For years, experts have warned that the Bay Area was due for a major earthquake, but no one knew exactly when or where it would strike. On October 17, 1989, the answer came with a fury. Measuring a massive 7.1 on the Richter Scale, the quake left large parts of San Francisco in ruins and hundreds of residents trapped under collapsed structures and burning homes. Witness the heart-pounding and heartbreaking rescue efforts made as we focus on five people fighting to survive the deadliest U.S. earthquake in over 80 years.