When it comes to professional military and police negotiators, they go through trainings and schooling to learn how to effectively calm down a situation.
There are ways that can diffuse a situation before it becomes deadly.
If some ill prepared soul takes hostages and demands food from you or he will kill your family, then this might be a good time to use those negotiation techniques.
Knowing the right thing to say or what not to say could help save lives.
Being able to talk someone down or work out a deal through negotiation is something that will also benefit your professional career in many ways.
At least before the world as we know it ends.