Here, let me bring some light into your understanding of the matter.

Imagine, and I want you to really visualize this, a large man has a visible gun on his belt. He demands that you strip nude and give him everything you have. There is no path you can run towards, he’s blocking the only exit and, again, has a gun. It just so happens that you also have a gun, and unlike his, yours is already drawn. What do you do?