Camera. And good morning, america. We have big news overnight in the fight against isis. The chief executioner, jihadi john, targeted by a drone in syria. You are see it right there. That is an isis stronghold. He is believed to be dead. The u. S. Had been hunting him for months, but one of the most wanted men on earth who terrorized the world with those brutal terror tapes executing those three americans and publicly calling for war against the united states. He also taunted president obama persosolly in those tapes. Our full team is on the story this morning starting off with abcs brian ross. Good morning, brian. Reporter good morning, george. He became the face of evil and the u. S. Had been tracking jihadi john, a british citizen for months. U. S. Officials say the drone strike was launched late nurse thursday as he left a building and entered a vehicle. Milita and intelligence officials watched live a video feedback in washington and one official told abc news it was a 100 flawless direct hit. This morning, praise for the u. S. Effort from leaders around ive always said that we would do whatever was necessary, whatever it took to track down emwazi. Today i want to thank the united states. Reporter the world first came to joe jihadi john a little over a year ago when he appeared wearing a black mask holding a knife and threatening the life of american journalist james foley. His voice was disguised but he could not hide his british accent. You have plotted against us and gone far out of your way to find reasons to interfere in our affairs. Reporter one after another, he presided over the murders of foley, american Steven Sotloff and peter kassig, plus two britons and then two japanese hostages. Earlier this year, his true identity was revealed to be mohamed emwazi, seen here wearing an american baseball cap, the son of kuwaiti parents kingdom. Even as a schoolboy in london, emwazi was spotted by teachers as having a violent streak. One teacher told the bbc at age 11 he was put in anger management therapy. Wed find that hed get very angry and worked up and it would take him a long time to calm himself down. Reporter as a young adult he joined isis flaunting his role as executioner with his piercing eyes and gravelly voice he became one of the worlds most wanted men. Our knife will continue to strike the necks of your people. Reporter the parents of murdered hostage james foley said the action against him wasas of small solace, quote, this huge effort to go after this deranged man filled with hate when they cant make half that effort to save the hostages while these Young Americans were ill alive. Its unfortunate that the government doesnt get it. They think it gives us solace, but it doesnt. U. S. Officials this morning say they presume that emwazi was killed in the drone strike based on what they observed of the hitch the vehicle he was in burst into flames and one official said jihadi john may never have the dna. May never have the dna. The long hunt coming to an end and Abcs Martha Raddatz in washington. What does it say about our overall intelgence capabilities in that area . Reporter well, amy, clearly even with limited intelligence assets we managed to track down some of these isis fighters and leaders. If confirmed he is by far the most prominent. That may have helped him find him. Its never easy to track any single person. You have to figure out their pattern. How would he travel . Who does he meet with . How does he got the execution messages out. By being the public face of this Terror Campaign jihadi john was tempting fate. More people would know who he was, where he stayed, especially with that british accent. But even with all that as we said, it took more than a year to find him, amy. So, martha, does this make a difference in the fight against isis . Does this have an impact . Reporter its without question aig symbolili victory for the u. S. And britain and you can be sure well make the most of it in terms of countering the isis message but he was not the man leading the fight and surely someone will step in to take his place. The isis network remains very strong and very widespread, but this strike, if proven to be jihadi john, is a blow to the group for now, amy. All right, Martha Raddatz in washington, thank you. The fight against isis front and center in my exclusive interview with president obama yesterday when we spoke in the cabinet room shortly before the strike, the president acknowledged how difficult it would be to eliminate the thrhrt from that deadly terror group. Even your friendly critics, Fareed Zakaria says what you have on the ground is not enough. Every couple months you will be faced with the same choice, back down or double down. I think what is true is that this is always been a multiyear project, precisely because the government structures in the sunni areas of iraq a a weak and dont have Ground Forces there in sufficient numbers to simplyy march into al raqqah and syria and clean the whole place out. And as a consequence, weve always understood that our goal has to be militarily constraining isils capabilities, cutting off their supply line, cutting off their financing. But isis is gaining strength, arent they. I dont think theyre gaining strength. What is true,rom thetart our goal has been first to contain and we have contained them. They have not gained ground in iraq and in syria theyll come in, theyll leave. But you dont see this systemic march by isil across the terrain. What we have not yet been able to