A woman - at work - is going downstairs, when suddenly there is a blackout. In that very moment she realizes that her husband is about to die.
The woman worked as an electrician at a hospital and she knew that the emergency generators were broken. He husband had had a car crash and he was at that hospital, connected to a machine that kept him alive. When the blackout happened she knew that her husband couldn't be breathing by himself and therefore that he was dying.