Good evening. Its great to have you with us on this friday night. And we begin with new developments from new york to london and around the globe. Cities on high alert heading to the weekend. Terror alerts in major cities. The arrests, a 18yearold woman at an airport in london. And tonight, a chilling discovery from a crack down in belgium. Moving in, the gun fire, shouting. What they are now revealing about that sting. Who the terrorists are really targeting. In a moment the fbi warning to police stations in this country. The high stakes call with police from coast to coast. We begin with Alex Marquardt with new images from belgium. Reporter tonight, we are learning more about the Deadly Police raid in belgium that foiled a terrorist plot to Kill Police Officers in the streets and in the stations. Was meant to dismantle a terrorist cell. Reporter the after math, two suspects dead, bullet hopes. Boarded up win dopes. Police found ak48s, pistols, Communications Gear and police uniforms, ready for the attacks. Belgium is tiny, with just over 11 million people. But some 300 to 400 young men have traveled to syria to fight. In this city alone, just north of brussels, 28 residents are believed to have gone to fight. One of the reasons that per capita, belgium has sent more fighters to syria than any other western country. In the past 24 hours, the net closing in europe around suspected terrorists. The 15 arrested in the belgium plot. 12 detained in france. In berlin, a series of raids nabbed two people. At a london airport, a 18yearold woman arrested on suspicion of terrorism. While across the ocean, the u. S. On guard after this man, allegedly plotting to bomb the capitol. Police now on high alert from new york to london. The uk tonight raising the threat level against Police Officers to its highest point in history. Meaning an attack is very likely. And tonight, a warning from the europe top counterterrorism chief saying there is no such thing as 100 security and preventing another attack is impossible. Alex, thank you. Here at home, the fbi Warning Police chiefs coast to coast that american Law Enforcement should be on heightened alert as well. The nypd expanding their training. What to do with an active shooter. It comes after an arrest at home, the ohio man charged with plotting an attack with the capitol. And the other video, the images from a quarry in West Virginia, two cars pulling up. The terrorist who thought he was meeting with al qaeda operatives. Abcs Pierre Thomas on yet another case tonight. Reporter caught in a fbi scheme plotting a massacre of congress. Seen here driving to a West Virginia quarry with men he thought was al qaeda to test a suicide bomb. I want to you place the call and you can see how it works. Okay, now hit send. Whoa reporter a bomb he did not think was big enough. This is not strong enough, man. Reporter and there are many more like him. Sammy, a would be terrorist, caught in another fbi sting in arsenal to attack tampa with a suicide vest, explosives and assault weapons. Would it be fair to say that fbi has dozens of investigations like this any given time. Thats fair. Reporter that is sobering. It is. Reporter and all those terrorism cases deserve a lot of resources. If you follow one person 24 hours a day that is a commitment of 20, 21 agents. Reporter today, authorities warned they are concerned about isis and al qaeda using social media to radicalize a rising number of Young Americans and a terrorist who is inspiring a new generation of killers from the grave. This is a pay back for the honorable reporter the concerns that the fbi director himself this week held an unusual Conference Call with state and local police to urge vigilance and to take tips seriously. Pierre is live. I want to get back to word tonight that the new York City Police commissioner wants to expand training in the light of this . Reporter the commissioner is expanding training for active shooter situations in which killers show up with assault rifles at soft tacts like malls and schools. More city officers to get more training and more fire power. Pierre, thank you. There is breaking news this evening from the Supreme Court. Announcing they will tackle the abate of samesex marriage. Gay marriage now legal in 36 states. The courts decision comes nearly three years after president obama tells Robin Roberts saying he had gone through an evolution on the issue and the time had come. For me personally, its important for me to go ahead and affirm that i think same sex couples should be able to get married. And then came 83yearold edie windsor, who emerged that after 33 years with her partner, caring for her after a long illness, that their marriage deserved to be viewed equally in the eyes of the law. Now, the Supreme Court will take on the issue. Jeff zelleny reporting in tonight, jeff . The Supreme Court will now decide one of the biggest civil rights questions of our time. Whether states can ban samesex marriage. The bottom line is this. If the justices find the state bans unconstitutional, its can make gay marriage the law of the land. Most say it seems likely but its far from certain. And a decision expected by late june. David. Jeff, thank you. And now to that the man hunt under way across the south. A couple dubbed a modern day bonnie and clyde. A