A ballistic shield that is movable between an extended position and a retracted position is disclosed. In the extended position, the shield extends from the supporting surface to at least a height of a lower edge of a front wall of a ballistic barrier. In the extended position, the shield provides protection in an area corresponding to a gap between the front wall and the supporting surface. In the retracted position, the shield is removed relative to the supporting surface and provides clearance from the supporting surface.