I've had a gun pointed at me before, which was pretty scary.

Sheer terror has to be 9/11 though. My mom, dad and aunt all worked within blocks of the twin towers, and my aunt was IN the North tower (she made it out OK). I was stuck in school until about 2pm with no way of contacting any of them until I got home. The thoughts racing through my mind, as well as the radio reports (the school wouldn't allow teachers to put the TVs on) made for an incredibly harrowing experience. Just imagine, thinking both parents could be dead.

****ing scary.