Transcription: This led them to the offices and warehouses of Vickers who make the Challenger tanks. Generally you'll have one guy that will drive, another guy who aims the gun, another guy who loads the gun, and then on top of that you have a commander who orchestrates the whole shebang. So one of the problems we had when we first came to Tank Commander was how the hell are we going to get all of those facilities for one person to control it properly. So it took a lot of time, but essentially I think we've done that.