The building where I work is directly under one of the landing approach paths for Dulles airport, and my cube is next to a window looking north such that planes on approach suddenly materialize over my head and gradually get smaller on their way to the runway. I see a pretty wide range of planes throughout the day, from tiny Learjets to fullsize 747s.
Yesterday one of these came banking into the approach from the east. My brother used to be in the Air Force and had told me about them, but I’d never seen one myself before. Man, those suckers are huge.