federal otyfeictyia, lsthey , are investigating the cause of this crash. >>> we have breaking news at this hour. a metro worker is instruct by a vehicle used to perform maintenance. it happened just over an hour ago on the orange line between the west fall search and the metro station. the spokesperson tells nine news now tonight that the worker, they were air lifted to the hospital. the service between i have yen that and the church -- vienna and the church have been spotted. they are arranging that for passengers at those stations. >>> meanwhile, metro told the national transportation safety board just last week about a march of two metro trains due to a failure of the automatic train control system. and the story in the washington post today, they paint a picture of the close call saved by the quick thinking of the train operator. but they are telling us that tonight, metro believes that the incident has no connection to june's crash on the redline. >>> in a story the washington post said that the day was saved by a train operator who hit the emergency stop session when they overra