hello, everyone. it s high noon here in the east. 9:00 a.m. in the west. first breaking news out of syria. u.s. special forces carried out an overnight raid killing a top isaiah commander named abu sayyaf. it was conducted by helicopter. officials say as many as a dozen other isis members all of whom served as local security personnel were also killed. richard engel joining us from istanbul. what more can you tell us about the raid? reporter: this was a very bold raid. it was intended to be a snatch and grab operation with american delta force commandos going in on black hawk helicopters,s on brings. it was launched out of the kurdistan region of northern iraq.it was launched out of the kurdistan region of northern iraq. the attention was to capture sayyaf and his wife alive and to see what kind of intelligence they might be able to provide to u.s. intelligence agencies and to the u.s. military. once the commandos were on the ground, however, they were engaged in an intense
they are, you know, rigorous in terms of their attention to detail and stuff like their timing. so it was a little bit weird when the time for that briefing came and went today and there was no sign of them. they ended up delaying the ntsb briefing by more than an hour, which is a very unusual thing for that agency. and they later explained that the reason for the delay is because of what they called breaking news in their investigation into the derailment today. the ntsb put forward a new prospect of what might have happened to the train that derailed. a new line of inquiry that they are actively investigating. including with the fbi. it s a line of inquiry that we have not heard anything about in the last few days since the derailment, but they raised the prospect of this tonight. that was a very dramatic turn in that story today. we ll have more on that turn and the respect they are raising in just a moment, including with an effort who can talk to us about how feasible th
timing. so it was a little bit weird when the time for that briefing came and went today and there was no sign of them. they ended up delaying the ntsb briefing by more than an hour, which is a very unusual thing for that agency. and they later explained that the reason for the delay is because of what they called breaking news in their investigation into the derailment today. the ntsb put forward a new prospect of what might have happened to the train that derailed. a new line of inquiry that they are actively investigating. it s a line of inquiry that we have not heard anything about in the last few days since the derailment, but they raised the prospect of this tonight. that was a very dramatic turn in that story today. we ll have more on that turn and the respect they are raising in just a moment, including with an effort who can talk to us about how feasible this potential explanation is. so that was one thing that happened late today. also this afternoon there was the h