narration by Shatner, interview clips with the people involved and, in many cases, the actual recorded 911 call. Most segments were about 9 to 13 minutes in running time, although some ran shorter, particularly on five-segment episodes, and a few were longer in duration. Usually, the first segment of an episode included a commercial break shortly after the incident itself unfolded, and after the break Shatner would usually pick up again from the station the segment was introduced. Unless otherwise specified, stories were presented in the form of re-enactments. Occasionally, recorded video footage of all or part of the event itself (usually amateur video or television news coverage) would be used. In these instances, Shatner would mention that a particular amount of footage was taped "as events unfolded" in the opening to a segment in which recorded footage was included. Many re-enactments required complex presentation, such as the recreation of house fires, automobile accidents, police chases, explosions, pregnant women in labor, and even natural disasters. Some stories took place in the form of a documentary. In these stories, the show's camera crews would ride along with paramedics or police, or wait in hospitals and film whatever happened to unfold. These stories usually involved more than one event in a single segment at the same medical facility. One such story was the Charles Stuart murder case, which happened during a ride-along with Boston EMS. In the show's early seasons, Shatner would close episodes with a statement advising viewers to learn the emergency numbers in their area and to post them by each phone, as not all areas had the 911 system back then. Later in its run, however, the closing statements focused on other lifesaving tips such as learning various first aid techniques, among other things. Each episode would end with Shatner making some variation of the following statement: Situations Crimes, automobile accidents, medical emergencies, fires, choking/asphyxiation, and miscellaneous injuries were the most common situations presented on the show. Other situations commonly presented on it included technical rescues, near-drownings, childbirth, animal rescues, search and rescue situations, and aircraft-related emergencies. Occasionally, stories involving gas leaks, electrocutions, suicide attempts, scuba diving accidents, drug overdoses, train-related accidents, allergic reactions, and natural disasters were also presented. Although the show mostly featured serious emergencies, it occasionally featured humorous stories of non life-threatening situations and false alarms. Examples included a burglar who got stuck upside-down when he