Fish Out of Water

 I was prepping food one day at my old kitchen job, the cook and dishwasher were starting to get into it and ended up on both sides of me. They were yelling at each other and the waitress walked in trying to calm them down. I on the other hand was just trying to keep myself going and calm cause I was literally in the middle of all of this. I soon had enough though as the waitress told them to calm down for the third time, I put the knife I was using down and yelled. "SHUT THE FUCK UP!" Now I was one to cuss, but to yell? That shut both of them up I pointed to the dishwasher. "You go home its almost the end of your shift." I turned to the cook and spoke. "And you go take a break downstairs." Once the cook left kitchen to take a break, I followed the dishwasher outside so I could take a break, out in the fresh air. He said something about the cook, but I just nodded and agreed as I sat down waiting for him to leave. Once he was far enough, I pulled out my phone and called my boss telling her what I did after taking charge, even though I wasn't the kitchen manager, but they weren't there either. She agreed it was the best course of action, after a while I went back inside to continue my prep for the closing shift cook and kept telling the cook to leave it alone as he was still wound up. 
The waitress when she had a moment did tell me I scared her a bit, because I wasn't one to get aggressive or angry. I apologized and soon after went home for the day and hoped the next day was better.