"You have Stealth technology. That's going to last for a long time, but there will be some breakthroughs on that on the other side from a defense standpoint. What they are, I don't know, but now we're talking about defense against ballistic missiles. We thought at one time that here was a weapon that could never be destroyed by the enemy, but I don't have that same feeling now. I think it can be. But I think you can take actions to counter the defenses that might be set up, too. So it's a game of offense, defense, defense, offense, and so forth, so therefore technology continues as long as we have the world that we're living in."