This is not a repeat.
Overnight, two Metro employees were struck and killed by a Prime Mover, a diesel-powered equipment mover, on the Red line between Shady Grove and Rockville. Metro has stopped all service between Shady Grove and Rockville at this time, stopping the Red Line at Twinbrook for the time being. There is shuttle service between Twinbrook and the affected stations, and it’s unlikely the affected stations will re-open much before noon. The NTSB is on-site between Shady Grove and Rockville, investigating the incident.
It’s not clear what the two train operators were doing on the tracks, or why the Prime Mover did not see them, or stop in time.
Metro has released some transit options if you’re transiting near those two stations today. Take MARC, the Bus, anything except rail, it seems.
UPDATE: WaPo reports that the workers were installing new train control equipment in the tracks.