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 apartment. A daughter captured mrs. Clinton appearing woozy and losing balance as she was escorted into her suv. A short time later she emerged from her daughters apartment. How are you im feeling great. Feeling great. Ninan dr. Jon lapook is our chief medical correspondent. Dr. Lapook, what do you see in sh video. Reporter first its important to point out im not mrs. Clintons physician and im trying to put things in perspective based on limited information. But what i see in this video is someone unstedy and wobbly but conscience on a hot and humid day in new york city like today, a likely possibility is something relatively innocent persons Blood Pressure or pulse drop causing diziness 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. A total setup for a vasovagal. The normal immediate treatment is for a person to lie flat. That way its easier for blood to get from the heart to the head. One very good sign is that mrs. Clinton went to her daughters apartment rather than to a Medical Center and that she soon emerged apparently looking ninan we know mrs. Clinton has had Health Problems in the past but what are the concerns following this incident . Right, well, there are certainly other possibilities that can cause diziness and unstediness, we know mrs. Clinton has a history of blood clots including one in her head back in 2012 when she became dehydrated from a stomach virus, fainted and suffered a concussion. And she is on a daily blood thinner which carries an increased risk of internal bleeding. The next step for her medical team to decide is what further the is and crossing all the ts. Dr. Jon lapook, thank you for join us. Late today clintons doctor released a statement saying mrs. Clinton had previously been diagnosed with pneumonia and was advised to rest. And as we mentioned, there were Memorial Services across the nation on sunday. In remembrance of the september 11th attacks 15 years ago. Heres jamie yuccas. Reporter at ground zero in new york a thousand people including victims families, dignitaries and politicians march marked 15 years since 9 11. This is a country, were never more united. Reporter readings and additional singers were added for this milestone year. May you always do for others. . And let them do for you. . Reporter the day started with the traditional moment of silence. A bagpipe prosession played tolling bells filled the air. My dad vincent damadeo worked in the north tower. Reporter relatives read the names of those killed in the terror attacks. And my sister, maria, its been 15 years since i have seen that beautiful face and that funny smile. Reporter 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 thanks the men and women who have served the country since the attacks. Thanks to their Extraordinary Service we have dealt devastating blows to alqaeda. Weve delivered justice to osama bin laden. We strengthen our homeland security, we have prevented attacks, weve saved lives. Reporter in shanksville, pennsylvania, the town held a lantern lighting saturday night. Today hundreds gathered to flight 93. Tell stories of september 11th that encourage a new generation to learn about that day. Be better. Be braver. Reporter there are now more visitors to the World Trade Center sites than there were before 9 11, with the museum, a transportation hub, Shopping Center and more than 60,000 new residents now surrounding it. Reena. Ninan thank you, jamie. Our justice reporter paula reid sat down with u. S. Attorney general 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 friends, former federal Law Enforcement agencies without worked there. Reporter 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 affiliated groups. Reporter today lynch says the greater threat to the u. S. Is not well organized teams of foreigners but young loners with u. S. Passports. The threat is primarily from those individuals who were already here, the homegrown violent extremists. In the cases that weve 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 212. Reporter skillful use of social media helped isis inspire 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. How do you deal with that. Reporter virtually. If you put your finger on one of the biggest changes we have seen in the development of this threat. And we do see younger people, millenials as you indicated. They live online anyway. And certainly isil was taking advantage of that, using the internet and the online virtual pass instructions through. Reporter lynch says her successor must prioritize Law Enforcement cooperation at home and abroad. And thats something that i think lives on regardless of what administration is here or not. Because thats an issue that transcends either politics or position t really goats to the heart of protecting who and what we are as a country. Reporter paula reid, cbs news, washington. Ninan paula reid, thank you. Attorney general Loretta Lynch will be among our guests tomorrow morning 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 tomorrow on cbs. A cbs news poll out today finds 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 about seven points. Barnett and cbs news election director Anthony Salvanto in washington. On this 15th anniversary of 9 11 your Battleground Tracker looks into how best to combat terrorism and there are big differences between donald trump and Hillary Clinton spoforters in answering that 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. Hi thats part of it but not as large a part of the solution. Lets just listen to how donald trump links terrorism to immigration. Were allowing people to come here and we dont know, do they turn on us . Are a small percentage of them bad because if a small percentage is bad thats not acceptable. Donald trump is seen as being less prepared to be commander in chief based on your numbers, is that changing . It is changing. He has made some progress on or so. We ask people, is what is it you want to see in a commander in chief. 