Halifax Explosion 1917
Back in 1917, Halifax, Nova Scotia, became the stage for one of history's most jaw-dropping man-made blasts. A French munitions ship packed with explosives slammed into another vessel in the harbor, and the collision turned the city into ground zero for a 2,989-ton-of-TNT detonation. The explosion killed more than 1,500 people in an instant and leveled whole neighborhoods.
Amid the chaos, train dispatcher Patrick Vincent Coleman stayed at his post to warn incoming trains. His chilling final message read: "Hold up the train. Ammunition ship afire in harbour making for Pier 6 and will explode. Guess this will be my last message. Good-bye boys."
Boston's rapid response by sending doctors, supplies, and money by ship and train left such a mark on Halifax that Nova Scotia still ships a Christmas tree to Boston every year as a heartfelt thank-you.