Husband and wife, and this home, neighbors of one of the terrorists reporting they saw him. Heres cecelia vega,. Reporter onight, the investigation turning to this home, and enrique marquez, suspected of providing the guns used in the massacre. Did he provide the guns to farook . Reporter Authorities Say theres no information that marquez played any role in the shooting. He has reportedly checked himself into a Mental Health facility. All their children, theyre good kids. Reporter whats the biggest difference . His dress, beard, more withdrawn, started wearing his white thing, the long, draped out outfit, whatever it is. Reporter but n nody said they noticed any warning signs of the terror to come. Tonight, this new photo of farook and his family. His brother and sister are angry for not knowing they were living a double life. Do you feel like you didnt know your brother . I feel like he had a double life, very good at concealing reporter his father saying he shared ideology with the isis leader. And his brother and sister saying theyre in complete shock. They went to his house, never saw anything suspicious. And tonight say theyre grieving for all of the people that died right here behind me. Cecilia, thank you. And tonight, the fbi is on the hunt for any links the attackerer may have had to jihadi recruiters or known terror groups. And this plot appears to be the kind of homeground terror the agency has long feared. Heres pierre thomas. Reporter tonight, hundreds of fbi agents here at home and across the globe are in a race against time to uncover exactly what and who was behind the massacre in san bernardino. Fbi officials are searching computers and cell phones associated with the killer couple in a desperate attempt to see if they were radicalaled or directed by isis or other terrorists. Swore allegiance to the leader of isis on facebook on the day of the assault. The most important part of this investigation right now is, are they lone players, the two of them, or are they connected to other people . Reporter but if this couple was truly inspired by isis, it marks a dangerous evolution in the u. S. Terror threat. The fbi director has been warning for months about an unprecedented social Media Campaign by isis e eouraging poteteially thousands of followers in t t u. S. To attack. Its as if there is a devil sitting on their shoulder saying, kill, kill, kill, kill reporter the social Media Marketing polished, not just violent, appealing to the young. Theres evidence the Marketing Campaign is working. In the last two years alone, the fbi has identified or arrested nearly 90 suspected isis supporters from inside the united states. Average age, only 25. 13 females. And 15 of f ose arrested accused of trying to launch murderous plots here at home. The nation narrowly averted the first isisinspired massacre in may when two men armed with assault rifles tried to attack a texas cartoon conference about the prophet mohammed. And now this young suburban couple who left behind a 6monthold baby and went on a vicious killing spree. Law enforcement is struggling to cope with the newsis social dia reat. Tom . And president obama will speak to the nation tonight, comeing after he and his National Security team held a rare weekend immediatemeeting on the sander and the president wants to reassure people hes taking the reat seriously. Hes goingo give an update on the Sander Bernardino investigation. And he give a look at what the government is doing to target the threat of homegrown extremists like in california. And he will talk about actions he will say needs to be done on visas, guns, and other issues. But if youre looking for a wholesale change in strategy, thats not what the president will offer tonight. This is an intensification of whats already being done. And hell be speaking from the oval office. And theres a reason for the rare setting for the president. And its only the third time speech from the oval office. Right now, the usual place is filled with christmas decorations. Thank you. And the president s address begins at 8 00 p. M. Eastern, right here on abc. And terror is fueling the president ial debate. And Hillary Clinton parting ways with the white house, saying america is not winning the battle. Trump saying some americans should be closely monitored. And cruz rising in the polls with ann aggressive position. Were not winning, but its too soon to say if were doing everything we need to do. Reporter trump and clinton and heres clinton on this week. Whats the problem with radical islam . The problem is, that sounds like were declareing war against a religion. You look at the names, whats happened, you tell me. Reporter trump is open to racial profiling. But clinton is not. Theyll use that as a tool to say, were at war against the u. S. Reporter when ted cruz suggested this wellll carpet bomb them into oblivion. Reporter clinton says he doesnt know how that will happen. Trump saying he will agree to a as for boots on the ground, trump said hes open to deploying american combat forces. Clinton said she would like to see more than 50 special forces on the ground. Thank you. And lets head overseas, an apparent lone wolf attacker stabbing two before being taken down by police. Jennifer eccleston reporting in from london tonight. Reporter cell phone video captures a terrifying scene. Tase him, tase him, tase him, tase him. Reporter a man with a knife lunging at police at a london stabbing two people. Police subduing him with a taser. Both survive but tonight Scotland Yard is calling the attack a terrorist incident. Might be a self starter, just self radicalized from material on the internet. Reporter media reports say the man shouted, this is for syria. One witness on the scene shouting this you aint no muslim, bro. Reporter the attack comes at time of high alert after a string of terror arrests and just days after parliament voted to launch air strikes against isis in syria. Opponents had feared that move could trigger lone wolf attacks across the homeland. Tonight, police are urging the people to remain calm but alert and vigilant. Calling the threat of terrorism here severe. Tom . Thank you. A shooting here at home beach. A suspected bank robber facin police with a straight rayzor. Heres marci gonzalez. Reporter tonight, investigators going frame by frame through this cell phone video and others shot by bystanders in miami beach as an attempted robbery suspect armed with a straightedge razor was shot and killed by police. I saw the guy fall down and everything. Reporter investigators havent said why one officer decided to use deadly force while another fired a stun gun. In this image you can see the filaments hitting the suspect just a moment before hes killed. A Police Officer on the street literally has a fraction of a second to make the determination whether deadly