I think yelling is a signal to attract attention in a fear inducing/adrenaline charged situation. I was a little fearful for my own safety and I figured that if

I think yelling is a signal to attract attention in a fear inducing/adrenaline charged situation. I was a little fearful for my own safety and I figured that if I was loud enough, someone would hear me if things got out of control. To clarify: this wasn’t an office environment. This person was a tradesman and we were working alone with a lot of heavy tools around.