The post-9/11 "security" restrictions in airspace around Washington have always been pointless. Now they may actually have killed people -- or helped to, and the ones who perished were not terrorists.
A year ago in the Washington Post, I discussed an aspect of the current security mania that would be the subject of widespread ridicule if it affected more than a handful of people, but that continues because it is still largely unknown. These are the nutty and abusive "ADIZ" rules that apply to air traffic for thousands of square miles surrounding Washington DC. Here is one map, showing the "Flight Restricted Zone" that covers much more territory than the Beltway does and that no one except airliners (or police or the military) can ever enter; plus the much larger Air Defense Identification Zone, which requires cumbersome procedures before aircraft can enter. (Prettier map, but slower to load, here.)
Essentially these rules create a vast burden of nuisance-regulation for everyone involved in aviation. Air traffic controllers hate the system, because they have to monitor and give clearances to hundreds of pilots per day they could otherwise leave on their own. The Federal Aviation Administration truly hates the system, because regulators are forced to track down and prosecute every accidental or foolish violator. And all violators have fallen into that category so far: in the three and a half years in which these rules have been in place, the many thousands of enforcement actions have not yet produced any malicious-minded or quasi terrorist activities. It's as if the police, DAs, and judges were tied up arresting and prosecuting everyone who didn't have a "Support the Troops!" decal on their car.
(So why are the rules there? Because the security officials, apparently most of all the Secret Service, tell the FAA that they have to be.)
When the FAA proposed making the rules permanent, it got more than 20,000 written comments on its web site -- virtually every one of them hostile. You can read the entirety of them here. A particularly vivid and bitter description of the system from an insider is quoted at the end of this previous post.
The rules may have gone from pointless to actively dangerous. In the last five years, the fear of breaking airspace regulations has increased for pilots. The Cory Lidle case may prove to be an illustration (stipulating: not all the facts are known). Why did the flight instructor riding along with Lidle try to make the difficult and dangerous "box canyon turn" that apparently led to his smashing into a building? The alternative would have been plowing into LaGuardia's airspace -- which, for a pilot in his 20s looking forward to a long career, would have been a serious black mark. Yes, yes, yes, a black mark would be infinitely preferable to a fatal crash, but this could have been a factor in the pilot's decision. And at least the LaGuardia airspace is there for a good and necessary reason.