Ver en Cuevana. On June 12, 2016, Pulse Nightclub in Orlando, Florida was the site of one of the deadliest mass shootings in the history of the USA. Lifeline will take you behind-the-scenes to see how the blood center and hospital raced against the clock to save the victims' lives. Hear the emotional stories from both the survivors and the blood donors themselves who unknowingly saved their lives. Hear the emotional stories from both the survivors and the blood donors themselves who unknowingly saved their lives.