With reporting by Josh Horowitz

If you've seen "Mission: Impossible - Rogue Nation" by now -- and if not, come on, you really should -- then you probably can't get that jaw-dropping Vienna opera sequence out of your brain. We at MTV News feel exactly the same way, which is why we made sure to ask onscreen sniper Rebecca Ferguson and director Christopher McQuarrie how the whole thing went down behind the scenes:

... So now you know. Just don't try it at home, kids.

"Mission: Impossible - Rogue Nation" is in theaters now.