Those are incredible patriots. And launching a fresh attack against congresswoman ilhan omar. Spiderman moves. A man scales an Apartment Building on fire in a daring f odelse was in that situation they would do the same thing. Why he risked his life to scale that building. And one giant leap, the historic walk on the moon happening exactly 50 years ago today as those involved in the mission reflect on this major landmark in Space Exploration. Good morning, everybody, lets show that historic video again. 50 years later the images of Neil Armstrong descending that ladder down to the lunar surface. These images still have the power to amaze. Heres an amazing number, 600 Million People around the planet watched this moment live. Coming up, were going to talk to two people who played a key role in our mission to the moon. Thats such a cool moment in history and i should warn you guys, i have a little bit of a summer cold im fi i feel fine. Youre hanging in there though. Yeah. So just bear with me this morning. Of course. First though, we start with that dangerous heat across much of the country. Look at the map. Heat alerts in 29 states from new mexico to maine. This really is a dangerous situation. At least one person has already died. And we have these images from the sweltering subway platforms here in new york city. This intense heat is putting a train on the citys power grid. We begin with Kaylee Hartung who is inside con eds Emergency Response center. Good morning. Reporter good morning, whit. Officials from con edison telling me this morning they are very confident new yorks power grid can handle the stress. While the forecast has been preparing people across the country all week long for thesen beear. This morning, more than half the country is on alert for dangerous heat. New york, one of 29 states with soaring temperatures. Overnight, thousands of subway commuters were forced to wait in sweltering this strain coming just one week after a blackout affected manhattan. Con edison dedicating 4,000 crew members to respondinny issues that might arise. We expect demands this weekend to rival alltime weekend peaks. Reporter in baltimore as the heat index reached triple digits, thousands were without power while crews worked to get the lights back on, the loss of electricity under investigation. In chicago, firefighters were called to rescue a 6monthold baby who was trapped in a hot car for at least ten minutes. Temperatures reaching 112 degrees, the baby expected to be okay. In arkansas, former nfl lineman and super bowl champion mitch petrus died of an apparent heat stroke thursday night after working outside in brutal conditions all day. As temperatures broke 100 in kansas and iowa, roads buckling. In wisconsin, First Responders battledwo massi fires, enduring 90degree heat before getting the flames under control. The combination of heat plus humidity could make it feel 5 to 10 degrees hotter, even harder on our bodies. Airlines taking extra measures for outside employees, providing cooling stations and cooling neck bands. Hospitals on heightened alert. What are your concerns in these extreme temperatures . The bodys normal mechanisms which usually regulate temperature fail to work. This can lead to multiple problems, inflammation, cell death and eventually organ failure. Reporter here in con edisons Emergency Response center, theyre monitoring the usage of the more than 9 million customers they serve. You can see on the screen behind me, the highest usage in brooklyn and queens. That is to be expected on a weekend. Dan, officials tell me theyre glad this isnt hitting on a tuesday because that would mean higher usage in manhattan when you think about all of those office buildings, the air conditioners and the elevators they would use. Speaking for me and eva, were glad that the power seems to be working because we lived through a blackout last weekend. Kaylee, thank you very much. We also want to acknowledge this is your first time on our show so we would like to welcome you to the Good Morning America family. Thank you guys for that. Im thrilled to be part of the team and glad to be indoors with power at the moment. Thanks again, kaylee. Kaylee and i used to Work Together as well years ago so i can vouch for her. Not sure she can do the same for me though. We wont give her that answer. Kaylee, good to have you on the team. We want to transition to the u. S. Tensions with iran after iran seized a british oil tanker. Stephanie ramos is in washington with the latest on that story. Stephanie, good morning. Reporter whit, good morning. Tensions between iran and the u. S. Have been escalating since President Trump withdrew the u. S. Last year from the nuclear deal and imposed economic sanctions on iran but this latest move by iran, seizing that british tanker, is possibly one of their more significant escalations since may. Iran making its next move, seizing a british flagged tanker with 23 crew members on board traveling through the strait of hormuz. Iranian officials initially said it violated International Maritime laws but now say the british tanker collided with an iranian fishing boat. A liberian flagged tanker was also briefly seized but later released. President trump responding to the bold move friday. We dont have very many tankers going in but we have a lot of ships there that are warships and well talk to the u. K. Reporter the British Foreign secretary says hes extremely concerned by the seizure, calling it unacceptable, even telling u. K. Shipping to avoid the strait of hormuz for now. President trump calling out iran. This only goes to show what im saying about iran. Trouble, nothing but trouble. Reporter this incident comes just two days after the u. S. Claimed one of its warships downed an iranian drone in this same area. Iran says, however, it did not lose an aircraft, releasing this video to prove it, claiming