A helicopter can't make people go boom if you drop it on them.
Well, yes, it can, but thats beside the point.
Anyway, just to continue the game, I destroy the destruction of the destroyed helicopter (since the nuke is already destroyed...).
I rewind space-time, with my super-special-awesome time machine, before the helicopter ever took off, and convince the pilot that dropping that nuke was a bad idea. Then we went off to get some drinks.
The object is me, I guess, since I was the one that "destroyed" the destruction.