Today in history: Pan Am Flight 103 was a transatlantic flight from London to New York that exploded over Lockerbie, Scotland, on December 21, 1988. A bomb hidden in a suitcase detonated while the Boeing 747 was cruising at 31,000 feet, causing the aircraft to break apart midair. All 259 people on board were killed, along with 11 people on the ground, making it one of the deadliest terrorist attacks in aviation history. Investigators eventually determined the attack was an act of terrorism linke