The Russian special forces are legendary for their training and prowess in the face of danger.
A video from Larry Vickers, a former Delta Force operative from the Untied States, goes to Russia and films some of the drills that FSB operatives go through. These training exercises are based on testing the individuals confidence, to see how they will react under pressure. The must be able to fire accurately close to other operatives, and even do mathematics while having a gun fired next to your ear.
Check out more of his videos on his YouTube channel.