Hit today. Plus, goodbye to a latenight icon. No. No. No. No. No. Youre not going anywhere david letterman. What are you gonna do . Newsroom starts now. Hello again, thanks for joining me im fredricka whitfield. This is cnn breaking news. This breaking news out of iraq. A Major Development in the war against isis. Another iraqi city has fallen now to isis. The city of ramadi. The mayer and a highranking security official the last Iraqi Security forces have pulled out from a key military base on the west side of that city. When asked about isis being in control of the city, a spokesperson for the governor of anbar says basically yes, but its a big city. There are still pockets of resistance. Ramadi ramadis mayor says isis militants had arrived by the hundreds. This morning they began debt top nating a series of car bombs, forcing the iraqi fighters to retreat. The Iraqi Federal police and iraqs Prime Minister both vowed to send in reenforcements now. Joining me now is the former navy s. E. A. L. Jonathan gilliam back with us also a former fbi special agent, former air marshal and former Police Officer and joining us from new york. And joining him via skype from orlando, florida, is cnn military analyst, Lieutenant General mark hertling. Hertling is also a retired army, former commanding general for europe and the seventh army. Good to see both of you. General, in your view how serious is this . I will give a different narrative, frederica. I know how the reportings come in from some of the provincial officials and city mayors, especially in anbar province. There is going to be a continued fight for ramadi. It is going to happen this week and it is going to be tough conditions but what we have seen in the past we have heard several times already, ramadi has fallen ram mad day has fallen and suddenly it is not news anymore. What you are seeing is isis attempting to control the city. They have done some things with suicide bombs and my sources tell me that there have been over 15 in the last two days car bombs, driven into the city to blast through walls and to take control of the city. They have gone in en masse. I dont know if 100 is the right number. But they have taken over buildings, raised the flag gotten the photo op and dispersed to the other area of the town where it is hard to be hit by Coalition Air force. You are going to see, i think, this week a continued fight for ramadi there is a lot of flailing around by the government Officials Saying it is fallen. I think you have got the prime mine officer of iraq sending reinforcements to the city that may contribute to this very difficult fight, but its not fallen yet. It is just in the middle of a fight, just like cobanny was a few months ago. So jonathan help us picture what is happening here. The general mentioned the black flag goes up as we have seen in other instances, where isis reportedly takes control. Does it mean that they commandeer the stores shall the banks . What does it mean for the People Living there, some 8,000 people in ramadi have already been displaced over a period of time. But what is their life like when isis claims to take control of a city . What do you envision . I fell you, as the general was saying i think there was an incredible analysis of their tactics of Going Forward and then coming back. Every time they move forward and they do this type of a mission, they really do demoralize the total mindset of the community in which they are going to. And i think if they are doing anything right, they are Going Forward, they are causing that disruption they go backwards into safe hiding and then they come back and eventually they are going to wear down unless we have reinforcements for those locals they are going to just demoralize them eventually. They dont have an a massive fighting force, at least isis doesnt. So i think that may actually be a tactic plus you know when they go and they show that they have moved forward, its a mind game going back and forth and using the forces that they can. I agree with the jeep you will probably see them go towards and backwards and this thing will eventually play out eventually. The Prime Minister says he is deploying shia militia to the city and the same time ramadi is in a location that is strategic, particularly for isis. There are roads that link it you know to jordan and syria what does this mean in terms of why isis would want to target ramadi . Yeah thats the very interesting point frederica and i will elaborate on that by saying thats deploying. The Prime Minister has said on our statewide tv thats going to start moving forward some of the militia fighters and that translates into some of the shia fighters. That is incredibly important in a sunnidominated area but they have asked for them. He has pushed forward three bat tall yin, additional battalions of Iraqi Security forces to reinforce the joint Operations Center in anbar province. Thats important, thats repositioning forces from baiji, other fights into ramadi to save this city. But i will go one bet we are what Jonathan Jonathan said a minute ago. One of the things tough watch out for when isis goes into the city they not only take over get the photo op, do the propaganda so all the media throughout the world is proclaiming another victory, what they