PHOENIX, Feb 7: Controversial Arizona lawman Joe Arpaio, who styles himself as “America’s Toughest Sheriff,” has enlisted action film star Steven Seagal to lead a training exercise for members of his armed volunteer posse on how to respond to a school shooting. The training event will involve six instructors leading 40 armed volunteers through a simulated shooting on Saturday, with teenagers acting as students, the sheriff’s office said in a statement. (agencies)