right now on news4 midday, the d.c. council takes issue on same-sex marriage in the district. and a swiss court decides weather to release the award-winning director. and the swine flu fight begins. vaccines expected to arrive today. news4 midday begins right now. good morning, everybody. welcome to news4 midday. i am barbara harrison? good morning to you. i am joe krebs. this tuesday is the sixth day of october, 2009. there was an explosion followed by smoke and fire and now metro is trying to figure out exactly what happened. this is where kimberly suitors joins us live. good morning. reporter: good morning, joe and barbara. metro is describing this as an equipment failure preliminary. there is a collection shoe, it carries power, and it powers the train forward and it fell off. passengers on the train say they heard an explosion and saw smoke and fire. all of a sudden, there was aloud thump underneath my train car. at first people were annoyed and it was an