[coffeeblack]

For the presentation, they should open the gates of an empty hangar.

[mister_goo]

Their landing page contains literally a picture of an empty room.

https://www.northropgrumman.com/what-we-do/air/b-21-raider/

[MichaelCollins]

But that would spoil the dad joke where everybody pretends they can't see it.