Pilots after the German Wings incident.

The man who crashed the plane was the co-pilot.. The Pilot left the cabin to use the loo and when he came back the co-pilot locked the cabin door and crashed the plane..

So a terrorist would only do that?
Literally? The one thing he would crash into is a building, or landmark? Never mind the hundreds of deaths he would cause, it only matters what he would crash into?

well the targets of 9/11 were the financial head (wall street), government head (white house, though this was the Pennsylvania crash) and the military head (the Pentagon), all were symbolic targets, not just to cause deaths