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 done all trumps voters. Hillary clinton voters by contrast are looking for a president that starts with Hillary Clinton made wave this weekend with something she said at a fundraiser on friday. Lets listen to that. To just be grossly generallistic, you can put half of trumps supporters into what i call the baskets of deplorables. laughter right . The racists, sexist, homophobic xenophobic, islam foabic, you since then clinton said she regrets saying half but stands by the sentiments. She has been trying to woo donald Trump Supporters as well. Any proof that that is working . Some of his supporters of what we call reluctant republicans who have not quet been sold on donald trump. Hes not doing as wells with republicans as she has been doing with democrats. But we do not see a wholesale movement of republicans over to clinton nor democrats over to trump. Thanks for walking us through all that new information. Our cbs newel Anthony Salvanto, reena, back to you. Ninan in syria skis fire is expected to begin monday, part of an agreement between the u. S. And russia who have been fighting on opposite sides of that long and brutal war. As heres jonathan vigliotti. Reporter today new rounds of air strikes pounded aleppo, already raf vaj ravaged by the fie year civil war. More than 100 people were killed across syria in a series of weekend attacks. Soon enough under the agreement, the u. S. , russia and the russia backed assad regime will stop their air strike so humanitarian air can be delivered to civilians. U. S. Backed rebel forces have also agreed to pull back from a supply route to aleppo and create a demilitarized zone. Its the partial ceasefire holds for one week, the u. S. And russia will then carry out joint air strikes against the enemy, the Islamic State and other militant groups. Secretary of state john kerry forged the deal with his russian counter part in geneva on friday and acknowledged success wont come easy. A similar deal was reached in february of this year. But reena t fell apart when russia moved heavy artillery into aleppo to help assad forces. A lot of people will be watching this one, jonathan, thank you. Well, for nearly two weeks to hanjin shipping have been stuck at sea after the south Korean Company filed for bankruptcy. A judge has cleared the way for some of those ships to unload. Heres mireya villarreal. Reporter docking at the port of long beach, california, the hanjin greece is finally starting to unload millions of dollars in merchandise. Ships were left stranded after the company couldnt cover its fuel bills or guarantee it could pay its employees. Patrick kelly represents impacted workers. Theres another ship thats out on thee we dont know what is happening with that. We dont know what the conditions are of those workers on those ships. Reporter hanjin handles about 8 of the worlds transpacific shipping. At its worst the south koreanbased company had dozens of cargo ships floating at sea filled with 14 billion in product from Companies Like samsung, niek and forever 121. On friday a u. S. Bankruptcy judge allowed four ships to dock. So far only one has. Industry Leader Association says the hanjin delay could impact one of the biggest shopping days of the year. Its september and this really affect the Holiday Season . There are long supply chains and this is the beginning of peak season. And this is when a lot of the shipping is happening. So this does have the potential effect on the Holiday Shopping season, certainly black friday. But hopefully we wont get to a point where that becomes a certain. Officials are expecting a two to three month delay in some cases but reena, they are enlisting the help of other shipping companies and deploying up to 20 replacement vessels to minimize these delays. Ninan mireya thanks, coming up, 9 11 tribute in the nfl in this the first football at safelite, we know how busy life can be. These kids were headed to their first dance recital. When their windshield got cracked. But they couldnt miss the show. So dad went to the new safelitedotcom. Ore the girls even took the stage. Safelitedotcom is the fast, easy way to Schedule Service anywhere in america so you dont have to miss a thing. Yall did wonderful thats another safelite advantage. girls sing safelite repair, safelite replace. Whoa. Whats going on here . Oh hey allison. Im val, the orange money retirement squirrel from voya. Val from voya . Yeah, val from voya. You know, to show the importance of saving for the future. So youre sort of like a Spokes Person . No, im more like a metaphor. 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Vice president swroa biden helped unfurl a giant flag in philadelphia. Former new york city mayor rudy julianee could captained the jets and former president george bushed tossed a coin in we remember a lesson of 9 11 that evil is real and so is courage. But in seattle a reminder of larger divides. Players linked lives to honor 9 11 but also call attention to inequalities at 49ers quarterback Colin Kaepernick has been doing. Football isnt as carefully as it was 15 years ago, s but neither is america. Tony dokoupil, cbs news, new york. Ninan still ahead, like thousands of kids, he lost a parent in the september attacks. His story is next. He makers of. Diabetes can be a daily struggle, even if youre trying your best. Along with diet and exercise, oncedaily toujeo . May help you control your blood sugar. Get into a daily groove. . Share the spice of life. . . Baby, . From the makers of lantus . , . Slice it right. . Toujeo . 