Some dude got on the train up around Rockville, Maryland way....probably around 9AM....and died. No one noticed.
His body rode through the entire line....to DC, and then northward to the vast end of the line at the opposite end, and then retreated all the way back through DC again, to return to Rockville....where it was placed in the sitting yard for an afternoon run. Only then around 3PM, did the maintenance guys walking through the train before the afternoon run....did they discover his body.
Yep, just another day in DC. Dying and riding Metro....over and over.