After Shepard's dramatic voyage to space, he feels underwhelmed and restless. Heeding Glenn's advice, Shepard attempts to quell his ambition with gratitude for his wife a ...

Weather endangers Shepard's flight, as tensions between he and Glenn hit a breaking point. ...

With JFK now in office, NASA finds itself under scrutiny, and Shepard's flight is delayed. ...

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Chris Kraft's and his team were assigned to select the first seven astronauts for the United States Mercury program out of over 100 highly capable applicants. ...

Kidd is surprised to discover she is being transferred out of the firehouse; Severide and Casey are suspicious and investigate; Otis and Herrmann discuss taking over a ru ...

Casey and Severide find themselves at odds after Casey argues with him over the best way to save a teenager entangled in barbed wire. When Casey looks to Boden for help s ...

While running a secret errand, Dawson finds herself trapped in a collapsed parking structure; pressure mounts on Casey as he begins taking on additional duties; Kidd grow ...

Lt. Casey gets off on the wrong foot with Sam Mullins, a temporary Chief who is filling in for Boden at House 51 for the morning. When Casey later makes a risky move in a ...

After learning the school fire wasn't an accident, Chief Boden turns up the pressure on Severide and Casey to investigate the cause of the fire that trapped his wife. Fue ...

With most of the squad still trapped inside the burning warehouse fire, Chief Boden makes a risky last-minute decision in an effort to save his men. Dawson continues to d ...