Abby, Carter, Chen, Pratt and homeless Stan will be confined to the ER for two weeks, while all of the other patients are evacuated and sent to different hospitals. While on the roof arguing with Luka about the use of a helicopter, Romano backs up into the tail rotor, and has his arm severed above the elbow. Anspaugh arrives to perform surgery, and reattaches the arm. Susan is stuck on the roof with a dying patient. After 2 weeks, the ER reopens. While all of this has been going on, Elizabeth has been in London, working at her father's hospital, where her supervisor doesn't like the American mannerisms and vocabulary she's picked up. She ultimately decides to return to Chicago.
Allen Bloomfield, B.J. Ward, Christopher Grove, Crispin Bonh, David Allen Brooks, David Hayward, Dee Freeman, Diane Delano, Harrison Page, Heidi Swedberg, James Weber Brown, Jillie Mack, Jim Piddock, Kaline Carr, Michael Muhney, Paul Freeman, Paul Hipp, Philippe Bergeron