A family video taken by a passenger on Como-Harriet Streetcar Line captures audio leading up to an incident that left a volunteer trolley conductor seriously injured Friday evening.

Emily Swanson was on the train with her 2-year-old son and other family members when a second streetcar in front of them stalled on the tracks during their ride. In the video acquired by the Star Tribune, one conductor can be heard saying that this kind of thing has never happened in his 35 years of driving trolleys.

Swanson and her family were kept on the train as workers attempted to couple the cars, when their trolley suddenly lurched forward, pinning a man between the vehicles.

In the video, you can hear the man scream while the driver yells “Oh my God! 911, 911, anybody.” Swanson immediately called for help and authorities arrived within minutes.

The adult male victim, who is in his 70s and has not been identified, was eventually unpinned and taken to Hennepin County Medical Center. As of late Friday night, he remained in critical but stable condition, said Dawn Sommers, spokeswoman for the Minneapolis Park and Recreation Board.

Family members at the scene declined to comment, calling the incident an accident.

Aaron Isaacs, chairman of the Minnesota Streetcar Museum, said the Como-Harriet Line, which operates between Lake Harriet and Lake Calhoun, was closed after the incident Friday evening but was set to reopen Saturday on its regular schedule. Isaacs declined to elaborate on the circumstances that led to the incident.

The museum is a nonprofit, all-volunteer organization that provides train rides for $2 per person that last about 15 minutes.

The streetcar station in Minneapolis is owned by the Hennepin County Historical Society.

Swanson said Saturday the conductors did a good job trying to keep her family calm but wondered whether they had routine emergency training for unforeseen circumstances like these.

“We pray for a good outcome” for the victim, she said. “My family sees this streetcar as a treasured part of our city’s rich heritage and hope it can continue on for many decades to come as an attraction and teaching tool.”