One More Shot

With everyone's support, Dawson makes final preparations to retake the fireman's exam, but a call to the field may throw a major wrench into her plans. Elsewhere, Lt. Casey has an important matter to discuss with Antonio. Meanwhile, Lt. Severide and the firehouse welcome Rick Newhouse, the latest addition to the squad, Shay gets an uninvited surprise guest and Chief Boden makes a bold move.