Google: floating push up.
It's actually called a planche though.
Better yet here's a few youtube videos:
http://www.youtube.com/watch?v=TdE_AOJrk...
https://www.youtube.com/watch?v=PBI4fqU4...
Very possibly. Difficult, yes. But possible. It takes a lot of strength and endurance.
Anyone know if the push up stance that Rita does in the movie "Edge of Tomorrow" real? Looks impossible to do.