General Bacca. You must be sick of my voice by now! I dig this. It suggest not just a blocking obstacle... but a system of steering invading forces into "Kill Boxes" no matter where they land. Force them into range, and engage them with fire (literally in this case... fire!) and destroy them in small bite size units. Would you like an apple pie with that? I dig it. Now re-tool your forces and punish the wicked!