do before they pull out and go into the suburbs, they plant ieds in some of these places so it makes much more difficult for the Iraqi Security forces to go in and clear. So you might go into the government building and find three or four ieds in the building to bobby trap and drop the ceilings of it. Thats what nation fight so incredibly difficult. It is not just its oneonone fighting with machine guns and rocketpropelled grenades it is also the bombs left behind in buildings there. Wither going to leave it right there thank you so much Lieutenant Colonel mark heart ling and jonathan gilliam. Appreciate it you got it fred. Yall track now scrambling to reopen its busy northeast corridor in time for the beginning of this busy workweek. The railroad was ordered to make some safety changes before it can put trains back on track following last weeks deadly crash in philadelphia. The focus on the investigation now also includes whether the train was hit by a projectile before it derailed. Erin mclaughlin joins us from philadelphia. The fbi is now involved in this investigation. To what degree are they making any discoveries . Reporter hi frederica. Well tomorrow we expect fbi forensic vote take a look at the trains windshield to assess whether or not it was, in fact hit by some sort of projectile. Meanwhile, we have spoken it a philadelphia native who showed us just how easy it was for someone to access the tracks. The mystery of amtrak 188 continues. At the center of the investigation, a fistsized marking on the windshield and the possible that shortly before it derailed the train was hit by an unknown object. Last week the assistant conductor of the doomed amtrak train told investigators that she heard engineer Brandon Bostian say into a radio transmission that the train had been struck by something. At this point, we really want to chase this lead down. Reporter transportation officials are also investigating reports that minutes before the crash, other trains in the area were also hit by projectiles. The windshield of a septa commuter train was shattered, as was the passenger window of an am track ce almost e train. I think we were definitely alarmed, never heard that loud of a sound on the train, we take the train pretty often between d. C. And new york it was definitely frightening. Reporter philadelphia native howard brown says these reports do not surprise him. He says the police rarely patrol this area and kids get into trouble on the tracks all the time. The junkies will go up here hoping they find like debris or refuse that they can sell in the scrap yard. The kids they go up here because they think this is fun. So the kids out on the track that night, throwing things at trains not unusual at all . No. No. No. Not unheard of. Not unusual. Not that its accepted but its actually believable that something of that nature could have happened. Reporter steps away from the crash site, brown shows us how easy it is to access the tracks. This is just how easy this is. Reporter a police car stops him but my point being my point being they are not here if that accident didnt happen. Reporter we have reached out to authorities for comment on police on the track and we have already seen new fencing go up in this area. Meanwhile, the ntsb says it has listened to all radio transmissions from trains in the area that night. So far, they say they have heard nothing from bostian to suggest that a projectile hit amtrak 188. Frederica . Thanks so much erin mclaughlin, appreciate that from philadelphia ya. Take a closer look now at the investigation and whats next. Joining me is mary schiavo, cnn transportation analyst and former director of the u. S. Department of transportation. Richard beale has more than 30 years of Railroad Operating experience and also a former train accident investigator in the insurance industry. Good to see both of you. All right. So amtrak has been told to beef up some of its safety requirements including speed limits on northbound trains through that area. So mary, to you first, explain what is being required and how would that happen now . Well in many ways whats being required is what has been required by legislation all along, and amtrak has been working on getting in place this system called positive train control. And they have committed to have it in place by the end of the year and they have it on many places on this corridor on this train corridor. They just didnt have it in place here not excusing it but amtrak of course says the deadline isnt upon us yet to put that in. They have committed to put that in as soon as possible. And that would have automatically slowed the train, i think would have prevented that accident. What it does is uses gps and other Computer Technology to sense what traffics on the track, what the trains speed is visavis the other traffic on the track, and give the train instructions to slow down basically. And so richard, seems to be a lot going on here they are to improve safety now, put some of the things in play, the investigation still continues. Theres a lot of forensic material that still has to be pored over in addition, a lot of pressure to get the train back on the tracks partially, we will see that tomorrow and supposedly amtrak will be full bore on the northeast corridor