the video is from the drone the u. S. Supposedly destroyed. The timestamp, however, is after the hour the u. S. Says the drone went down. We shot down the drone yesterday . Theres no doubt about that, right . No doubt about it, no. We shot it down. Military Officials Say the u. S. Has intensified air patrols over the strait of hormuz and in response to this latest tanker seizure, the u. K. Says theyre not looking at military options but instead looking at a diplomatic way to resolve the situation and add that if the situation is not resolved quickly, there will be serious consequences. Eva. Stephanie ramos for us in washington. Here at home, President Trump is doubling down on his criticisms of four democratic congresswomen while defending attendees of his rally who chanted send her back. Abcs White House Correspondent tara palmeri live with more. Good morning to you this morning, tara. Reporter good morning, eva. The president seems to want it both ways. Just this morning he tweeted about the controversy again saying that he didnt lead the crowd on into this racist chant. He said that he wasnt happy with the chant either but then goes on to call his supporters patriots and said they did it because they love the usa. This morning, a defiant President Trump. You cant talk that way about our country, not when im the president. Reporter walking back his disapproval of these racist chants. [ send her back ] reporter directed at four minority congresswomen. Instead, defending his supporters. Those are incredible people. Those are incredible patriots. Reporter and doubling down with another attack against minnesota congresswoman ilhan omar. But im unhappy when a congresswoman goes and says im going to be the president s nightmare. Shes lucky to be where she is. We are going to continue to president. His policies because his policies are a nightmare to us. Reporter this reversal comes ju one day told reporters that he felt uncomfortable with the uproar at that rally in North Carolina where attendees echoed these earlier tweets from nearly a week ago after telling alexandria ocasiocortez, rashida talib, Ayanna Pressley and ilhan omar to, quote, go back to the countries they came from, the president has railed against the congresswomen for days. They hate our country. They can leave, they can stay, but they should love our country. Reporter all four lawmakers are american citizens. Three born in the u. S. And omar born in somalia. Another voice has joined the public outrage, former First Lady Michelle Obama who had this to say. What truly makes our country great is its diversity. We must remember its not my america or your america. Its our america. This latest firestorm might be a sign of whats to come in 2020. The president embracing a Campaign Based on racial divisions and identity politics. Its not unlike how he started his First Campaign by calling mexicans rapists. Dan . Tara palmeri in new jersey, thank you. A lot to talk about so lets bring in abc news chief political analyst matthew dowd who joins us from texas. Whats your take on this flurry of comments from President Trump about the send her back chant . Is he walking back his walkback from thursday or do his new comments in any way nullify his apparent disavowal from thursday . To paraphrase john kerry, he was for it before he was against it before he was for it again. I think all of us know donald trump. Weve known him since he came down the escalator when he called mexicans rapists. I dont think donald trump can walk away from it not only because of his constituency but because of who donald trump is. This is who donald trump is. I think we have to be clear about that but i think donald trump tried to get credit for a walkback but again, within 24 hours he was right back in the middle of it. So, tara palmeri was saying a few moments ago from new jersey where the president is spending the weekend that she thinks this is the way hes going to campaign in 2020. Im just wondering, from the standpoint of a cold clinical political calculation, do racially charged comments help or hurt the president with the voters in the key states that he needs to win in 2020 . Well, one, i think the president just does these things as guttural. I dont think he has some grand political strategy, but i think with the president , ever since he took office, has not made one step to expand his constituency. Every day he goes without expanding his constituency when he started with 46 and hes dropped is a bad day for the president. I think it helps consolidate his base but it doesnt do anything to expand his constituency to get to a point where he can again take michigan, pennsylvania and wisconsin. He has a solid base and he continues to solidify that but its a smaller and smaller base. One thing ill point out on this day of the lunar landing, dan, is that the democrats have to not go small and divisive. They have to go big, just like the landing. For thousands of years men and women looked at the moon in awe and curiosity and then from being unified through the common good, through working diligently, we were able to send a man to the moon 50 years ago today. So democrats need to go big like that and not be small and divisive as the president seems to have a strategy of. More democratic president ial debates coming up very soon. Matthew dowd, we really appreciate your analysis as always. Thank you, sir, and have a great day. Whit, over to you. Dan, thank you. Other stories were following this morning, more protests in puerto rico as u. S. Officials and president ial candidates join the calls for the governor to resign. Governor ricardo rossellos official residence under siege as thousands of Puerto Ricans have taken to the streets over the last several days after a series of private chats between rossello and his associates were leaked. The governor allegedly insulting women, his political