While at Weap-Con Chuck and the team are shown items available for purchase like a mobile armoured interigation unit. While there, Casey, even though Sarah told him not to purchase anything, bought a Japanese laser pen which is later used to escape. Later on during a stand off, Chuck draws a pen identical to Casey's, but when he presses the button it is revealed to contain a knife which he throws using the Intersect. Although it is not known when Chuck aquires this pen.