Chicago Fire

CHICAGO FIRE -- "The Unrivaled Standard" Episode 621 -- Pictured: (l-r) Miranda Rae Mayo as Stella Kidd, Monica Raymund as Gabriela Dawson -- (Photo by: Elizabeth Morris/NBC)

Chicago Fire season 6, episode 21 takeaways: The Unrivaled Standard

Chicago Fire season 6, episode 21 recap: The Unrivaled Standard

Chicago Fire season 6, episode 21 preview: The Unrivaled Standard

Chicago Fire season 6, episode 21 photos: The Unrivaled Standard

CHICAGO FIRE -- "The Unrivaled Standard" Episode 621 -- Pictured: Jesse Spencer as Matthew Casey -- (Photo by: Elizabeth Morris/NBC)

When is the Chicago Fire season 6 finale?

CHICAGO FIRE -- "The Unrivaled Standard" Episode 621 -- Pictured: Taylor Kinney as Kelly Severide -- (Photo by: Elizabeth Morris/NBC)

Chicago Fire season 6, episode 21 synopsis and promo: The Unrivaled Standard

CHICAGO MED -- "Devil in Disguise" Episode 315 -- Pictured: Rachel DiPillo as Sarah Reese -- (Photo by: Elizabeth Sisson/NBC)

One Chicago’s 5 worst parents

CHICAGO FIRE -- "The Strongest Among Us" Episode 620 -- Pictured: (l-r) Miranda Rae Mayo as Stella Kidd, Yuri Sardarov as Otis -- (Photo by: Elizabeth Morris/NBC)

One Chicago ratings report: Week of April 24

CHICAGO FIRE -- "The Strongest Among Us" Episode 620 -- Pictured: Monica Raymund as Gabriela Dawson -- (Photo by: Elizabeth Morris/NBC)

Chicago Fire season 6, episode 20 takeaways: The Strongest Among Us

CHICAGO FIRE -- "The Strongest Among Us" Episode 620 -- Pictured: (l-r) Jesse Spencer as Matthew Casey, Yuri Sardarov as Otis -- (Photo by: Elizabeth Morris/NBC)

Chicago Fire season 6, episode 20 recap: The Strongest Among Us

CHICAGO FIRE -- "The Strongest Among Us" Episode 620 -- Pictured: Yuri Sardarov as Otis -- (Photo by: Elizabeth Morris/NBC)

Chicago Fire season 6, episode 20 preview: The Strongest Among Us

CHICAGO FIRE -- "The Strongest Among Us" Episode 620 -- Pictured: Eamonn Walker as Wallace Boden -- (Photo by: Elizabeth Morris/NBC)

Chicago Fire season 6, episode 20 photos: The Strongest Among Us

CHICAGO FIRE -- "The Strongest Among Us" Episode 620 -- Pictured: Miranda Rae Mayo as Stella Kidd -- (Photo by: Elizabeth Morris/NBC)

Chicago Fire season 6, episode 20 synopsis and promo: The Strongest Among Us

CHICAGO MED -- "The Parent Trap" Episode 317 -- Pictured: Roland Buck III as Noah Sexton -- (Photo by: Elizabeth Sisson/NBC)

One Chicago crossovers: Guest stars for the week of April 24

CHICAGO FIRE -- "Where I Want To Be" Episode 619 -- Pictured: Miranda Rae Mayo as Stella Kidd -- (Photo by: Elizabeth Morris/NBC)

One Chicago ratings report: Week of April 17

CHICAGO FIRE -- "Where I Want To Be" Episode 619 -- Pictured: Monica Raymund as Gabriela Dawson -- (Photo by: Elizabeth Morris/NBC)

Chicago Fire season 6, episode 19 takeaways: Where I Want To Be

CHICAGO FIRE -- "Where I Want To Be" Episode 619 -- Pictured: Jesse Spencer as Matthew Casey -- (Photo by: Elizabeth Morris/NBC)

Chicago Fire season 6, episode 19 recap: Where I Want To Be

CHICAGO FIRE -- "Where I Want To Be" Episode 619 -- Pictured: (l-r) David Eigenberg as Christopher Herrmann, Christian Stolte as Mouch -- (Photo by: Elizabeth Morris/NBC)

Chicago Fire season 6, episode 19 preview: Where I Want To Be

CHICAGO FIRE -- "Where I Want To Be" Episode 619 -- Pictured: Miranda Rae Mayo as Stella Kidd -- (Photo by: Elizabeth Morris/NBC)

Chicago Fire season 6, episode 19 photos: Where I Want To Be

CHICAGO MED -- "Shaky Ground" Episode 309 -- Pictured: (l-r) Nick Gehlfuss as Will Halstead, Torrey DeVitto as Natalie Manning -- (Photo by: Elizabeth Sisson/NBC)

One Chicago’s 5 most WTF relationship moments

CHICAGO FIRE -- "Where I Want To Be" Episode 619 -- Pictured: Christian Stolte as Mouch -- (Photo by: Elizabeth Morris/NBC)

Chicago Fire season 6, episode 19 synopsis and promo: Where I Want To Be

CHICAGO MED -- "Born This Way" Episode 312 -- Pictured: Rachel DiPillo as Sarah Reese -- (Photo by: Elizabeth Sisson/NBC)

One Chicago’s 5 most stressed characters

Photo Credit: Chicago Fire/NBC

One Chicago questions of the week: Week of April 9

CHICAGO P.D. -- "Payback" Episode 519 -- Pictured: LaRoyce Hawkins as Kevin Atwater -- (Photo by: Matt Dinerstein/NBC)

One Chicago ratings report: Week of April 10

CHICAGO FIRE -- "When They See Us Coming" Episode 618 -- Pictured: Taylor Kinney as Kelly Severide -- (Photo by: Elizabeth Morris/NBC)

Chicago Fire season 6, episode 18 preview: When They See Us Coming

CHICAGO FIRE -- "When They See Us Coming" Episode 618 -- Pictured: David Eigenberg as Christopher Herrmann -- (Photo by: Elizabeth Morris/NBC)

Chicago Fire season 6, episode 18 photos: When They See Us Coming

CHICAGO FIRE -- "When They See Us Coming" Episode 618 -- Pictured: Monica Raymund as Gabriela Dawson -- (Photo by: Elizabeth Morris/NBC)

Chicago Fire season 6, episode 18 synopsis and promo: When They See Us Coming

CHICAGO FIRE -- "Put White On Me" Episode 617 -- Pictured: (l-r) Jesse Spencer as Matthew Casey, Miranda Rae Mayo as Stella Kidd, David Eigenberg as Christopher Herrmann -- (Photo by: Elizabeth Morris/NBC)

One Chicago ratings report: Week of April 3