I had a bit of a scare today, myself. I heard a whole lot of fighter jet activity over the area where I live, which is not something that generally happens around here. And it lasted for quite a while. It seemed like they were circling around at a fairly low elevation. I got a bit nervous.
I found out later that Pres. Bush went to Camp David, so I'm assuming that the fighter jets were escorting him and checking things out. I'm pretty much right under the flight path between DC and Camp David. I felt a bit better after I figured that out.