do is to completely decapitate their command and control structures. Weve made some progress in trying to reduce the flow of goal has to be to recruit more effective sunni partners in iraq to really go on offense rather than simply engage in defense. So what do you think when you hear someone like ben carson get and say, hey, this would be easy . We can take isil out by bombing their oil fields. What i think is that he doesnt know. About it and, look, george, i think its fair to say that over the last several years, ive had access to all the best military minds in the country and all the best foreigngnolicy mines in the country and im not running for office and so my only interest is i success and if im down in the situation room talking with people who have worked in these regions and have run Major Military operations from the chairman of my joint chiefs of like general allen who was involved in iraqi operations back in 2007 2008 and they dont think its easy, then its probably not easy and what weve been able to do is to shape a strategy that first and foremost contained the momentum that isil had gained, but until we get the syria political situation resolved and until assad is no longer a lightning r r for sunnis in syria and that entire region is no longer a proxy war for shia sunni conflict were going to continue to have problem. That could take a generation. Well, i would distinguish between making sure that the place is perfect, thats not going to happen any time soon, with making sure that isil continues to shrink in its scope of operations until it no longer poses the kind of threat that it but to neighbors in the region like jordan or saudi arabia and that the humanitarian crisis thats taking place with millions of people who are fleeing the country, that they can be relieved. Lets bring in jon karl from the white house for more on this and,d,jon, the president acknowledging how difficult this fight is but as martha pointed out this morning, a big symbolic victory for the president. This is a hugely important symbolic victory for the white house. Jihadi john is seen as somebody who was not just the public face of isis but somebody who was key in the recruitment in the west and also as you mentioned, george, somedy who repeatedly taunted the president , mentioning him by name in virtually every one of those beheading videos. And, jon, we heard the president say ben carson doesnt know what hes talking about on the fight against isis. Carson also taking fire last night from donald trump. Reporter yeah, donald trump is on the war path. This was his most overthetop attack yet, really a bizarre speech overnight taking on the man who is now the frontrunner or chahaenging him as the frontrunner in the polls, dr. Ben carson. Its Donald Trumps most overthetop attack yet going after ben carson using words carson wrote in hisis autobiography about his troubled youth. When he said he had a, quote, pathological temper. So he said he has pathological disease. Now, if youree pathololical, theres no cure for that, folks. Okay. If youre a child molester, a sick puppy, youre a child molester, theres no cure foror that. Theres only one cure. We dont want to talk about that cure. Thats the ultimate cure. Theres two. Theres death and the other thing. Reporter andtrumps rant didnt end there. I say what the hell have we come to, what have we come to when we have to believe this kind of stuff and were going to considers himself to have pathological disease. Read the definition in the dictionary of pathological disease and im not saying it. He said it about himself. Reporter in the most bizarre part he brought out an imaginary rive to imitate a scene in his autobiography where as a teenager he said he tried to stab a friend hitting him in the belt buckle. How stupid are the people of iowa . How stutud are the people of the country to believe this crap . Reporter carsons spokesman dismissed it as a reaction to carsons standing in the polls saying, quote, mr. Trump has resentment when he sees dr. Carson rise. And, george, that speech went on for 95 minutes, trump was going after everybody. He called marco rubio a lightweight and went after Carly Fiorina calling her carly whats her name. Really bizarre. Typical candidates if they call wa voters stupid pay a price. Its never been tried before. Thanks very much. You can see a lot more of my interview with the president on this week. We turn to a secret Service Officer who worked at the white house under arrest this morning accused of sending sexually explicit messages and pictures to someone he believed was an undedege girl allegedly sending some while he was on duty. Abcs Pierre Thomas is in washington with the latest on that story. Good morning, pierre. Reporter good morning, amy. Authorities say when confronted officer Lee Robert Moore admitted to the sordid online conversations and to sending a naked picture of himself to what he thought was a 14yearold girl and some of these communications which took place over a period of monons happened while moore was on duty at the white house. He also allegedly said he sent sexually explicit communication to other underage girls and, amy, it gets worse. Moore is accused of trying to arrange a meeting foror a sexual and, pierre, tell us what type of work did moore do for the white house and whats next in his case . Reporter moore claimed that he actually worked clearing people into the white house. Hes due in court this morning as Legal Proceedings are now fully under way. This