Deja Vu?

Quick quiz: It's the 11th of the month. On a warm autumn day, people panic as a plane crashes into a tall building in New York City. What day is it? 9/11/2001? That would work, but so would TODAY! Yes, today NY Yankees pitcher Cory Lidle gave the whole city a big scare when he flew his small plane into a luxury apartment building, killing himself and another passenger. Fortunately, no one else died.

The scary thing is it was so "easy" for him to jump in an airplane in New Jersey and fly over Manhattan. What would prevent terrorists from doing the same thing? In a response, figher aircraft were put into the air above several major US cities. The quick response is good, but what are we doing to stop the first plane from hitting?