teenage girl and her boyfriend. A string of alleged crimes, stolen cars and in a car with weapons crossing state lines, according to authorities. Here is steve osunsami. Reporter tonight, Police Believe that these two teenage couple on the run from the law, are getting desperate as they run out of cash, spotted by security cameras and witnesses in at least four states. Cheyenne phillips is only 13 years old and in the eighth grade. Her boyfriend dalton hayes is 18. Police say they left their homes in kentucky in a stolen truck and then ran from the sheriff through kentucky farmland. The last vehicle that they stole did have two handguns in it and we know that they probably know theyre in there and certainly that raises the level of alert for any officer that may encounter them. And any sifrl civilian that may approach them either. Reporter this all started because their parents didnt approve of their relationship. Saying they left home january 4th, stole this truck and crashed in it woods a week later and then stole this red tacoma. They were seen in this Surveillance Video monday, nearly 600 miles away, allegedly cashing stolen checks at this walmart in south carolina. Daltons mother said they were dating for three months. He told me he loved her. He actually bought her an engagement ring. Reporter police found the say ban donned tacoma 250 miles away in henry county, georgia. They get into more trouble the more they run. Because hes a teen and shes a minor, he could face kidnapping charges. David . Steve, thank you. We return to the weather, a brutal week of cold. The time lapse of chicago river, the blocks of ice building by the hour until you can see there, its completely frozen over. And look at this, the northeast, the midwest, covered in white. And now the big thaw on the way. Abcs senior meteorologist rob marciano with us. A lot of people watching at home saying, its about time. And so much needed for some folks. Take a look. Chicago, certainly, and minneapolis, january thaw. Although brief, they have been near the 0 degree mark. For much of the month. Above freezing tomorrow. And another storm for the Pacific Northwest and sunday afternoon, six inches of rainfall potentially. Showers lingering for the big game in seattle. And on the east coast, a coastal storm that is going to develop. And rain and snow as well. But mostly rain. And rain and wind increasing in foxborough. Predicting for the super bowl in arizona much nicer weather. You are not going to go on the line, the patriots or the colts. Thanks. Now to the surprise resignation this hour. The head of med medicaid, mayor lynn tavnor announcing she will step down next month. She became a lightning rod overseeing the obama care website. And tonight, abc news investigation. Ambulances charging a lot of money, taxpayer money, when they are not needed. Would you believe, patients stopping in the ambulance for take out . David kerley reports its your money. Reporter ambulances can save your life. But these are stealing your tax dollars. Watch this undercover video as passengers, patients climb into the front seat of an ambulance. They are medicare beneficiaries, taken to a doctors appointment. It should be a 20 cab ride. Instead, crooked Ambulance Companies pick up patients, charging taxpayers 400 bucks a roundtrip. It sounds like a pretty easy fraud. It is. It is easy fraud. Reporter we went on patrol with federal agents in philadelphia suburbs. Here there are more Ambulance Companies than taxi companies. We have had some bad guys in here. Trolling for customers at medical facilities like dialysis centers. An ambulance is approved for medical needs. For example a patient who cant walk, climbing into the front seat. Not shocking enough . How about an ambulance stopping so a patient can get take out food. And fraudsters, these are criminals, making a lot of money on the tax payer. Bank robbers go to a bank to steal money because there is money there. Medicare is an over 600 billion program. Its where the money is. Reporter we went to ask the man in charge of stopping Medicare Fraud why these ambulances have not been stopped. You take some responsibility for the fact that tax dollars are being stolen . Of course. Reporter every year, 350 million in the Ambulance Program is lost or ripped off. Stolen by somebody, thats a lot of money. We know its an area of abuse that in some ways outstrips other areas. And we are working as quickly as we can to get it behind us. Reporter medicare says it is making progress on these fraudsters. Still, some ambulances are being used as glorified taxis and its your money. David kerley, abc news, washington. David kerley, thanks to you. And tonight, believe it or not, the race to 2016 coming in clearer focus. A familiar name speaking this evening. Heres the question. Will he run for a third time . And what president obama had to say about it with jonathan karl. Reporter tonight, speaking on this aircraft kafr carrier in san diego, mitt romney will try to convince Republican Leaders he should run for president again. And that has the guy who beat him last time smiling. Mr. President , id really like to hear your reaction to the news that mitt romney is thinking about running for president again. On your last question, i have no comment. Reporter as romney makes his