On this day in 1929, the Ambassador Bridge opened as the longest suspension bridge in the world at 7,490 feet, built with 21,000 tons of steel. On November 15, 1985, a bomb from the Unabomber injured a research assistant at the University of Michigan. Theodor Kaczynski, known for his bombing campaign against modern technology, killed three people and was captured after his manifesto led to his identification by his brother.