Nightly news begins now. Good evening. Tonight, we begin with a nation increasingly on edge as details slowly emerge about the San Bernardino shooters and the weapons they used to carry out their vicious attack. In an online radio broadcast today isis praises the two shooters and this comes as the president is ramping up his language saying the act was an act of terror. We have it all covered and we begin in redland, california. Reporter in this Bedroom Community outside los angeles, neighbors tell nbc news siyed farook and tashfeen malick appeared normal. Today the group isis praised the attack, calling the couple martyrs, but theres no evidence that the attack was directed by a militant group. Malik was born in pakista pakistan. She spent time in the Punjab Province in her early years and later went to university there which was a hotbed for recruiting. There was no signs she was involved with radical islamic groups. Some say u. S. Officials are right to ask if she radicalized her husband. I think Tashfeen Malik selected a clean candidate to be her cohort in terrorism. In duos, we have a primary actor who manipulates a more vulnerable subservient person. Reporter malik married farook after meeting in saudi arabia. He was born in chicago. A College Graduate with a good paying job as a restaurant inspector in San Bernardino. Friends say there was no way he was the master mind. This is something political because this brother, he couldnt have done that. Reporter the shooters home where they raised a 6monthold daughter was a bomb making factory. Killed by police in the shootout, their deadly plot ending in the hands of er doctors. This is something ill never forget. Ill never be able to fully conceive how those patients families were affected. Reporter the 14 dead are mothers fathmothers, fathers, sons, and daughters. Johnson shielded her saying three words, i got you. Tonight, her life a tribute to his in a massacre where there are still so many questions. They knew very little about the couple. Thank you for that report. President obama met with his National Security team today for a briefing on the shooting investigation. Officials say theres no solid evidence tying this attack to any specific terror group. Our justice correspondent Pete Williams is following this angle. Pete, good evening. Kristin, good evening. The white house says the president was told today they found no indication that the couple was part of an organized group or terror cell. James comey says several factors suggest they were radicalized. Among them their extensive preparations, the way they built their bombs, and the pledge of support for isis that malik posted before the shooting. No sign at this point that the couple was in direct contact with anyone from any terror group. Investigators hope theyll discover the couples motives on the computers and cell phones they left behind, but the couple damaged those devices before the shooting. While the lab at washington is working overtime to recover that data, that work is slow going. Pete williams from our washington newsroom. Thank you, pete. We are learning more tonight about the four guns used in the massacre and where they came from. It turns out two of those guns, the assault rifles, were purchased by a friend of syed farook. Reporter the attack on the Holiday Party didnt take long. Roughly 75 rounds in just a matter of minutes. Overnight, Law Enforcement searched a house belonging to a friend of syed farook who they believe originally purchased the two assault rifles during the rampage. One bought in 2011 and the other in 2012. Authorities say they do not consider him a suspect in the mass shooting, but they want to know when the guns were transferred to the couple. Its an urban tactical weapon. Reporter the ar15s have been used in some of the deadliest shootings in history. 2012 in aurora, colorado, james holmes used it to kill 12 people at a late night movie. Less than six months later, adam lanza used a rifle called the bushmaster to kill 20 children and 6 adults at sandy hook elementary. Assault rifles like these are relatively light and easy to use. Could i potentially learn how to use this gun in an afternoon . You can potentially learn how to use this gun in two minutes. Reporter the couple tried to alter one rifle to make it fully automatic, but their attempts failed. The law in the state of california says a magazine can only hold ten rounds, but the shooters had magazines that could hold 30 and they had them taped together. When magazine finished, all they needed to do was flip it and use the next one. Federal investigators took security video and financial records from this gun range. The couple may not have needed much practice. Law enforcement officials tell nbc news the man who originally bought the gun has not been able to tell them how or when they ended up in the couples hands. They say hes been too emotionally distraught to give them that level of detail. Just a fascinating look at assault rifles. We have a program note now. Chuck todd will have much more on the San Bernardino shootings tomorrow on meet the press. As we told you earlier, president obama spoke out again today about this weeks shootings and so did some of the president ial candidates. The massacre is having a pronounced impact on the rhetoric of the campaign with new warnings by the candidate about the terror threat. Among those weighing in today was donald trump. We were with him today in iowa. Reporter addressing the tragedy in San Bernardino today, president obama came as close as hes ever come to using the wor words radical islamic terror. The president cautioning we need to know all the facts before laying the blame on Global Terror Networks was panned by the republican