NEW : Bachmann took the notice and volunteered to serve it himself , Hamlin said . The gunman apologized as he lay dying , a medic and witness says . Police : Brian Bachmann was the gunman who killed four and injured two . He was fatally shot by police in Texas , Texas . Among the victims was Thomas Caffall , a highly regarded law enforcement officer .
NEW : The gunman apologized as he lay dying , a medic and witness says . Police : Brian Bachmann was the gunman who killed four and injured two . He was fatally shot by police in Texas , Texas . Among the victims was Thomas Caffall , a highly regarded law enforcement officer .