[FairOpinion]

They are not allowed. But how do you stop them, except escort them or shoot them down.

There are temporary no-fly restrictions, of which pilots are notified, someone posted that on another thread.

Some pilots choose to disregard them.

After a couple of them would get shot down, maybe they would pay more attention.


Crop Duster Buzzes Bush Appearance in Florida
http://www.freerepublic.com/focus/f-news/1254568/posts

Here is the post, which posted the official restriction:

http://www.freerepublic.com/focus/f-news/1254568/posts?page=51#51

[Prime Choice]

Some pilots choose to disregard them.

Then all of those some should lose their wings permanently. That'll serve as a wake-up call to stop screwing around.