We will get to todays remembrances in a moment. We begin with new Health Concerns for democratic president ial nominee, Hillary Clinton. This morning, secretary clinton was at a Memorial Service at new yorks ground zero. Republican president ial nominee donald trump was also there. About 90 minutes in, mrs. Clinton left saying she felt overheated. Before she was taken to her daughter a apartment. A camera captured mrs. Clinton appearing woozie and losing balance as she was escorted into her suv. A short time later she emerged from her daughters apartment. How are you feeling . I am feeling great. Feeling great. Dr. Jon lapook, chief medical correspondent. Would a diagnosis of pneumonia help explain why mrs. Clinton looked wobbly. First to point out i am not mrs. Clintons physician and trying to put things in perspective based on limited information. Pneumonia does help explain todays events. Pneumonia can make you weak, dehydrated. On a hot day with further dehydration, like he possibility for unsteadiness is relatively innocent, a vasovagal reflex. When a persons Blood Pressure and pulse drop, causing dizziness or fainting. Today, she was apparently standing for more than an hour in hot humid weather. It was 80 degrees with over 50 humidity, wearing pants and long sleeves. Total setup for a vasovagal. What is usual course of pneumonia . All depend on how severe. On Underlying Health of the patient. Mrs. Clintons physicians have placed her on antibiotics implying they think bacteria are involved. Still, we dont have much information including what tests have been done for example, what her chest xray shows. Her physician advised her to rest. A tough prescription in the heat of a president ial campaign. Dr. Jon lapook. Thank you. Clintons doctor released a statement saying mrs. Clinton previously had been diagnosed with pneumonia and advised to rest. As the we mentioned there were Memorial Services across the nation sunday. In remembrance of the september 11th attacks, 15 years ago. Here is jamie yuckas. At ground zero, 1,000 people, victims families, dignitaries and politicians marked 15 years since 9 11. This is a country, we were never more reunited. Readings and singers added for the milestone year. May you always do for others and let others do for you [ bell tolls ] the day started with the traditional moment of silence. A bagpipe procession played under overcast skies. Tolling bells filled the air. My dad vincent worked in the north tower. Relatives red the names of those killed in the terror attacks. And my sister, maria lavage, its been 15 years since i have seen that beautiful face and that funny smile. In washington, d. C. , the American Flag was unfurled over the side of the pentagon in the exact spot where the plane hit. Killing 125 people. President obama thanked the men and women who have served the country since the attacks. Thanks to their Extraordinary Service we have dealt devastating blows to al qaeda. We have delivered justice to osama bin laden. We have strengthened our holand security prevented attacks. In shanksville, the town held a lantern lighting saturday night. Today, hundreds gathered to remember the 40 People Killed on flight 93. Tell stories of september 11th that encourage a new generation to learn about that day. Be better. Be braver. There are now more visitors to the World Trade Center site than before 9 11 with a museum. Transportation hub, Shopping Center and 60,000 new residents surrounding it. Thank you, jamie. Our justice reporter paula reid sat down with Loretta Lynch. They talked about the september 11th attacks and the new terror threats facing the u. S. On 9 11 i was actually in my apartment preparing to go to the World Trade Center. I had lunch with two friend, federal Law Enforcement agents who worked there. 15 years later, attorney general Loretta Lynch is responsible for preventing the next 9 11. The mandate now is to prevent terror attacks. Obviously we still have significant issues, certainly globally. We have seen the rise of isil and affiliated groups. Today, lynch says the greater threat to the u. S. Is not wellorganized teams of foreigners, but young loners with u. S. Passports. The threat is primarily from those individuals who are already here. The home grown violent extremists. In the cases we have charged we have seen them younger and younger. Not only about half of our cases under 26, i think actually maybe a third of them are under 21. Skillful use of social media helped isis inspire the deadliest terror attacks on u. S. Soil since 9 11. First in san bernardino, and then orlando. This is a generation that is able to meet and develop relationships entirely online. Very virtually. Virtually. I think you have put your finger on one of the biggest changes we have the seen in the development of the threat. And we do see younger people, millenials as you indicated they live online anyway. And certainly, isil has taken advantage of that using the internet and the online Virtual World to not only recruit but pass instructions through. I think lynch says her successor must prioritize Law Enforcement cooperation at home and abroad. Thats something that i think lives on regardless of what administration is here or not. Thats in issue transcends politics or position. Really goes to the heart of protecting who and what we are as a country. Paula reid, cbs news, washington. Attorney general Loretta Lynch among our guests as cbs this morning becomes the First Program to broadcast live from the new Smithsonian National museum of africanamerican history and culture in washington, d. C. Thats first thing on cbs. The overnight news will be right back. ,,,,,,, cbs news poll out today find a tighter race in the key battleground state of florida. Hillary clinton is now up just two points in the sunshine state. In ohio, another crucial battleground, clinton