(Woodbridge)- A Virginia high schooler is facing charges for allegedly firing a gun in class yesterday. Prince William County investigators say the gun went off when the 16-year-old was showing it to another classmate at Hylton High School in Woodbridge. The school was placed on lockdown for several hours as officers questioned the student and looked for the weapon, which was found hidden in a room connected to the class. The teen was taken to the juvenile detention center for possession of a firearm on school property.