After bombs go off in the airport and metro station at rush hour. Panic. We have to run. What we are learning about several raids. How an arrest last week could be connect to todays attacks. Authorities stepped up security. News4 at 11 00 starts right now. First tonight, a new warning about travel to europe. The state Department Says americans should be wary about visiting the entire continent. Terrorists continue to plan, nearterm attacks throughout europe. There is a call from police for cell phone video as investigation continues. Trains, trams and buses will be running and schools will be open as the country Team Coverage at our area airports. But we begin with a possible connection to last weeks terror arrests. Tonight, police are hunting this man as yet unnamed, seen in the airport with two others, those men officials believe blew themselves up moments later. Many injured, bleeding and many dead, killed by bombs packed with nails. Isis claiming responsibility for the horror. Hund