"Liberate Your Friend" from an Attacker with a Knife

Tonight's work focused on releasing our friend from an attacker holding him up with a knife... by understanding the situation, the kind of angle with the knife, the way the attacker stands, spotting the tension points on the attacker, what is supporting him and what can break his structure. Then in one quick and precise movement we take action and allow our friend to 'escape' while controlling the attacker.

Please share your thoughts. What did you learn tonight? What was challenging? Etc...