 Bridge open! I'm First Lieutenant Andrew Palmano. Today I'm going to teach you to conduct urban breaching with the United States Marines. Marines find out that there's a building or other area that needs to be entered and so we have a couple of methods of doing that. In certain environments, we'll be required to do so using explosives. What we do is we have a breacher. He's the marine that actually is priming the charge and detonating the charge. You have an assistant breacher who helps place the charge and spool out the wire to do that. Our blanket man holds the ballistic breaching blanket which protects the Marines who stack behind him. Once the Marines come out of the stack, they will aggressively breach that target and fight their way inside. The breacher is just completed giving his hasty breacher's brief to the team in which he describes the targets they're attacking, the charges they'll be using, appropriate standoffs as well as the casualty collection plan in the event that there should be casualties within the team. Right now you see that they're moving up to their target and getting ready to stack. So the blanket man has been told in that breacher's brief how far they need to be. He estimates the distance. The breacher then goes up and sets the charge with his assistant breacher. So the breacher is placing the charge on the target. The charge is in place. Now they're priming in. So they have a debt cord loop. The prime of MDI is a modern demolition initiator also known as shock tube. It provides an instantaneous shot from when the Marine presses on the detonator to when the charge should explode. Breacher, you have control. Roger, I have control. Stand by. Five, four, three, two. Marines have been able to successfully breach some doors, some walls, and some windows. Overall you have a breacher, you have your charges, you have a breach team and that's how you breach like a Marine.