Cities and counties across the state participated in a statewide tornado drill earlier this afternoon as part of Minnesota's Severe Weather Awareness Week. And in about a half an hour, many communities will activate their sirens as part of a second OPTIONAL drill scheduled for 6:55 tonight. But officials are concerned that in areas with ACTUAL severe weather tonight, residents might ignore "REAL" warning sirens -- thinking they're just drills. Barbara Fonkert is coordinating today's drills for the Division of Emergency Management. She says residents should always confirm what the drill means by listening to their weather radio or local broadcasters.