Meredith has a feeling and George and Izzie have to call in Cristina to get her out of bed. A paramedic brings in a man with live ammunition in his chest; her hand is the only thing preventing an explosion. Bailey goes into labor and Derek and Cristina perform surgery on Bailey's husband who crashed the car on his way in. Izzie initiates things with Alex. When the anesthesiologist leaves the paramedic alone in the O.R., she panics and pulls her hand out of the patient - but Meredith takes her place.