The memory of a Metro train filling with smoke in a tunnel in downtown Washington, killing a woman and injuring more than 80 passengers, lingers in the air of Tuesday morning’s commute for many riders.

Fiddling with a phone is a commuter’s safety blanket. And the day after Monday’s accident, many turned to Twitter to express their fears, hopes, jokes and anger as they ride the rails.

L’Enfant Plaza reopened Tuesday.