I owned and ran my own security business for 18 years. You learn to assess the situation very quickly and react as trained. I, myself, have been in situations where you had no time to think but react. I have come out with black eyes and bruised ribs etc because I have the philosophy of not hitting back unless absolutely necessary. I (being only 5 foot 3 inches) had to hold a Huge bloke who was well over 6 foot 5 inches from entering a night club. He threw many punches at me, until I pushed him and held him against a steel staircase. It took 6 police officers to subdue him and get him into the back of the Police Vehicle.
Needless to say, I did not have to appear in court as he pleaded guilty.
I always see myself as jumping in to help ANYONE who needs help at ANYTIME. I don't even think twice about it. I do it before I even know what is happening.
Thank goodness I know how to handle myself.
I would never ever hesitate to help someone in need, no matter what the situation may be. We may be out numbered, but bring it on. You MUST have an air of authority about you to do this however, because if you feel or show fear at anytime you are done for. Sorry to be so harsh.