As we have been watching all morning, the families joining us down at the memorial reading the names, every single name of a life lost on 9 11 will be read at that service. Also six moments of silence observed, another one coming up here in just a few minutes. The stories vary depending on who you talked to. For some it is cathartic. Sarah fisher was 4 years old when her father was killed on 9 11. Shes 17 now. This helps her feel closer to her dad. For others like the aldermans who lost their son peter at 38, they dont want to be down here, its too hard. They listen every year for his name to be read. Its unimaginable its been 13 years in time since this happened. Also, if we can pan up and show the shot of the incredible resolve that is in focus when you look at 1 World Trade Center that was rebuilt. It will reopen later this year. That shows what this country, this city, these people stand for, that we cannot be defeated. Also some nice things to note. Today at 6 00 p. M. Eastern for the first time on a 9 11 anniversary, the memorial will be open for the public to go, to mourn, to remember. Earlier this morning, the 9 11 Museum Opened extra early for the family members to be there, if that is something they want to do, carol. As we think about the horrific attack and how this city remains on alert for any potential terror attacks, today is about all of those people youre looking at, those first responders, those family members, the lives lost on that horrific day, and the evidence that we are stronger than the terrorists. No question about that. No question about that. I would imagine that authorities in new york are on high alert just in case anything might happen, correct . They are. No direct threats at this point in time to new york city according to the police commissioner. Theyre on high alert. Thousands of officers out. Focusing on those potential targets like the bridges and tunnels, but theyre on alert. All right. Lets head out to shanksville, pennsylvania. Momentarily at 10 03 eastern, united flight 93 crashed in a field outside of pittsburgh saving many lives in the city of washington. Lets listen. [ bell tolls ] Donald Arthur peterson. Gene peterson. [ bell tolls ] mark david rothenberg. Christine ann schneider. Honoring those who died on that flight that crashed into that field in shanksville, pennsylvania. We know now that that plane was on its way to washington, d. C. So the passengers aboard that plane, brave souls, poppy harlow. They saved a lot of lives that day. They gave their own. Poppy, can you hear me . Reporter i can hear you now, carol. I lost you for a moment. Its really hard to watch this. You think about someone not someone personally affected. I didnt lose anyone i knew that day. Its very, very hard. It just shows you how difficult it is for all those families. You cannot imagine what they are going through. They go through it in their own way. A year later, 13 years later, it doesnt make a difference. But what is so nice is that all these people gather, whether its in pennsylvania, in washington, d. C. , here in new york city, to honor those lives and to refocus on what this country stands for and that we cannot be defeated, even with the threats that face this country at this point in time. Its about the strength of our country and the strength of these families and we think about all of them today and all of those first responders. Absolutely. Another reminder, United Airlines flight 93 crashed into that field in pennsylvania. 40 passengers and crew members died aboard that plane. They died saving other americans from certain death. It is hard to believe its been 13 years since the United States was attacked on 9 11. 13 years later the United States is still fighting terrorism. That was the min message last night as president obama revealed his strategy to defeat and ultimately destroy isis. Lets bring in cnn senior White House Correspondent outside the white house this morning. Good morning, jim. Reporter good morning, carol. It is worth pointing out on this anniversary of 9 11, the president said there is no threat against the u. S. Homeland posed by that tear roar group. He also came out talking tough in that speech, announcing his decision to order air strikes on isis in syria. Still the questions have begun on how hell get the job done. It was a cautious commander in chief no more, rolling the dice with an ambitious plan to wipe out isis. Our objective is clear. We will degrade and ultimately destroy isil through a comprehensive and sustained counterterrorism strategy. Reporter the president s biggest leap, ramping up u. S. Air strirks on isis targets in both iraq and syria. Ive made it clear we will hunt down terrorists who threaten our country wherever they are. This is a core principle of my presidency. If you threaten america, you will find no safe haven. Reporter to help expand those air strikes, the president is sending 475 more u. S. Service members to iraq, raising the total there to 1,600. Add to that a new mission to equip and train moderate Syrian Rebels. To make that happen the president has been working the phones to build a Global Coalition