[mommadooo3]

So they grounded cropdusters for 30 major cities. Is that a guarantee that the terrorists wouldn't go to smaller towns and cities?

[MizSterious]

Is that even a guarantee they won't fly to the 30 major cities? From what I know of crop dusting, they can fly very low--I watch them around here when they work. They're just about at weed-level! What radar would pick that up, if someone bought a plane and took off from an obscure field somewhere? This crop duster angle is definitely not good news for anyone.