maintains a lead of 7 points. For more on this here is Errol Barnett and cbs news election director, Anthony Salvanto in washington. On this 15th anniversary of 9 11. Your battle line tracker looks into how best to combat terrorism, big differences between donald trump and Hillary Clinton supporters in answering the question, right . Right. While most americans agree that the terrorist threat is still real and serious, the differences are that donald Trump Supporters are much more in favor of using military force to go against the terrorists, wherever possible. Hillary clinton supporters say thats part of it. But not as large a part of the solution. Lets just listen to how donald trump links terrorism to immigration. But we are allowing people to come here and we dont know do they turn on us . Are a small percentage of them bad . If a small percentage is bad, thats not acceptable. Donald trump is seen as being less prepare to be commanderinchief based on your numbers is that changing . It is changing. He has made progress on that measure over the last week or so. We asked people, what is it you want to see in a commanderinchief . And, even though folks often talk about how much a potential president knows, and how much information they have, not everyone is looking for a lot of details. What theyre looking for is a president who sets the big picture. Whose values take the country in the right direction. Especially, Donald Trumps voters. Hillary clinton voters by contrast are looking for a president that starts with details and specifics. Hillary clinton made waves this weekend with something she said at a fund raiser friday. To just be grossly generalistic, you can put half of trumps supporters into what i call the basket of deplorables. Right . The racists, sexists, homophobic, xenaphobic, islamaphobic, you name it. Clinton regrets saying half but stands bite sentiment. She has been trying to woo donald Trump Supporters as well. Any proof that that is working . Some of his supporters are what we call reluctant republicans who have not yet been sold on donald trump. He its not doing as well with republicans as she has been doing with democrats. But we do not see a wholesale movement of republicans over to clinton. Nor of democrats over to trump. Thank you for walking us through all the new information. Cbs news election director Anthony Salvanto. In syria, ceasefire expected to begin monday. Part of an agreement between the u. S. And rush y wsia fighting o opposite side of the long, brutal war. Reporter today, new round of air strikes pounded aleppo. Already ravaged by the fiveyear civil war. More than 100 people were killed across syria in a series of weekend attacks. Tomorrows ceasefire cant come soon enough. Under the agreement, the u. S. , russia, and the russiabacked assad regime will stop air strikes so humanitarian aid can be delivered to civilians. U. S. Backed rebel forces have also agreed to pull back from a key supply route to aleppo. And create a demilitaryized zone. If the partial ceasefire hold for one week, the u. S. And russia will then carry out joint air strikes against their common enemy. The islamic state, and other militant groups. Secretary of state john kerry forged the deal with his russian counterpart in geneva friday. And acknowledged success wont come easy. A similar deal was reached in february of this year. It fell apart when russia moved heavy artillery into aleppo to help assad forces. A lot of people watching this one, jonathan. Thank you. For nearly two weeks, dozens of cargo sheets belonging to a shipping company have been stuck at sea. After the south Korean Company filed for bankruptcy. A judge cleared the way for some of the ships to unload. Here is mireya villarreal. Reporter docking at port of long fuel bills were guaranteed to pay its employees. Patrick kelly represents impacted workers. Another ship that is out on the sea. We dont know what is happening with that. We dont know what the conditions are. Of those workers on those ships. Handles 8 of transatlantic shipping. The south korean based company had dozens of cargo ships floating at sea filled with 14 billion in product from companies, samsung, nike and forever 21. Friday, a u. S. Bankruptcy judge allowed four ships to dock. So far only one has. A director for Retail LeaderAssociation Says the delay could impact one of the biggest shopping days of the year. It is september. Can this really affect the Holiday Season . The long supply chains, this is, the beginning of peak season. This is when a lot of the shipping is happening. So, this does have the potential effect on the Holiday Shopping season. Certainly more items as well. Black friday. Hopefully wont get to a pin the where that becomes a concern. South korean officials are expecting a two to three month delay in some cases. Theyre enlisting the help of shipping companies and deploying up to 20 replacement vessels to minimize the delays. Mireya villarreal, thank you. Coming up next, september 11th, tributes across the nfl on the first football sunday of the new season. Redid you say 97 . 97 yes. You know, that reminds me of geicos 97 Customer Satisfaction rating. 97 . Helped by geicos fast and friendly claims service. Huh. Oh yeah, baby. Geicos as fast and friendly as it gets. Woo geico. Expect great savings and a whole lot more. Our bacteria familys been on this alright kiddos erations. Everybody off the backpack, we made it to the ottoman. I like to watch them clean, but theyll never get me on the mattress finally theres a disinfectant mist designed for sofas, mattresses and more. Introducing new lysol max cover. Its innovative cap has a 2x wider spray that kills 99. 