Zach Britch News Today

its the top of the hour on "cnn newsroom." im alisyn camerota. >> im victor blackwell. good to be with you. more than 8,000 flights have been delayed just today after the faa made a rare move in the ground of safety. they grounded flights to work out major flights in a messaging system. pilots use this system to learn about safety hazards in realtime. >> somewhere overnight, there was an issue with irregularities in the messages that were going out that reflected a bigger systems issue...

You look at the chinese. numerous attempts to get into u.s. transportation systems. theyve tried to hack into the metropolitan transportation authority right here in new york. so this is a matter of due diligence which is, a, they have to figure out what went wrong in the system, and then they have to figure out, was it from the inside or was it from the outside? >> john, thank you very much for explaining all of that. lets discuss further. we have peter goles, and zach britch. thank you so mu...

Flights, you know, rarrive and depart from large airports. if the system starts to crash, its going to cascade throughout the country, and a pilot is -- will not take off unless he has a read on his depar sture and arrival airport. it simply shut the system down. >> zach, im thinking about the people who have flights later today or tomorrow. the number of delays crept from 2,000 to 3,000 to 6,000 to 7,000, and now theyre above 8,000. does the last domino likely of these delays fall today or do y...