This is a terrible tragedy. Nine people are now dead, and who knows how many with serious injuries. We won't know the full extent of this until everyone is discharged from the hospitals and the investigation is complete.

This is tragic.

The trains move very fast but I was never worried about an accident when I rode the Metro--I didn't think this was possible.

Deepest sympathies to the victims who were riding this train.

And I wonder, might the rear train operator have been texting messages? A bus driver rear ended another bus a few weeks ago while he was texting. Young drivers don't appreciate the dangers in being distracted while they are in charge of other people's lives on public vehicles.