 What we've seen is a multinational effort to cross a U.S. Patriot battalion, has crossed a German river using a combined German and British bridge. Our armies are getting smaller and we may not all have the assets that we used to, so we need to rely on each other even more. Combined together with all our forces and equipment, there's nothing that we can't do. There's a lot of wide rivers throughout Europe, there's a lot of wide rivers throughout the world and in order to have our freedom to move around particularly in Europe, we need to be able to cross this sort of obstacle. As our armies have got smaller, the number of people with the capabilities to actually cross a wide, wet gap have reduced. We need to work together, we all have smaller armies, we all depend on each other to provide different capabilities and we always expect to work together. So to have this sort of exercise where we do practice that, working together in difficult shows, it gives us the skills we'll need should we actually find ourselves having to do it for real. We defend in a static location, but we are first and foremost a maneuverable asset. We did that in Iraq in 2003, we moved multiple units, four, five, six hundred kilometers into Iraq to protect maneuver forces and critical assets. So this is a skill that, yes, we most likely have not rehearsed or practiced in the last ten or twelve years due to other focus. But this is the basics that we need to get back to.