i want to bring in david soucie and richard quest. richard, let me start with you. explain to us what this safety system, the notam is. >> it stands for notice to airman. it's a system whereby all the air traffic control information, the airport information is put together by the faa and then distributed in a variety of bulletins. so, if you are flying to los angeles from newark, you may be told that runway x is having repairs between 2:00 and 4:00 in the morning. you'll be told this air traffic control system is not working. the ils at this airport isn't working. it's the raw information that is given to pilots who will check the notams before every fight. it is not as crucial in a sense as the on route stuff, permission to take off, permission to land. it's not at that level. but the notams are the basics of what tells pilots what airports and what conditions there are in avi aviation. >> pilots aren't flying blindly. >> no. you can fly without notams but you might get a nasty surprise at the other end. it talks about the aviation system specific to your route. th

david soucie, good to have you on. >> that's because jim those how much my mom loves jim sciutto.ut in all seriousness that is important. jim, your points about cybersecurity questions and safety with the software are key as well. >> so it doesn't happen again. we will keep on top of this story as we get updates on additional delays as airlines try to catch up from this outage. if you are watching and you are out there traveling, we will bring you all the information as we know it. >>> also ahead, president biden says he was surprised to learn that classified documents were found by his attorneys in one of his offices here in d.c. >> people know i take classified documents and classified information seriously. >>> how he says it happened and what we know about the kinds of u.s. intelligence contained in those documents. >>> we are also following another disturbing turn in the case of the missing mom of three in massachusetts. sources telling cnn police have found a hacksaw and blood-stained cloth at a trash facility they were searching. th. i loveve my rings but i'll cherish that