hopefuls, who accused him of backing away from an all out assault on isis. Radical islamic terrorists, its what it is. This is a war. Were in a war. Reporter his poll numbers rising, donald trump is leading the way, positioning himself as the toughest on terror. This [ bleep ] is not going to happen anymore. Reporter the billionaire arguing for racial profiling and bringing back waterboarding. Trump even taking it a step further to target the families of suspected terrorists. The heated rhetoric not exclusive to the frontrunner. Were seeing the evil of radical islamic terrorism here at home, murdering innocent people. This is the world we now live in. He was born in the united states. He was a u. S. Citizen. Reporter Republican Voters say they are afraid and as of now the man most say they want protected them is donald trump. Youre not going to be scared anymore. Theyre going to be scared. Youre not going to be scared. Reporter Republican Voters say regardless of who theyre going to vote for they do believe donald trump is the most qualified candidate when it comes to Foreign Policy and isis despite his inexperience. One more note on all of this. For the First Time Since 1920, the New York Times ran an editorial today. It calls for greater regulation of guns in this country following the string of recent mass shootings. A bystander recorded the confrontati confrontation. We want to warn you i know there are videos out there in the media. If you slow those videos down carefully, you will see that the weapon is raised at the moment in which the shot takes place. Reporter while the fbi is investigating the attempted bank robbery, the shooting in the city of miami beach is being investigated by separate police agents. Its a new policy here. At outgrowth of the 2011 shooting. Once the independent investigation is completed, it will sent to the miamidade state attorney, who will make the financial decisi final decision. And there is a new chapter tonight in that Controversial Police shooting of a teenager in chicago more than a year ago. Youll recall the Police Released dash cam video of the shooting just last week. Then they released surveillance tape from a burger king with an 80minute gap. Now they have released seemingly contradictory Police Reports from the officers who watched the shooting. Reporter in hundreds of pages of official and handwritten police statements a startling different picture of the shooting that took the life of 17yearold laquan mcdonald. In Police Reports released by the state late friday officer jason van dyke, who has been charged with firstdegree murder, and five other officers seemed to directly contradict the dash cam video last week. When mcdonalds got to within 12 to 15 feet of the officers, he swung the knife toward the officers in an aggressive manner. The officers are called the victims. The 17yearold the offender. While the video shows the teen lying on the ground shot 16 times, officers reported mcdonald continued moving on the ground, attempting to get up while still armed with the knife. The report also introduces a possible defense for van dyke, who has pleaded not guilty. A previously issued Chicago PoliceDepartment Bulletin warning of a weapon, which was a knife, but which actually was capable of firing a bullet. Today, there were new calls for protest and resignations following the ousted summ eed superintendent garry mccarthy. Reporter chicago pd says the Justice Department is now investigating the officers who made those statements in a tale of two stories that has left a city divided. And when nightly news continues on this saturday, Womens Health and what has emerged as a new risk factor for Breast Cancer. A most unusual living arrange song thats life song thats life song thats life song thats life thats life. You diet. You exercise. And if you still need help lowering your blood sugar. This is jardiance. Along with diet and exercise, jardiance works around the clock to lower blood sugar in adults with type 2 diabetes. It works by helping your body to get rid of some of the sugar it doesnt need through urination. This can help you lower blood sugar and a1c. And although its not for weight loss or lowering systolic Blood Pressure, jardiance could help with both. Jardiance can cause serious side effects including dehydration. This may cause you to feel dizzy, faint or lightheaded, or weak upon standing. Other side effects are genital yeast infections, urinary tract infections, changes in urination, kidney problems, and increased bad cholesterol. 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Well, there is biotene, specially formulated with moisturizers and lubricants. Biotene can provide soothing relief and it helps keep your mouth healthy too. Biotene, for people who suffer from a dry mouth. Were back now with an Important Health story that came out just this week. A new warning sign for Breast Cancer that doctors say should now be added to the list of risk factors for the disease. It involves a preliminary finding on some mammograms. Reporter a trainer wasnt overly concerned when a mammogram several years back detected something suspicious. It turned out to be whats known as a false positive. An additional screening found she was cancer free, but three years later there was nothing false about it. Her yearly test revealed the mom had stage 2 Breast Cancer. Whats it like when you get that diagnosis . Its very scary. I have a little boy. And i want to see him grow up and get married. Reporter women receiving them had a higher chance of eventually developing Breast Cancer than those who didnt. The study followed a million women for over a decade. Women a previous falsepositive had a 39 greater risk of Breast Cancer later on than women who never had such a finding. Those who had a biopsy that turned out to be negative had an 69 risk. The chances of a woman developing Breast Cancer overall are very small, even if she has a false positive. Reporter some say false positives should be considered a risk factor. I was diagnosed two years ago. Reporter after diagnosis, claudia was treated at m. D. Anderson cancer center. Shes healthy now. Im very, very lucky it wasnt as bad and they discovered it at an earlier strategy. Reporter false alarm mammograms, a potential clue for Early Detection in the fight against Breast Cancer. And when we come back, could this be the dormitory of the future . Why these college future . Why these college Rheumatoid Arthritis like me. 