.com reports. “The Arapahoe County sheriff said Tuesday that letters and numbers corresponding to the labels of the school library and four adjacent classrooms were written in marker on Karl Pierson’s arm. Investigators are looking into who was in the rooms to see if those people were deliberate targets of the gunman.” The revelation adds weight to the “good guy with a gun stopped a bad guy with a gun” narrative that began when it became clear that armed Arapahoe High School Resource Officer Deputy James Englert‘s quick response hastened Pierson’s bloody demise. “Also found written on Pierson’s arm was a Latin phrase that translates to ‘The die has been cast.'” But not for parents, who still have a chance to repeal Bush the Elder’s Gun Free School Zones Act.