You Military guys have probably heard of this but I found this interesting and thought I would tell you all about it. I went to a Tactical Competition with my SWAT team a few weeks back, and one of the many events was the Terrorist Threat. We got there and we were loaded up with MILES gear (I believe that's the same way you spell it) But it was a Vietnam M16 that fired blanks that activated a laser. You wore a ballistic helmet and an LBV wired with sensor that would go off if hit by the laser. It worked really good only disadvantage was it jammed a lot it think I was unjamming it more than anything. It was really cool we did the scenario and I got two of em by a head shot.