 The Polish-Canadian U.S. forces are doing explosive, mechanical, and a ballistic breach class. Today is an inert day. We're just teaching how to do it without live rounds tomorrow. Everything's going to be live on the range. We said entry versus breach. What's the definition again? The difference between entry and breach? Well, the breach is what? A force. So everybody's going to learn to build two types of charges, a collar charge for door handles and a flex linear for the whole door. And we're going to teach both nations familiarization after that. Canadians are going to show us some of their urban breaching techniques. We're going to show them some of ours and the soldiers are going to learn both.