Did Mouch, Gallo, Ritter, and Mackey prove to be forces in Firehouse 51?
On Chicago Fire Season 9 Episode 9, things took a turn when it emerged that they had to return to training.
Meanwhile, a nasty blow to the head brought Casey unimaginable pain as he tried to seek help.
Did he get some much-needed leave from Firehouse 51?
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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.