This video is a force on force exercise where two armed opponents at contact distance, engage in hand, fighting, each looking for an opportunity to deploy a tool.

In this case, I am able to use my hand fighting skills too make the space and time required to draw a pistol, while my opponent (a Brazilian Jiu Jitsu Black Belt) chose to go to a knife.

A knife is an excellent choice while still in contact, but a poor choice when distance is involved