A trainspotter fractured his spine after falling from Union Pacific's Big Boy No. 4014, the world's largest steam locomotive, as it travelled through Nebraska in the United States. The incident, caught on camera, highlights the risks enthusiasts take to get close to the famous engine as it tours the country, drawing large crowds of railway fans at each stop.

The exact circumstances of the fall have not been fully detailed, but the man is reported to have suffered a fractured spine in the accident. Big Boy 4014 is a historic articulated steam locomotive built in the 1940s and restored by Union Pacific, renowned for being the largest and most powerful steam engine ever built, and its public excursions regularly attract enthusiastic onlookers eager to photograph and film it up close.