is the latest embarrassing incident for secret service trying to get over a prostitution scandal and allegations of drunk agents and all remember that fence jumper who got inside the white house. Amy. All right, Pierre Thomas, in washington, thank you. A lot of challenges for the secret service. We move on to strtrg winds causing some coastal flooding and, ginger, that wind and cold air is moving toward us today. We just started to feel the beginning of it here in new york city but look at these pictures, incredible image, waves up to 15 feet on lake michigan. Thats grand haven. This is lake erie just blasting the shoreline and anything in its path. You can see the huge waves getting in there. Well, now that is because of 50mileperhour winds. We have wind advisories throughout the app layings up to western new york today. The gusts will easily be 30 to 40 Miles Per Hour and, george, it gets very cold. Ill show y y how coldoming up in the nations weather. We will bundle up. Dan harris in with the other top stories. You have more breaking news in this fight against isis. Another major blow to isis this morning. Kurdish fighters with the help of american air support have reportedly taken control of the city of sinjar, disrupting an isis supply route between Northern Iraq and syria. The defense secectary ash carter has fired his top military adviser. Army Lieutenant General ron lewis is accused of misconduct. Pentagon officials have not confirmed reports of an alleged improper relationship. The faa investigating more dangerous laser attacks on aircraft overnight. Dozens of planes and helicopters have been targeted this week, new cases have been reported overninit in dallas, los angeles and in phoenix. New fallout from the uprising against alleged racism on college campuses. Claremont mckenna college, the head has stepped down and university of missouri named one of the first black graduates of its law school as the interim president. A bit of controversy in the nfl. Fans are speaking out against the new bold colored nike uniform, the jets and byes wore them last night. Critics say people who were colorblind couldnt tell the difference between solid red and green. The bills, by the way, in red won theegame. And finally here, dad of the year. In anticipation of the new star wars movie a guy named colby powell who happens to be a contractor built an enormous death stata for his kids. Its 23 feet tall, weighs 400 pounds. He used a 70foot crane to hoist it on top of their house in california. Heres the kicker. The thing lights up atninit. Oh. On behalf of all of the other dads in america, i want to thank this colby guy for making the rest of us look like complete losers. Thank you for that. Its a good thing that my son is 11 months ole, doesnt speak english and has no idea what star wars is. All the neighbors are thanking you for not doing that. Your son isoo young to know youre a loser. I have a feeling he suspects it. All right, dan, thank you. Well, the top nfl player who has had ten concussions about to take the field once again. Thatat story in just 30 seconds. Back now at 7 17 with the star nfl receiver returnsing to the field. Many worried about his health and abcs ryan smith has the story. Welker makeses the catch. Reporter a 59 dynamo going from undrafted to one of the most dominant pass catchers of his era. He runs the route. Reporter a prime target for tom brady and Peyton Manning known for making the big play at a big price. Hes had i history of concussion concussions. Reporter but this morning after nearly a year away from the game, wes welker returning to the nfl despite suffering multiple concussions over his 12 years in the league. This is one you watch in my opinion with your eyes closed. I am scared for him. Reporter the fivetime po bowler signing with the rams sunday, once suffering three concussions in less than a year from hits like this. Official is all over it. Reporter thats not stopping the 34yearold from m aying the gaga he loves. Wide open is welker. Reporter telling espn in june. Cant say im really worried about it. I mean i know a lot of people think i should be more than i am. Ill cross that road when i get there. Repetitive head trauma chokes the brain. Reporter the up coming movie highlighting. Dr. Julian bales played by alec baldwin say players like welker could place themselves at risk. I think everyone in his style of play has to be concerned. You really have to weigh the risk benefit of further participation. Reporter some imploring welker to hang up his cleats. I dont want him to play because of these concussions. This thing is no joke. Reporter but the nfl star telling the st. Louis postdispatch hes not at all wowoied hoping to suit up on sunday. The raps telling abc news their deers medically cleared him. He wont look for contact on the field, he says but not thinking about it eitherr adding you start secondguessing yourself you start getting in trouble. We hope hes okay. So much more ahead. New details in that murder mystery. An urgent manhuhu for the killer who shot a young pastors pregnant wife. A community and Police Searching and caught on camera. A Convenience Store clerk rescuing the victim of a a kidnapper. How he shoe she was in trouble the moment they walked in the door. All that coming up on gma. Look, the wolf was huffing and puffing. Well, when you have copd, it can be hard to breathe. It can be hard to get air out, which can make it hard to get air in. 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