The round was selected because the USSS chose it. Over time the "word" was that this round did not overpenetrate. Penetrating the aircraft skin isnt a problem, its the cartridge splitting up and sending several smaller projectiles out of the skin and into the mass's behind. When I was on the streets, that wasnt a problem (as in the Miami incident) but if it had stayed on the plane? Imigian where those three projo's whould have ended up? Somewhere 50 to 80 feel back? That worries me. Like I said earlier, I dont know the answer but it just is something to discuss.