And total eclipse of the heart total eclipse of the heart. Her smash hitle she sings as the cosmic phenomenon reaches its peak. And a couple making their own mark. But first night at five. Good evening, thanks for joining us. We begin with breaking news on the nations long war in afghanistan. President trump in a primetime address declaring the u. S. Must continue the fight. The consequences of a rapid exit are both predictable and unacceptable. 9 11, the worst terrorist attack in our history was planned and directed from afghanistan. Because that country was ruled by a government that gave comfort and shelter to terrorists. And now our chief Global Affairs analyst joins us. Tonight the many president taking ownership of americas longest war after months of internal debate, President Trump announced his strategy in the war in afghanistan saying will he go after terrorist safe havens and be defeat isis and taliban saying we will win. He said we will see overwhelming secretary authority to set troop levels and are favoring 4,000 more u. S. Troops. But in this speech the president emphasized the role of nato allies several already committed to sending additional force and he called out pakistan for sheltering terrorists saying that must change. But one thing he did not give was a timeline for withdraw. Past president s set time limits for troops. President trump said withdrawal will be conditionsbased, can bes on the ground, not timetables guide the strategy, the president said. Warning of repeating the same mistakes in iraq of a hasty withdrawal. Back to you. Martha, thanks, much more on gma tomorrow. For now we turn to the rare phenomenon that sent hordes of americans scrambling for tinted glasses and a good view. Its been 99 years since total eclipse was captured in the u. S. We go to the path of totality with abcs matt gutman. There it is. The celestial dance didnt disappoint, Great Solar Eclipse 2017 gracing city after city. Oh, my god. An hour and half of cosmic wonder that captured the nation. So happy. So happy i could cry. There we go, there we go. The sun is coming back. Its being regurj stated. Theres a star in the sky we can see. Oh, beautiful. Zooming along a 70 mile wide eff rivet of the country is called path of totality where 100 of the sun was eclipse by the moon, bathing everything in total blackness. Its spectacular. Look how dark and quiet. It is like being in the eye of a hurricane. A total Solar Eclipse can only occur during a new moon when the moon moves between the earth and sun casting a direct shadow on earth it happens twice every three years but most often on an ocean thats why todays event was so significant. It was the first one to go all the way across the continental u. S. In 38 years. This is an abc news special. Live coverage of the Solar Eclipse. The date, february 26, 1979, at the abc news desk, the venerable frank reynolds. Good morning this is a genuine special event the last total eclipse of the sun overt continent this century. On looking peering through what was considered protective eye wear. Noting in august 21, 2017 will another total eclipse be seen in northern america. It is so spooky. The temperature is dropping. Excitement is growing. Weve just gone completely dark. We have reached totality here. On the oregon coast line. Total eclipse of the sun in the small taun of madris oregon the population ballooning nearly 1500 drawing crowds well over 100,000 people spectators and journalists along. Im almost speechless. The crowd here is absolutely ectatic. Turn down the lights and see how dark it really is. Its pitch black here. This is the most incredible thing ive ever seen. [ cheers and applause ] for so many this will happen only once in their lifetime. Families driving far and wide to witness history. You guys drove nine hours. This is the second most beautiful thing ive seen in my life. Is that the first. The darkness marching east ward, averaging more than 2800 miles an hour. Scientists using every precious 340e789 to study the outer atmosphere. Because of the contrast between the darkness of the sky and dark sun you get a bright region with ring around the moon so it looks like a diamond ring and then the corona emerged. Across the path of totality hotels were fully booked. Couple hundred miles from the nearest airport middle of nowhere and so many people showed up because its smackdab in the middle of path of totality. Some calling it otherworldly and extraterrestrialestal. Here they had a cosmic coins against, the 62nd anniversary of a reported alien invasion that happened just about 200 or 300 yards from here. Celebrities posting their experiences on social media. Lady gaga to bill gates, Sarah Jessica parker not so expertly anywhe narrating their experience. The president and melania and son also enjoyed the view through their glasses. On total eclipse of the heart experience on this cruise with her classic bat llot. Total eclipse of the heart totally awesome. Do it again in 99 years. In the music city the sky went dark. The streets lit up. Weve been watching everybody else you came all the way from from the uk to come see this event. How you feeling . Amazing. Its a religious experience. Cosmic experience had some moon struck. The sun is slowly being taken out of the shadow. That diamond ring in the sky transforming to one on her finger, just moments after the totality the question asked and answered with a yes. And then that kiss. You literally had no idea this was coming. No idea. And then were you able to focus on the eclipse knowing right after the eclipse you had the biggest question of your life to ask someone. I was actually really into the eclipse it was so amazing but once it was over my brain switched thinking about when am i going to do this. Yeah it got a little nerve