opponents and even victims of Hurricane Maria in those chats. Scary moments aboard a cruise ship on its way from alaska to seattle. The celebrity solstice had to make a uturn and return to port following a power outage shortly after it took off friday evening. The coast guard helped guide the ship back to port where they say power came back on. No one was hurt. The celebrity cruise ship will have to undergo an inspection before it can head back out to sea. Now to a murder mystery on a highway in canada. An American Woman and her boyfriend killed during a road trip. Marci gonzalez is in our Los Angeles Bureau with what that womans family is saying. Good morning, marci. Reporter good morning. They are of course heartbroken saying the two were brutally killed. While police arent sharing many details, the big concern is that the killer is still on the run. This morning, an urgent manhunt in the mysterious murder of an American Woman and her boyfriend in canada, their bodies found along the side of a rural highway. I dont know who would do Something Like this. This was someones son, someones daughter. Reporter chynna deeses mother says the 24yearold from charlotte and her boyfriend, lucas fowler, had just set out on a road trip to see canadas National Parks when they were killed some time between sunday evening and monday morning, their van found parked nearby. This is an International Murder case in canada of an australian and an american, and still no large public travelers notice or anything. Reporter police are also not saying how they were killed. Now urging anyone o s that stretch of alaska highway 97 in British Columbia and may have dashcam video from the area to call investigators who are desperately scouring for leads. Were trying to comb thros s free. This morning they are pleading for answers. It doesnt add up and its concerning, and were never going to get full closure on this. Its going to hurt the rest of our lives. Fowlers father is a Senior Police officer in australia. This morning his colleagues say theyve learned both victims were shot to death. Investigators in canada are also clarifying that this does not appear to be connected to any other cases and they call finding this killer their top priority. Dan. Lets hope it is. Marci gonzalez, thank you very much. Moving on now, an american man is under arrest accused of being an isis fighter. Prosecutors say 42yearold Ruslan Asainov is facing terror charges, is in federal custody. Hes a naturalized citizen. Left brolysya in013. B ta and he trainer of new recruits. He was arrested after allegedly enticing a person who turned out to be an nypd informant. To join isis. Equifax is reportedly nearing a deal to pay out close to 700 million to settle numerous data breach. Investigations by federal and state agencies as well as a class action lawsuit. The investigations were sparked by a hack in 2017 that exposed millions of americans personal data including names, Social Security numbers and birth dates. The settlement would allegedly establish a fund to help those harmed by the breach and require equifax to make changes in how it secures data. Lets get back to the weather and that dangerous heat brnyangood morning to you. That dangerous heat wave continues all across the country. Check out our heat alerts. M newl the way towards maine. We have a heat advisory and an extensive heat warning. That means we could see an extended period of those dangerous realfeel temperatures. Speaking of that, this is what its going to feel like heading throughout this afternoon. Oklahoma city up to 105 degrees. Check out washington d. C. , its going to feel like 110. Then also further to the north, cleveland, 101 degrees. To make matters worse, these lows, we wont see any relief throughout the overnight hours. Well have those low temperatures struggling to get below 80 degrees. Even early sunday morning its already going to feel hot. Its going to feel like 87 in charleston. Look at washington d. C. Its going to feel like 91 degrees. Then still very hot throughout sunday afternoon. Heat index values in the 90s and the triple digits once again. Thats a look at whats happeng good saturday morning. Im lisa argen, waking up to this beautiful view in our east bay. A little bit of fog in the livermore valley, so low clouds and fog to get going. But then looking at a warmer day for your sunday. Today were still keeping it on the cooler side of average. 77 in fremont. 70, richmond. Look for mid 60s, San Francisco. Low 80s in concord and livermore. We warm up inland tomorrow, getting quite hot by the middle of next week. So just very hot again today but we do finally have some relief heading into next week in the way of a cold front, so we just have to be patient. Just get through the weekend. Yes. Im so happy to have you here because today we actually outnumber the men at the table. Hey i just noticed that. I was like, for once. A little girl power. Uncomfortable smiles. We just smile and nod. Yes, yes. Great to have you. Thank you. A feelgood story this morning for us to focus on. A man in philadelphia risked life and limb as he climbed up an Apartment Building on fire and now were learning more about why he did it. Abcs diane macedo is here with the story. Good morning. Good morning. This man, jermaine, works in construction. Hes used to climbing but he never expected he would use that Training Like this. When he arrived to a burning building and learned his mother was trapped inside. Hen he arriv building and learned his mother was trapped inside. Its a heart pounding and heartwarming tale of bravery. Hes climbing all the way up the outside of the building. Reporter a man scaling a 19story burning building in philadelphia with the hopes of reaching his mother trapped inside. Im not just going to sit there and let my mom die. Id rather risk my life falling than let her sit in there and die. Reporte