Special Guest Stars Eamonn Walker as Battalion Chief Wallace Boden David Eigenberg as Lieutenant Christopher Herrmann Taylor Kinney as Lieutenant Kelly Severide Kara Killmer as Paramedic Sylvie Brett Christian Stolte as Firefighter Randy "Mouch" McHolland Monica Raymund as Gabriela Dawson Jesse Spencer as Matthew Casey Joe Miñoso as Firefighter Joe Cruz Guest Stars Ariana Cordero as Eva Dawson James Colby as Bomb Unit Sergeant Ray Dwyer Danny McCarthy as Mark Tremon Co Starring Sean Michael Sullivan as Bomb Squad Tech Charles Lang Jason Bradley as Larry Shepard Michael Carollo as Officer Antoine Pierre as Tommy Brianna Borger as Shelby Sophie Kaegi as 12 Year Old Girl Brian Huther as Patrol Officer Joey Mendez Bri Sudia as Amy Michael Sherwin as Allen Tullis Rebecca Hurd as Sheri Todd A. Horman as George Lehr (Civilian) Rudy Galvan as Malcolm Keith Kupferer as Joe