Mike Dorsett, right, of the Vicksburg Area Chapter of the American Red Cross, shows Warren Central High School students the ins and outs of the ERV, or emergency response vehicle, which is used to distribute food and water after a disaster. The tour was organized for National Preparedness Month. Seated is Jula Jones, 18, the son of London Williams and Patricia Williams. Standing beside Dorsett is Shamekia Johnson, 17, the daughter of Joe Parson and Regina Dunbar. Outside the ERV is Sheridan Melchor, 17, the daughter of Mack and Marguerite Park. (Katie Carter*The Vicksburg Post)