What I find the most disturbing aspect of this is that the metro service disruption report says, "Disruption at Fort Totten. Trains are turning back at Rhode Island Ave & Silver Spring due to a train experiencing mechanical difficulties outside of Ft. Totten. Shuttle service has been established."
One train rear ending another, causing significant casualties, should not be described with the same term that they use for things like door malfunctions.
I am also irritated that the news report I saw, which mentioned that one of the people killed was the driver of the rear train, felt the need to report that the driver was female.