Report of light smoke at that station. This is a live picture near the scene. You can see firefighters are there in posi. Theyay they believe this was an issue with the arcing insulator. The insulator keeping the power on the third rail from coming into contact with another substance when t is an issue with the insuteorinsulator, is not uncommon see cf smoke or spark. That appears b situation r t o track. Now single tracking between boston clarendon declays 20 to 30 minutes on both lines as firefighters lo at the situation. Maintenance crues looking to make sure its not a lingering proble with further effects. Initially we saw a lot more firefighters. Nowust one fire truck but we are in contact with the Fire Department and will keep you posted as we get more information touthe hour. Thanks, richard. Traffic is getting back to normal, but crews are still cleaning up afternp a water main break wraeked havoc during rush hour. Megan mcgrath joins us live from the scene to tell us how repai