Brief panic at Washington rail hub as stabbing suspect shot

Panicked passengers fled Washington's main train station after a security officer fatally shot a man who had stabbed a woman, in what police said appeared to be a domestic incident. Rail service at the station -- a main Amtrak hub on the US East Coast rail line linking Boston, New York and Washington -- resumed shortly after the incident. Police commander Jeff Brown told reporters that the suspect apparently stabbed the woman at the entrance to an adjacent building, and was then chased into the