Teenagers, 150 years ago, knew cannonballs bounced of ironclad ships.  Zero pilots aimed for the battle ships wooden decks, unless they had a live torpedo.  Yet no one has provided a contradiction to the following observation. Aluminum in free space will not penetrate a larger piece of rigid structural grade building steel at subsonic speed (STP@SL). There are two ways to be fooled. One is to believe what isn't true. The other is to refuse to accept what is true.~ Soren Kierkegaard The highes