News from my Office Window

Today at approximately 10:12 am, a large shadow began ominously descending over the sky.

At approximately 10:15 am, after hearing a series of bumps, this vessel appeared outside my window. [Note my view. Not bad for an intern, eh?]

What Could this Mysterious Capsule be?
A magical flying pirate ship (from either Peter Pan or Pirates of the Caribbean, with preference on the latter)
A sort of time machine
George Jetson
UFO
A very primitive form of espionage (possibly Bulgarian?)

At approximately 10:16 am, everything made much more sense.

Two guys were washing the windows. They just smiled and waved. A few hours later, I received a security notification regarding possible 'gondola' traffic on the 37th floor.