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Reporter before Matt Van Auken moved to portla o from new jersey he finally did what he had long avoided, visited his fathers name at the World Trade Center memorial. I just stood there for awhile and let it come out. Like now i can go. 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 at the First Anniversary approached. He was a rebellious 15 year old with big plans. Ive had my dream of being a succeed so he would have been happy to see me grow up and go through medical school and, you know, pass all my classes and whatnot. And just make a lot of money and be happy. Reporter so how did that dream turn out . It turned out. Reporter today dr. Van auken is 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 w said, man, this sucks. And sat with me. Reporter and you want to do that for someone else . Yeah. Reporter matt says he found peace through daily meditation and yoga ang annual letters to his dad. And then i light the letter on fire and i let it, i offer it away. Reporter last september he wrote about his marriage to jamie. This year will share the news that theyre expecting a baby. Tell them what kind of a person their grandfather was. Be proud to tell them about what he taught me. That is to me the foundation for this family that jiemie and i are building together now. Reporter brook silva vabragga cbs news, portland, oregon. Ninan up next an iconic flag from new yorks ground zero comes home. D migraines before they even start. Botox . Is for adults with chronic migraine, 15 or more headache days a month each lasting 4 hours or more. Its injected by a doctor once every 12 weeks. And is covered by most insurance. 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Finally tontd you may remember the photograph, three new york city firefighters raising an American Flag at ground zero after the twin towers fell. The actual flag disappeared a short time later. Now 15 years later, its apparently been recovered. Here again tony dokoupil. Reporter it was late in the afternoon of september 11th, 2001. The towers were down, the death toll was rising. And that is when it happened. Three firefighters on a smoldering pile of rubble hoisted a pristine American Flag taken from a yacht nearby. Tom was new yorks citys fire commissioner at the time. The guys were going through terrible, terrible pain and suffering, trying to rescue their brothers and civilians who we hoped were trapped and were going to be able to rescue. So any kind of symbol like that flag or anything else that made the troops think that there was hope, there was something bigger than just us, was helpful. Reporter photographer Thomas Franklin snapped a made so many photos of the rubble, this image stood out as a symbol of unbrocken will, a defiant roar that echoed from coast toest could. The flag itself became famous, flying over yankee stadium, the u. S. S. Roosevelt and new york city hall. But there was a problem. When they brought it back to city hall, and the three firefighters were out in the audience and they said thats not the flag. How did they know. These guys are sharp guys. They knew, it was so big t was they had that day. Reporter in november of 2014, 13 years and 3,000 miles away, the missing flag resurfaced just as mysteriously as it once disappeared. Jim massingale was a detective with the everett, washington, Police Department which investigated the case. The flag had been turned into the Fire Department in a Joann Fabrics bag. And then it was kind of wadded up and thrown in the back. So we looked at the flag. We had photos we had taken of what we were seeing in the photographs and in the video. So we thought, well, its either a very elaborate hoax or its the real thing. Reporter after months of careful analysis, authorities are now 99 certain that it is, indeed, the real thing. Same size, same rigging, coated in the same dust that once choked ground zero. But how was it lost in the first place. And who is the mystery man seen here in a Police Sketch who returned it . Joe daniels is National September 11th memorial and museum. I think that it is such an incredible story, we want to know all the details, to actually trace it back throughout the years, so that is something that we will be working on. But right now were just so thrilled that this is the actual flag, that its going to be here forever for people to see. Reporter tony dokoupil, cbs news, new york. Ninan and thases the cbs weekend news for this sunday, september 11th im reena ninan in new york. Thank you for joining us and here in cleveland, flags are flying at half staff today in remembrance of the 2,977 people who lost their lives on 9 11. Today marks 15 years since the attacks have happened. Good evening, im esparra. In new york city the nation paused to remember the thousands of lives lost 15 years ago in the worst terror attack in american history. There were tears, poems and pledges to never forget. We have more from the 9 11 memorial where the ceremony was held. Only the moments of silence interrupted the reading of names. Kevin w. Donnelly. Nearly 3,000 victims of the september 11 attacks were remembered one by one. Whenever you wore a ridiculous shirt such as the one im sporting, we didnt know whether to laugh or cry. Today we will do both. Those reading the names was walter, blind but able to resight some of the names, including his father. My father, walter a. Matuza junior, we miss you. Phillip hayes has been all ceremonies. He flew to to remember his dad. When they clang the bell for the time that my dad lost his life, that exact moment is like the most touching to me. At a ceremony remembering those lost at the pentagon, president obama haled the sacrifice of the fallen and resilience of those left behind. We come together in prayer and gratitude for the strength