9 of bacteria. Max cover is another great way to lysol that. You ready . First kid by their second kid, every mom is an expert, and more likely to choose luvs than first time moms. New luvs with nightlock plus absorbs wetness faster than huggies snug dry, to help stop leaks even overnight. And you can save up to 150 per year by choosing luvs over huggies. Live, learn, and get luvs. Music extraordinary starts here. New ky intense. A stimulating gel that takes her pleasure to new heights. Ky intense. In the early autumn of 2001, sports played a big role in the healing of america. Today on the first football sunday of the new season, the nfl paid tribute to the victims and heroes of 9 11. Reporter football used to be an escape from the real world. On the 15th anniversary of september 11th, its a part of it. It is sunday. Here in america, that means it is time for football. President obama kicked off the season. On this day, 15 years ago the world was shaken. Reporter in 13 stadiums, big hearted fans saluted the flag, players, coaches and politicians put on a display of red white and blue. Vice President Joe Biden helped unfurl a giant flag in philadelphia. Former new york city mayor, rudy giuliani, cocaptained the jets. Former president george w. Bush tossed a coin and addressed the fans. We remember a lesson of 9 11 that evil is real and so is courage. In seattle, a reminder of larger divides. Players linked arms to honor 9 11 and call attention to inequality as Colin Kaepernick has been doing. No, football isnt as carefree as it was 15 years ago. But neither is america. Still ahead, like thousand of kids he lost a parent in the but grandma, we use charmin ultra soft so we dont have to wad to get clean. Charmin ultra soft gets you clean without the wasteful wadding. It has comfort cushions you can see that are softer. And more absorbent, and you can use up to 4 times less. Enjoy the go with charmin. It is estimated 3,000 children lost a parent in the september 11th attacks. For many the trauma has followed them well into adulthood. 15 years later, brook silverbranga caught up. Reporter before he moved from new jersey he long did what he avoided visited his fathers name at the memorial. I just stood there for a while and let it come out. It was like now i can go. Now i can leave. Reporter the visit that finally helped him make peace with his fathers death was 12 years after 9 11. We first talked to matt as the First Anniversary approached. He was a rebellious 15yearold with big plans. I had my dream of being a doctor the i know my dad wanted me to succeed. Would be happy to see me grow up and go through medical school and pass all my classes and whatnot and make a lot of money and be happy. Reporter how did that dream turn out . It turned out. Reporter today dr. Van auken in his final year of medical residency. But his reasons for practicing medicine have changed. Instead of a lucrative specialty he decided to become a family doctor. The moments of healing after my fathers passing were in the people who approached me and said, man this sucks. And sat with me. Reporter you want to be that for someone else . Yeah. Reporter matt says he found peace through daily meditation and yoga. And annual letters to his dad. Then i lit the letter on fire and let it i offered it away. Reporter last september he wrote about his marriage to jamie. This year he will share the news theyre expecting a baby. I am going to be proud to tell them what kind of a person their grandfather was. Tell them about what he taught me. Thats to me the foundation for this family that jamie and i are building together now. Up next, an iconic flag from new yorks ground zero comes home. ,,,,,,,, finally, you may remember the photograph, three new york city firefighters raising a flag at ground zero after the twin towers fell. The flag disappeared a short time later. Now, 15 years later it has apparently been recovered. Reporter it was late in the afternoon of september 11th, 2001. The towers were down. The death toll was rising. Thats when it happened. Three firefighters on a smoldering pile of rubble hoisted a pristine American Flag taken from a yacht nearby. Tom van nessen was new york citys fire commissioner at the time. The guys were going through a terrible pain and suffering trying to rescue their brothers and civilians who we hoped were trapped and going to be able to rescue. Any kind of symbol like that flag or anything else that made the troops think there was, there was hope, there was something bigger than just us, was helpful. Reporter photographer Thomas Franklin snapped a picture of the moment. It made so many photos of the rubble, this image stood out of symbol of unbroken will, a defiant roar that echoed from coast to coast. The flag itself became famous. Flying over yankee stadium, the uss roosevelt, and new york city hall. But, there was a problem. When they brought it back to city hall, and the three firefighters in the audience they said thats not the flag. How did they know . These guys are sharp guys. They knew it was so big it was definitely not the flag they had that day. Reporter november of 2014, 13 years and 3,000 miles away, the missing flag resurfaced just as mysteriously as it once disappeared. Jim masingail detective with everitt Washington Police department which investigated the case. The flag had been turned into the Fire Department in a joanne fabrics bag. Kind of wadded up thrown in the bag. We looked at the flag. We had photos we had taken of it. It looked very similar to what we were seeing in the photographs and in the video. So, we thought, well, it is either an elaborate hoax or the real thing. After months of careful analysis, authorities are 99 certain it is indeed the real thing. Same size. Same rigging. Coated in the same dust that once choked ground zero. How was it lost in the first place . And who is the mystery man seen here in a police sketch, who returned it . We want to know all the details. Try to actually trace it back throughout the years. So th