Globe/T. Rob Brown
Junior Principal Greg Boyd directs students as they head to storm shelters during a tornado drill Tuesday afternoon, March 13, 2012, behind Joplin High School's junior and senior campus at Northpark Mall.

JoplinMissouriMOJHSHigh SchooltornadodrillprincipalGregBoydstudentssheltersNorthpark MallT. RobBrown