Monica Raymund is officially leaving Chicago Fire

TV Guide

"It has been an honor to play Dawson on Chicago Fire and one of the most meaningful experiences of my life," she wrote in a heartfelt note posted to Twitter. "I am so thankful for the journey and especially to all of you for watching, but I have made the decision that it's time for me to move on to the next chapter in my life. I'll always be proud to have played a fierce paramedic with such an incredible cast and crew. On to the next!"