Original sentence: A typical episode centered on the ER, with almost all scenes at the hospital or surrounding streets.Carter; and season twelve included two episodes set in the Darfur region of Sudan, featuring Dr.Luka Kovac through the tragic events of one Christmas Eve shift and the Christmas party that preceded it.Other episodes used more creative formats, such as the 1997  live episode, "Ambush" performed twice; once for the east coast broadcast and again three hours later for the west coast, and 2002's "Hindsight" which ran in reverse time as it followed one character, Dr
Edited sentence: Among the memorable episodes of ER is a live episode, "Ambush", in 1997, with the NBC camera crew disguised as a PBS crew making a documentary film in the hospital.Carter; and season twelve included a storyline set in the Darfur region of Sudan, featuring Dr.Most episodes center on the ER, with almost all scenes at the hospital.The actors performed the show again three hours later so that the West Coast airing would be live as well.This episode received Emmy Award nominations for Outstanding Directing and Outstanding Lighting Direction (Electronic), and won the Emmy for Outstanding Technical Direction/Camera/Video for a Series