The word is one much used in particular areas of the aviation world.
I got a down (I got a failing grade on a flight)
My aircraft's down (it's U/S)
We've got an aircraft down (an aircraft has force landed/crashed)
We're down X aircraft (we're X aircraft short of being able to meet a commitment - maybe U/S or assigned other missions)
Then there is "I'm going down".
The Brits came up with the book title "Tornado Down" and the Cousins followed suit with "Blackhawk Down".
Things must be OK in your part of the world if a man in your position and responsibilities has time to worry about this 212man.