How would you handle an angry parent of one of your patients?

"I had an experience during my emergency department clinicals where a father became angry with me because he thought we were harming his two-year-old son, who had been involved in a bad car accident. I needed to place an IO in the child's leg, and the father was in the room when I started the procedure. He started yelling at me, and I calmly explained the procedure and how it would help his son. I told him we needed a route to give his son fluids and medications and that this was the best way to do it. I also told him that he would have to leave the room if he would not calm down and let us treat his son. One of the other nurses pulled the father to a corner of the room, and he calmed down. I believe that any angry parent or caregiver they are scared and take out their frustration on those trying to help. I never take angry outbursts personally and always explain what I am doing so they can see I am transparent and am not trying to harm their child."