that Officials Say include saudi arabia which will host a Training Program for antiisis fighters. The president also insisted that war on isis will be different. I want the American People to understand how this effort will be different from the wars in iraq and afghanistan. It will not involve american combat troops fighting on foreign soil. Reporter but mr. Obamas decision reopened old wounds as republican senator john mccain and the president s former press secretary and now cnn contributor jay carney clashed over whether the president is to blame. The fact they didnt leave a residual force in iraq, overruling all the military advisers is the reason were facing isis today. I think on the question of the residual force, there was another player in that, which was the iraq gi government, a. B, it was the fulfillment of the previous administrations withdraw plan. Youre again saying facts that are patently false. Senator, i can pause it with Great Respect form you that we disagree. No, you cant because you dont have the facts. You dont have the facts, mr. Carney. Thats the problem. Senator, i understand that you present the facts that you believe are true based on the argument youve made not that i believe are true, they are true. For a long time you believe we should leave troops in iraq in perpetuity. Thats not what this president believes. Obviously he was elected president to fulfill what he believed was right for our country and right for our National Security. Reporter looking forward, expect more debate over the Syrian Rebels that will take the fight to isis on behalf of the u. S. Senior administration Officials Say theyre being vetted, but republicans were skeptical before the speech. As for a timeline for those air strikes in syria, senior Administration Officials would not offer one saying the white house is not going to telegraph those punches, but at the same time, carol, there are other questions emerging such as which countries will be participating in those air strikes in iraq and in syria along with the u. S. Those questions will be asked up on capitol hill later today as Administration Officials are briefing lawmakers on the road ahead. Carol . Im sure youll keep us posted. Jim acosta live from the white house today. Lets talk more about the president s strategy with cnns International Correspondent christiane amanpour. Good morning, christiane. Good morning, carol. Im curious, do you think isis was watching the president s speech . You know, they are incredibly sophisticated on social media. Probably. Unfortunately, you know, im giggling. Really its not funny at all because they have used elements of the president s speeches in the past to make these ghoulish, gruesome, horrible videos directly challenging president obama before they have attacked and brutally murdered american citizens, jim foley and steven sotloff. Yes, indeed, im sure theyre watching. Some people are obviously going to be quite afraid of what might happen to those who are still captive. Do you think that isis is adjusting somehow . Its difficult to determine just how strong isis is as far as military might, per se. Let me put it this way. I was told by an iraqi official and International Officials that, imagine this, that when they took mosul in june or july, 2,000 or so isis fighters and Something Like 60,000 assembled forces of the iraqi army simply fled, melted away, just decided they wouldnt fight. So this has been the problem. Its a political problem that the iraqis feel they have nothing to fight for. Thats a big challenge now for president obama and secretary of state john kerry to make sure that this government actually can gather all the iraqis together, to feel theyre all enjoined in this fight and all belong in iraq. Obviously the other thing about isis is that it has this sort of meg phonic fear it telegraphs ahead of itself. President obama listed the catalog of atrocities that isis has committed. That scaring the defensiving daylights out of people, many of whom would rather run away than stay and fight. Maybe the greatest strength is the war theyre waging psychologically. I dont know. I also wanted to talk to you about this international coalition. Do you really think that any middle eastern country will help the United States with air strikes, for example . Well, hard to tell exactly what theyre willing asked to do. By the way, i do think that the air strikes, according to all sorts of officials i speak to inside iraq and actually in syria feel they have had a major impact already these air strikes. But Going Forward again, the other major challenge is getting some of these countries, some of these sunni countries, the uae, qatar, saudi arabia, where secretary of state kerry is today, to cut off the funding for isis and for these extremist groups. In this mess that has been syria, the big vacuum that was left because the United States and west didnt engage with the moderate syrian opposition, it allowed sympathetic extremists in the arab world, in the muslim world to send a lot of weapons and money to the extremists in syria. So thats going to be a huge challenge, also, to get these arab