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Plan well and enjoy life. Or, as we say at unitedhealthcare Insurance Company, go long. How you plan is up to you. Take healthcare. Make sure youre covered for more than what just medicare pays. Consider an aarp Medicare SupplementInsurance Plan insured by unitedhealthcare Insurance Company. The only Medicare Supplement plans that carry the aarp name, and the ones that millions of people trust year after year. Always have a plan. Plan well. Enjoy life. Go long. They say theres no place like home, and we have a unique twist on that concept tonight. For a group of College Students in cleveland, home has become a local retirement community. Reporter 25yearold Daniel Parvin has a lot on his mind these days as he finishes up his ph. D. At the Cleveland Institute of music, but one thing he doesnt worry about that i have the best Student Housing arrangement in cleveland. Reporter it is not just an apartment in a luxury hotel or the grand piano in the lounge. Its his housemates. I have 100 surrogate grandparents here and theyre really dear friends of mine. Reporter it is home to both students and senior, a novel arrangement combining college kids and retirees five years ago. She eats as much as my family. I see more of her than i do some of my adult grandkids. Reporter what could they possibly have in common . Turns out a lot. We enjoy cooking, sharing a meal, talking about art, talking about music. Reporter the students get free housing in exchange for performing once a month. Residents say these young neighbors keep them young. When you see a young person coming toward you, you want to look alive. You want to look like youre still part of it. I see them wearing something or carrying something. What the hell is that . Reporter no worries about loud parties oh, no. No. We actually can have those two. Reporter there is, however, one area of disagreement between the ages. Who do you think gets more out of it, the residents or you . I do. Reporter so far a dozen students from area colleges have come together to great this familylike atmosphere. It is a win for us because we have delightful young people here. Reporter two different generations living in harmony. That is a win all around. Up next, how a city shaken decided on this up next, how a city shaken decided on this day to march on. Look, up next, how a city shaken decided on this day to march on. The wolf was huffing and puffing. Like you do sometimes, grandpa . 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. So i talked to my doctor. She said. Symbicort could help you breathe better, starting within 5 minutes. Symbicort doesnt replace a rescue inhaler for sudden symptoms. Symbicort helps provide significant improvement of your lung function. Symbict is for copd, including chronic bronchitis and emphysema. It should not be taken more than twice a day. Symbicort contains formoterol. 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The city was also showing its resilience today while many are in mourning and many are feeling the sorrow of the city. The holiday spirit was also on display. Reporter it would have been easy for San Bernardino to call off this years ymca christmas parade, to silence the bands and pack away the costumes, to tell kids who practiced for months to stay home. Yes, that would have been easy, but this town needed something else. I think it needs a parade more than ever. A good blue collar town like San Bernardino is going to stand up and fight. Reporter about 1500 people, mostly kids, are marching in the parade. Organizers questioned whether to cancel it, but decided last night to go forward. As a precaution, they doubled the police presence. Peace of mind for many like patty cruz. Its really sad right now. Reporter her granddaughter works at the inland regional center. The scene of wednesdays mass shooting. She made it out okay. Reporter still what happened paralyzed this community. What do you think it will take to get life back to normal here . Time. I think just time. No matter what life goes on and you cannot be afraid to live your life. Reporter San Bernardino is slowly starting to heal and for patty cruzs family, today is part of that process. This is for them. We need to bring them out and let them know were going to be okay. Reporter a wounded yet resilient town fighting fear with joy. Incredible resilien resilience. That is nightly news for this saturday. For all of us here at nbc news, thanks for watching and good night. Jay gruden, joe barry. Hi, everybody and welcome to the redskins coaches show with jay gruden presented by harris teeter. This is coach jay gruden of course and that is chris cooley. Coming up on the show tonight the redskins host the cowboys on monday night football, we will take a detailed look at the game, chris and the coach with the video breakdown. Monday night football, your team has won five straight at home. How did you practice this week . Is this team ready . This is a huge game for you guys. Its a big game. The team i