force is warranted. Reporter police identifying record of bank robbery. Officers confronted the man after he walked into a bank of america yesterday morning and allegedly handed this note to a teller demanding money claiming to have a bomb. Police say he then took off with no cash and ran into this nearby barber shop. Coming out grasping this barbers razor. Leading to the deadly confrontation. He did raise his hand with the straightedged razor in it and he was shot. Reporter investigators now going over these images, and video from at least one officers body cam. Looking into whether the shooting was justified. Marci gonzalez, abc news, new york. Next to the nations weather. The northwest, bracing for storms this week. Icy roads making travel difficult. Even closing i90 for part of the time. And storm after storm battering the region. Parts of oregon and washington could see a foot of rain by wednesday night. And some good news from former president jimmy carter four months after revealing he had cancer, now telling his church group hes cancerfree. He was treated with surgery, radiation, and a cuttingedge regime. Still ahead, the Great Holiday debate. Is it a holiday or christmas tree. Is christmas being disguised . And later, a scare in the air for morgan freeman. Causing his private jet to make those stories, coming up. Whatever youre doing, plan well and enjoy life. Or, as we say at unitedhealthcare insurance company, go long. Consider an aarp Medicare Supplement Insurance Plan insured by unitedhealthcare insurance company. Go long. This is claira. To prove to you that aleve is the better choice for her shes agreed to give it up. Thats today . Well be with her all day to see how it goes. After the deliveries, i was ok. 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Reporter tonight, a debate over christmas tradititis leaving many saying bah humbug. Or, in the case of one city councilwoman, i quit. At this time in our country and in our world, its important to be inclusive. Reporter new jerseys charlene storey resigning this week after the city Council Voted to change the name of the holiday Tree Lighting ceremony to a christmas Tree Lighting ceremony. Its not a holiday tree, its not a pear tree, its a christmas tree. Reporter that city councilwoman later reconsidered, deciding to stay on. But all across the country, christmas controversies are lighting up like trees. From the campaign trail if i become president , were all gonna be saying Merry Christmas again. That i can tell you. Reporter to campus. Some university of tennesseeknoxville students upset with a University Memo ensure your Holiday Party is not a Christmas Party in disguise. Its my godgiven right to be able to have a Christmas Party. Reporter to coffee shops. Starbucks stirring ire by removing christmas s sbols from theieiholiday cups. Yes, they got rid of the christian religious symbols like snowflakes and snowmen. Reporter still, some say there is something we can all agree on. 1the holidays are the holidays. We celebrate them, and its all good. When we come back, the final four of college football. Who made the list . And liftoff. Why this mission is so crucial to the crew on the International Space station. The index, up next. Its not every day something this big comes along. A chance to live longer nivolumab. Opdivo is the first and only immunotherapy fda approved based on a Clinical Trial demonstrating longer life. For these patients. In fact, opdivo significantly increased the chance of living longer versus chemotherapy. Opdivo is different. It works with your immune system. Opdivo can cause your immune system to attack normal organs and tissues in your body and affect how they work. 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Some extra pressure on this mission. Its the First Successful supply launch to the iss since a trio of failures over the past year. Now to a close call for Actor Morgan Freeman involving a crash landing. A tire blew on his private jet shortly after takeoff. The pilot started burning off fuel then made an Emergency Landing in mississippi. Saying, quote, we landed safely without a scratch. I cannot say the same about my plane. College football now. The playoff is set tonight. For the second year in a row, a committee secting the top four teams to play. Number one clemson will take on the fourthranked oklahoma in the orange bowl. Number two alabama will face off number three Michigan State in the cotton bowl. Eve. And tonight, a moment to remember someone we lost in our abc family. Former White House Correspondent bob clark, best known for his live reporting on the assassination of bototpresident kennnny and robert f. Kennnny, has passed away. Bob covered congressor many years and was a contributing host to the sunday program issues and answers. Bob clark died at the age of 93. Still ahead, a deep sea mystery solved. Why the location of this sunken treasure was kept a secret for coins, jewels, where did it all come from . Why its being called the holy grail of ship wrecks. Both erectile dysfunction and the urinary symptoms of bph, like needing to go frequently, day or night. Tell your doctor about all your medical conditions and medicines, and ask if your heart is healthy enough for sex. Do not take cialis if you take nitrates for chest pain, as it may cause an unsafe drop in bloopressure. Do not drink alcohol in excess. Side effects may include headache, upset stomach, delayed backache or muscle ache. To avoid longterm injury, get medical help right away for an erection lasting more than four hours. 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Jose, sank on june 8th, 1708, in the caribbean off the coast of cartagena, colombia. It was 150 feet long and armed with 64 guns. Estimates of the treasure on board, believed to include gold and coins like this one shown on the Facebook Papa for sea search armada, and silver vary widely. From an astonishing 4 billion to as much as 17 billion. It is a job of many years with many people, says a member of the team. A huge triumph. Dive teams have kept the exact location of the galleon secret, for obvious reason. It was found in 1,000 feet of water during what was very much a hightech treasure hunt. Tonight, what t thought to be one of the worlds most valuable shipwrecks is a secret no o re. Gma first thing in the morning, and david muir will be right back here tomorrow night. Im tom llamas in new york. For those of you celebrating tonight, happy hanukkah. Evening. Elisa 2 line cg elisa raffa eraffa kcautv. Co m a beautiful sunset downtown, but more clouds east where were seeing colder temperatures. 30s there, 40s for most. Tonight, clear skies but patchy fog will become an issue, getting down into the mid 20s. Gorgeous sunshine tomorrow, and much of the 7day. Thats next, but first heres deborah with your local news