Can You Really Knock Someone Out Harmlessly Like in the Movies?

It is a classic action-movie scenario. At the climax of the story, our hero must infiltrate the villain’s lair, which is guarded by a small army of gun-wielding henchmen. But despite being gifted with the obligatory perfect aim and bottomless magazines, for one reason or another our hero can’t simply charge in guns blazing. Perhaps this is a stealth mission, [...]