countries, allies, after all, of the United States, to stop that and to cut that off. Christiane amanpour, thank you for your insight, as always. I appreciate it. Thanks, carol. Still to coming, the judge in the Oscar Pistorius case say it is blade runner is not guilty of murder, but he may still be in trouble. Robyn curnow live in south africa with more. Good morning. Reporter what a day in court, that moment that not only Oscar Pistorius has been waiting for, but also reeva steenkamps family. It was very tense, a very claustrophobic day in court, all squashed together. Literally hanging only to every word that the judge spoke through. It was a very, very powerful moment as she explained, he was not guilty of murder. Im randy and i quit smoking with chantix. For 33 years i chose to keep smoking. Because it was easier to smoke than it was to quit. Along with support, Chantix Varenicline is proven to help people quit smoking. Its a nonnicotine pill. Chantix reduced the urge for me to smoke. It actually caught me by surprise. Some people had changes in behavior, thinking or mood, hostility, agitation, depressed mood and suicidal thoughts or actions while taking or after stopping chantix. If you notice any of these, stop chantix and call your doctor right away. Tell your doctor about any history of Mental Health problems, which could get worse while taking chantix. Dont take chantix if youve had a serious allergic or skin reaction to it. If you develop these, stop chantix and see your doctor right away as some could be life threatening. Tell your doctor if you have a history of heart or blood vessel problems, or if you develop new or worse symptoms. Get medical help right away if you have symptoms of a heart attack or stroke. Use caution when driving or operating machinery. Common side effects include nausea, trouble sleeping and unusual dreams. I did not know what it was like to be a nonsmoker. But i do now. Ask your doctor if chantix is right for you. A blockbuster day in south africa. Court has adjourned for the day in the Oscar Pistorius trial. The judge ruled the olympian cannot be found guilty of murder in the death of his girlfriend reeva steenkamp. The accused, therefore, cannot be found guilty of mur r murder. That, however, is not the end of the matter as culpable homicide is a competent verdict. That means there are still a number of other charges for the court to consider including whats called culpable homicide which means you kill someone unintentionally and there are severe penalties for that. Robyn curnow live outside the courthouse in south africa to tell us more. Hi, robin. Reporter essentially culpable homicide is manslaughter. Its about negligence. Hes been found not guilty on murder which means thats about intention. He didnt intend to kill reeva steenkamp. He didnt foresee she was in that bathroom. Thats what the judge has said. However, its certainly not like Oscar Pistorius is off scotfree. The culpable homicide conviction which is likely to come out on friday morning, the judge essentially spelled it out saying in no Uncertain Terms that he was negligent, that he failed the tests of how a reasonable man would act under that circumstance. Essentially our legal analysts saying she just has to cross the ts and dot the is in terms of convicting him on culpable homicide. That does carry jail terms. It also can have Community Service in terms of sentencing, thats still unclear. Its at the judges discretion. Thats not going to take place in the next few weeks. Thats still going to be another whole mini trial. Wow. I was just thinking this is a long, drawnout process. Youve been following it for an awfully li long time. Robyn curnow live from south africa. Ill be right back. I long time. Robyn curnow live from south africa. Ill be right back. Long time. Robyn curnow live from south africa. Ill be right back. Long time. Robyn curnow live from south africa. Ill be right back. 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Call tollfree now, or visit us online and download your guide free at answerstomedicare. Com tv. Its full of useful information to help you understand your medicare choices. And its only from Unitedhealthcare Medicare solutions. Call right now or visit us online. Its been 13 years since the twin towers fell in manhattan. Weve seen ominous signs of Health Issues who responded to the september 11 attacks. Cnns medical correspondent dr. Sanjay gupta here now with a preview of tonights documentary terror in the dust. Workers are inspecting tons of debris from the World Trade Center tower. Trying to locate anyone who might still be alive. Continuing with some hope that perhaps survivors might be found. Reporter in the days and weeks after the towers fell, ernie valibona, a vice cop and first responding to ground zero worked punishing hours sifting through mounds of rubble. He was on the overnight shift. Most of the time he was coated in dust. I was like raccoon, smoke and dust caked into your ice. Where your eyes would tear, there was trickles of clean skin where your tears went down your face. Reporter his only protection from breathing in the toxic air, a bandan