maybe as soon as tuesday. So can you have all of this simultaneously and still have a solid investigation and outcome . Yes, because they have already retrieved the Important Information and they are going over it in washington and probably as we speak. They probably have a pretty good idea what took place, except for the incidentals. Okay. And if we know that the engineer still cannot remember certain events that took place right prior to this crash, do you see, mary that theres going to be a reenactment a almost like a rebuilding of even the train and perhaps even the track similar to like you see in plane investigations where they piece together the plane in order to get more answers . Would that happen here . I think what they will probably use is computer modeling both in aircraft investigations trains bridge you know failure, multiple fatality traffic accidents, they use computer modelling to reconstruct and i think probably do that here. The up fortunate thing is the only the persons in the cab of that train will know what hit it not exactly what but when something hit that train, if they knew that something hit it and what happened because clearly, someone someone or some thing, rather distracted the engineer and the only person right now that can tell that because the ntsb has already told us its not on the black box case. They dont have that information from the black boxes. But you know i have worked many many accidents where over time sometimes, the memory, particularly these traumatic events the memory does come back or they will start to remember certain things. And hopefully, the engineer will recover some of that memory because he has the most crucial part at this point. Richard, you think of the locomotive and the space where the engineer was, do you see as a real possibility that perhaps if this projectile hit that windshield it may have knocked the engineer off his feet he may have hit something, perhaps even the throttle that would make this train go at an excessive speed and if that were the case what do they look for to find out who was at the control at the home of the train increasing its speed or what was in control . I think its a very real i think its a very real possibility, but dont forget i believe the throttle was absolutely you know, wide open probably even in run eight, trying to climb to track speed, trying to get up to 80 miles an hour and it may be a perfect storm here where he was just about to throttle back and get that speed up where it belonged when the incident took place. Now, if something was thrown and hit his windshield he doesnt know what it is. He doesnt know if he is being shot out. Its quite loud when it happens. I have had it happen numerous times and what your instinct is to flail or flinch or sometimes dive out of the watch with all the controls wrapped around you very close, its very plausible he could have hit his head you know sustained some sort of a just a lowscale injury kind of knocking senseless for a minute or two. And thats just enough where the alerters and all on the engine wouldnt pick up in time and he has to get himself back up and would explain why he finally put it into emergency, trying to reorient himself in the chaos. All right. Richard about eall mary schiavo, thanks to both of you. Thank you. We will be right back. Welcome. Mike fincham was diagnosed with Colorectal Cancer 2 years ago. It was a priority for mike that he continue to be there for his family throughout his treatment continuing to live the life he loves. Thats why he chose Cancer Treatment centers of america. 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We now know the names of the six marines killed when their helicopter went down in the mountains of nepal that crashed during an earthquake Relief Mission tuesday. Their bodies recovered this morning near the crash site. The captain, a pilot, based at camp pendleton, california and native of member member. Another another captain grew up in kansas. Sergeant ward johnson a helicopter crew chief out of camp pendleton, from florida and Sergeant Eric seaman, a crew chief from camp pendleton, a native of california. Corporal sara medina a combat photographer with marine installations from okinawa, japan from illinois and Lance Corporal jacob hug, a combat videographer based out of okinawa, a native of arizona. As the families prepare to receive their loved ones remains, our nick valencia has spoken with the family of one of the pilots captain Chris Nordegren in his hometown of wichita, kansas. When he stayed here and lived here, this was his room. Reporter in a small bedroom in wichita, kansas, a big tribute. Up above youre going to see, thats all Bishop CarrollHigh School Football stuff. Avenues star athlete in school . Yeah an interesting thing, you will notice that theres a bottle of rum up there. Whats that about . Well he he was a good kid and everything but he also was a kid. He loved life. Loafed life. He loved life. Live it had to the fullest. Reporter ronald and terry are the parents of 31yearold captain chris nor again, one of the six marines killed when a helicopter they were in crashed during humanitarian mission in nepal. He was good whatever he decided to go do he was good at. Reporter he led a team of marine reservist into com