William Poole , 52 , was killed in North Carolina , Gastonia , on Monday night . He opened fire on police while sitting on a lawnmower outside his house . Earlier that night he called veterans ' crisis line and said he was suicidal .
William Poole , 52 , was killed in Gastonia , North Carolina , on Monday night . He opened fire on police while sitting on a lawnmower outside his house . Earlier that night he called veterans ' crisis line and said he was suicidal .