I went over to a mates place on the weekend, he was playing COD Black Ops II campaign. it was a mission that had the option to hack an AGR and use if to your advantage. eventually all of the enemies were dead and the team following the player piled into the room. one soldier in particular, stood in one general spot the AGR was heading, the small tracked robotic device proceeded to ram into the soldiers leg, killing him immediately. my mate and I both looked at each other and burst out laughing at how a small machine just randomly rolled into a teammate and killed him. from now on, I've taken to calling them AGROs