The first public passenger locomotive, Locomotion No. 1, began service in September 1825. The first mass-casualty railway disaster happened seventeen years later, in May 1842. A train to Paris derailed, killing at least fifty passengers in the ensuing fire. The first passenger flight happened in May 1908. Eleven years later, the first mass-casualty airline disaster happened, when a flight to Milan disintegrated mid-air, killing all twelve passengers. The first publicly-available AI language mode...