waking. We were both shaking, and crying. From a proposal to an outright wedding. While tens of millions of americans looked up at the sky. Who gives this woman to be wed. In st. Joseph, missouri right in the path of totality. On this very special day well get to say we witnessed one of the great cosmic events of the century. All eyes were on sam antha ad cameron. She once dreamt of being an astronaut. I went from being a kid to space, space, space. So she knew today would be the day. Every guest given special eclipse viewing glasses, decorates, no brainer, heavenly touches guys a spaceymotif. It should look really cool braid. Mr. And mrs. Kume. Couldnt be happier right now. And despite the cloud cover they held hands as totality approached. And darkness ascended. The couple already planning for the next total eclipse which will be visible in certain parts of america in 2024. Forethe Great American eclipse for 2017 ending in before going out to sea. May all of the world have peace and abc will bring you next eclipse 38 years from now. We certainly didnt know wed be the ones to keep his promise but have been honored to share this Great American eclipse with all you have at home. Now america looks forward to the next great nationwide eclipse, hopefully ill see you there in 2045. For nightline, im matt gutman in oregon. When we come back how eclipse tourism is rocking small town america. Does psoriasis ever get in the way of a touching moment . If you have moderate to severe psoriasis, you can embrace the chance of completely clear skin with taltz. Taltz is proven to give you a chance at completely clear skin. With taltz, up to 90 of patients had a significant improvement of their psoriasis plaques. 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Today america stood still, spell bound by a cosmic pot of dough and easy to see how for some people once in a lifetime is not enough. Suddenly you realize this is happening, this is real. People feel the hair standing on the back of their neck. You are standing in the shadow of the moon, people write pom poems. Cue the pink floyd music. One of the classics, eclipse. Everything under the sun its like a little kid watching his mother disappear. Thats scary. You know it should be there. Luckily it comes back. But because its so unnationurai think the experience is one you cant replicate in any other way. People get hooked on eclipses. This is my eleventh solar clippers. This is number 12 for me. They call themselves umbrphiles. Eclipsechasers. Galavanting around the world. Look at the ruby red color. Chasing the moons shadow. Never gets old for you. No. I will be chasing for the rest of my life. I absolutely know it. She doesnt just chase eclipses, she helps other communities to prepare for people like her. Really try not to be on the roads of you can zblx we caught up with her in torington, wyoming they approached this day with mixture of excitement and dread. Its a huge deal. I dont think theres anything to compare it to. The local h r block transformed into pop up eclipse store selling tshirts, tote bags and glasses. I imagine youre thrilled it wasnt april 15th. Exactly if it was we wouldnt be selling tshirts. Its been more than a senceny since the last total eclipse in wyoming, it was a very big deal too. David baron chronicles that in his best seller. The experience was the same, scientists knew it was coming. The path of that eclipse went right through the american frontier, the american wild west and among the scientists who went out to witness is a young inventor named Thomas Edison who came back with a new idea. If he didnt go to wyoming to see the total eclipse he probably wouldnt have been the first person to come out with the successful light bubblb. And four decades later, einsteins relativity theory came from watching stores. Giving the strongest evidence gravity was bending light. That was crucial to showing theory of relativity. In another small town in wyoming they wonder how they will get through it. We are in glendo. Population . 200. Plus 100,000 eclipse viewers . Yes. Wow. The town has a 11 ratio port potties to people. No hotels here. Visitors all watching. Farmers are charging 20 to park in their field. Theyre the center of the universe. Thats right. For two minutes. For 2 28 were the center of the universe. And oh, what a 2 28 it was. David baron says more than anything this is a moment of wonder. The closest thing on earth to space travel. Theres a certain amount of sadness it was over. Was so brief and so beautiful. He was in jackson, wyoming, catching it from a mountain top 10,000 feet up. Its that feeling of being in the presence of something much larger than yourself that humbles you. The path of this total eclipse cut right through those rural red states within driving distance of big blue metro areas like denver and chicago. This is a shared moment for all of us as americans for something thats not a natural disaster, not a school shooting, not an election were fight being, but something we can all get excited about. I think its important for the nation to have this moment of unity. A polarized nation sharing something awesome. Today we all looked up in wonder. In glendo, wyoming. Up next, remembering jerry lewis, celebrating the life and works of the legendary king of comedy. Abc news nightline brought to you by this this this is my body of proof. Proof of less joint pain and clearer skin. This is my body of proof that i can take on Psoriatic Arthritis with humira. 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I didnt realize youre not supposed to, theres nowhere really, is there some place i can put these. Would you like me to put these in a locker for you. I would certainly appreciate it, youre very kind. Heaven got a whole lot funnier. Thanks f