Don Longo of Radius Investigations says if there’s an active shooter, barricade the door and line up against the walls. You want to steer clear of the gunman's line of fire, should he shoot through the door. In the Parkland school shooting, students hid in closets to dodge bullets. Experts say closets are a good place to hide, and everyday items can be turned into weapons to fight back. Turn off lights so the shooter thinks the room is empty. Also remember to put your cell phone on silent.