grounded right now. i want to take you to the scene, this is in las vegas. keep in mind, okay, this is a system that pilots use for any kind of notification. not clear how many flights are affected or which locations. we want to get straight to pete muntean but we re told new information pete as we get to you perhaps you have information on this. united has delayed all flights temporarily as well. what is going on? reporter: so far we ve heard from american and united airlines. united said it s holding all flights on the ground right now because of the major system outage, the notice to air missions system. that means pilots cannot receive critical information they need to take off. these have to do with whether or not runways are open, navigational aids are available to pilots. this is critical stuff making sure the pilots know things are not available or may not be working. we are hearing the cancellations and delays are going up. so far the delays have doubled in the las
grounded right now. i want to take you to the scene, this is in las vegas. keep in mind, okay, this is a system that pilots use for any kind of notification. not clear how many flights are affected or which locations. we want to get straight to pete muntean but we re told new information pete as we get to you perhaps you have information on this. united has delayed all flights temporarily as well. what is going on? reporter: so far we ve heard from american and united airlines. united said it s holding all flights on the ground right now because of the major system outage, the notice to air missions system. that means pilots cannot receive critical information they need to take off. these have to do with whether or not runways are open, navigational aids are available to pilots. this is critical stuff making sure the pilots know things are not available or may not be working. we are hearing the cancellations
but this incident, according to pete, started with or at the white house. a breach or an attempted breach at the white house. luke, are you still there? yes. okay. so that is the information pete is reporting right now on the nbc special report. this, at least from the information we ve received at this point, started with an incident at the white house. yes, that s what he s reporting. it fits into this narrative of a car chase that several witnesses have said happened here around capitol hill. it fits into what i saw, which was police cars scrambling and chasing a vehicle moving towards constitution avenue. the prerimeter is secure. we were just told if we wanted to leave the capitol, we were permitted to, which means the situation, for all intensive purposes, is most likely over, in terms of danger to the
crime. they are focused on the victim, all 176 of them, just identifying the second of the three people who have died. i m a few blocks from where the finish line was and we can see the s.w.a.t. vehicles. most has been cordoned off. this would normally be a bustling area, especially on a beautiful spring day like today. and many of the thousands of people who came here from nearly 100 different countries to run this marathon stay for another day. they become tourists and of course, it would normally be a day of business, not today. so many places are closed. they are painstakingly going over each and every inch that is cordoned off in this 12-block area. with 15 blocks, looking for all the kinds of information pete was talking about. even going to the hospitals and retrieving some of the shrapnel that was embedded in the bodies of some of the victims. police have been guarding the perimeter, making sure that