This is a good time to give an example. Be sure to talk about the outcome as well.
"I recently had a student lose complete control of his emotions during class. I was able to calm him down by talking very gently and creating strong eye contact. This particular student will have outbursts from time to time so I am well versed on how to manage that type of situation. After class, I was sure to document the incident in his file and report it to my supervisor."
"I had one student get very angry when we were going to the cafeteria to see a presentation. He refused to enter the cafeteria. So I had to figure out why he was so angry. I found out that he thought that we would be going to the auditorium, and that he was expecting to be in a dim room. So I got him a pair of little sunglasses. He watched the presentation and got along with everyone else happily."