news 4 jackie benson is live at the scene, good evening, jackie. >> reporter: megan, we're told that this began as some type of fight or dispute on the sidewalk just up the street. now, the man who was killed is said to be in his late 40s. it is not clear at this time if he is related to the less seriouslilily -- victim in his late 20s, people heard sounds of a fight out on the streets. it is not clear how many people were involved but it resulted in the stabbing. police shut down several blocks of the road which remain closed down at this time. as well as part of third street. >> there was some information that an assailant may have gone into one of these houses. we have pretty much discounted that. we think that it miscommunication. indeed it was a victim going in there trying to help. however, to ensure our absolute safety of everybody we're going to clear the house. but that is where you're seeing that activity. >> reporter: now, as you mentioned this is arlington county's first homicide of the year. police have not released the victim's name. they're still in the process of noti

live in woodbridge, jackie benson, news 4.e >>> here at the live desk we just got our hands on a letter that was sent to metro's gm that may worry anyone riding the rails. empty fire extinguishers have been discover and lights all over the tunnels that don't work. the shutoff switches are supposed to cut power to the third rail in an emergency, and some of them are broken. the administration just wrapped up a so-called safety blitz in which they investigated safety concerns across the entire system. they also found filthy emergency signs and piles of debris blocking emergency exits. the letter says in combination with one another, these defects create a systemic safety condition that significantly limits metro's ability to manage a fire or a smoke emergency in the tunnel. now our transportation reporter has been tweeting a lot of this. he just alerted this to metro's response. officials are saying they're conducting employee safety briefings this week and all the critical items are receiving priority attention. jim? >> thank y

kennedy it is the brilliant guy benson and the lovely caw mill foster and the brilliant joanne noy -- joanne nosuchunsky. >>> live from america's news headquarters, i'm jackienez. president obama addressing the threat against isis following the meeting his national advisors. the president continues to lose ground and isis leaders wake up thinking it could be their last. >> we continue to take out their leaderses and their uhing tays. for isis leadership it has been a bad few months on the grou syria and in iraq. isil is on the defense -- defensive. the president add -- admits the only way it comes is a bit more to dwoing to saudi uh raib -- going to saudi arabia where he is pursuing the on going threat from isis. they are flying simulated attack is pas near a u.s. destroyer in one of most aggressive acts in recent memories. that's according to the u.s. officials who said one warplane got within 30 feet of the ship. it happened off the coast of poland. millions of americans could be driving around with potentially deadly air bags. the safety watchdog says there is an 85 million that haven't been recalled yet. but the company can't prove they are safe. takata