Chicago Fire 2x22 "Real Never Waits" (Season Finale) - A fire at a boarding school leaves Lt. Severide (Taylor Kinney) shaken and wondering if he could have done more. Meanwhile, with the firehouse in full support of Dawson (Monica Raymund) as she retakes the fireman's exam, Lt. Casey (Jesse Spencer) attempts some political maneuverings on her behalf. Elsewhere, Mills (Charlie Barnett) looks for answers about his father's mysterious past and Chief Boden's (Eamonn Walker) grand plans take a detour. Lauren German, David Eigenberg, Yuri Sardarov, Joe Minoso and Christian Stolte also star. Sophia Bush, Amy Morton, Randy Flagler, Melissa Ponzio, Vedette Lim, Edwin Hodge and Kenny Johnson guest star.