and was on the way to a new job in mongolia. he's an engineer. he actually gave his wedding ring and watch to his wife in case something happened. i'm going to talk to his brother and sister about that. i want to bring in evan perez breaking the navigation story for us tonight. some of this can get really technical, evan. just to start with explain exactly what a way-point is and what is significant about this information we're getting. >> think about your gps. you can enter longitude and latitude in your gps to try to direct you, navigate you to a particular place. now in the sky for pilots, they also have to include altitude. so essentially it's a place in the sky where a pilot can direct -- to direct an aircraft and the computer system on board the aircraft to take the aircraft. and so the navigational systems on the plane essentially uses these five digit codes to direct where to take the aircraft, anderson.