emissions. >> shannon: all right, an interesting showdown there. if trace gallagher, thank you very much. shock in northern california where a gunman apparently randomly targeted seven locations, killing 4 people. it could have been most work if not for coursework by local elementary cool teacher who say they heard gunfire from a quarter mile away. the school went into lockdown and authority say that potentially prevented massive loss of life at the school. the gunman apparently left the school grounds and then was killed in a shoot-out with police. coming up, big news on tax reform. we will hear from congressional firebrand dave pratt. stick around. as a co