You are a blackbelt in Ninjitsu. The driver of the black car also is a Blackbelt in Ninjitsu but you didn't know this at the time. An unarmed "fight" starts. What would indicate to you that the driver of the black car holds a high rank in Ninjitsu versus some other system of martial arts? As an intro, let us say that you are inside an automobile sitting at an intersection awaiting the light to change (you're in the front passenger seat). There is a Black car setting next to you (your right) with the windows down. Driver just listening to his radio when, for some strange reason, just before the light turns green for you, another car (blue) rear-ends the black car next to you. The driver of the blue car gets out at the same time as the driver of the black car. The blue car driver walks hastely up to the black car driver (car is black), screamming that the black car driver has to fix his blankittyblank blue car. Then, for some strange reason, the blue (car is blue)car driver takes a swing at the black car driver. What is unique about the unarmed combat methods of a Shinobi? On what basis in Ninjitsu would you testify to your observation of the event in a court of law?