Patent ID: 8726782

Claim:
A barrier for placement on a supporting surface, the barrier comprising: a portable freestanding base assembly comprising a front wall, the front wall extending in a substantially upward direction relative to the supporting surface, the front wall having an upper edge remote from the supporting surface; a first member secured relative to the front wall such that downward vertical movement of the first member away from the upper edge of the front wall is prevented, at least a portion of the first member positioned below the upper edge of the front wall; a side channel formed at an angle relative to the first member, at least a portion of the side channel positioned beyond the upper edge of the front wall; and an upper wall comprising at least a portion that is substantially transparent and ballistic resistant, the upper wall having a lower edge, at least a portion of the lower edge received on the first member and a second portion of the upper wall received in the side channel, wherein the upper wall is received within and extends upward from the first member, the lower edge of the upper wall is positioned below the upper edge of the front wall, the upper edge of the upper wall is positioned above the upper edge of the front wall, and a portion of the upper wall overlaps with the front wall, and further wherein the upper wall is movable relative to the first member and removable from engagement with the first member and the side channel.