case, we saw three signs this week that Chris Christie is already campaigning. First travel. Iowa today. South carolina wednesday. Both key primary states. Second he says hes not concerned about other big names ready to jump in. What ive told everybody, supporters of mine, potential donors of mine, staff is relax. Reporter finally, his annual state of the state message sounded a lot like a National Campaign speech. We need to renew the spirit and the hopes of our state, our country and our people. Reporter and david, i have talked to several people who have heard directly from romney on this. And they tell me, they are convinced he is absolutely serious about running. Very serious about running. In the meantime, jon, there are headlines about Hillary Clinton this week. Yeah, this is interesting. Clinton has reached out to two veterans of the Obama Campaign to run her likely company. These are two people who beat her eight years ago, and a real indication she wants to run a very different campaign. Perhaps borrowing the playbook. Jon karl tonight, thanks. Reclaimed the titles, more wins tonight, joe paterno has reclaimed the titles, more wins than any Major College football coach in history. Penn state football had been stripped of 112 wins as a result of the Jerry Sandusky sexual abuse scandal. Tonight those wins reinstated. And 65,000 in fines paid bid penn state will be reallocated to help victims of sexual abuse. There is still much more ahead on world news tonight this friday. The hospital imposter caught on tape. Roaming the halls for weeks. Authorities say wearing his lab coat, a stethoscope and tonight the real doctor who noticed something was wrong. And watch this, the malfunction caught on tape tonight. The set back in the effort to get america back in space. And our person of the week tonight, actress Julianne Moore on her many roles, her life, and who she is standing up for tonight. The silent struggle in america is coming up. I am his guardian. I am his voice. So i asked about adding oncedaily namenda xr® to his Current Treatment for moderate to severe alzheimers. It works differently. When added to another alzheimers treatment, like aricept® it may improve overall function. And cognition. And may slow the worsening of symptoms for a while. man namenda xr doesnt change how the disease progresses. It shouldnt be taken by anyone allergic to memantine, or whos had a bad reaction to namenda xr or its ingredients. Before starting treatment, tell their doctor if they have, or ever had a seizure disorder difficulty passing urine, liver, kidney, or bladder problems, and about medications theyre taking. Certain medications, changes in diet, or medical conditions may affect the amount of namenda xr in the body. And may increase side effects. The most common side effects. Are headache, diarrhea and dizziness. woman all my life, hes protected me. Now i am giving back. Ask their doctor about adding. Oncedaily namenda xr. I have a cold with terrible chest congestion. I better take something. Theraflu severe cold doesnt treat chest congestion. Really . New alkaseltzer plus day powder rushes relief to your worst cold symptoms plus chest congestion. [breath of relief] oh, what a relief it is. [ hoof beats ] i wish. Please, please, please, please, please. [ male announcer ] the wish we wish above all. Is health. So we quit selling cigarettes in our cvs pharmacies. Expanded minuteclinic for walkin medical care. And created programs that encourage people to take their medications regularly. Introducing cvs health. A new purpose. A new promise. To help all those wishes come true. Cvs health. Because health is everything. We are going to turn next to the hospital imposter, police say he dressed the part for weeks, wearing a white coat and stethoscope as he walked the halls. He was not a real doctor. He was not old enough to vote. Here is matt gutman. Reporter at st. Marrys hospital, he was dressed in a white lab coat. Dr. Sebastian kent met the 17yearold last week. They told me he was a doctor. His name was dr. Robinson. Reporter police say Surveillance Video shows him roaming in the hospital pretending to be a doctor. But he never treated any patients. Police say the day he got caught, he was there with a family member. He said, dr. Kent, i would like to follow you. Reporter that was a figure that he was a fraud. His story fell apart and 30 minutes later, he was arrested right here. Reminiscent to the teenager played by leonardo dicaprio, in catch me if you can. Also impersonated a doctor. Do you concur. Reporter and another 17yearold masquerading. As a medical professional in 2011 wearing scrubs and a lab coat. Telling police he even treated patients. He was found guilty of impersonating a physicians assistant. And practicing medicine without a license. And the boy was not charged with a crime. He was released back to his mother who says he was not taking his medication and is under the care of a real doctor. Matt gutman, abc news. When we come back here, Julianne Moore. And word coming in, the missing robot discovered on mars tonight. And the explosive crash landing caught on tape. The set back to americas return to space. What happened here . If you ever dropped your iphone, the smart phone. The ultimate test. 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