Forces well wipe them out. Since this summer, isil has not had a single successful major offensive operation on the ground in either syria or iraq. In recent weeks, weve destroyed hundreds of their tanker trucks, wells, and refineries. And were going to keep on hammering those. Isil also continues to lose territory in iraq. Isil had already lost across kircut province and in tikrit and more recently, isil lost at sinjar, losing a sategic highway. Isil lost t baiji with its oil refinery. We saw during the daring raid supported by our special forces, which rescued dozens of prisoners from il, which Master SergeantJoshua Wheeler made the ultimate sacrifice. So far isil has lost about 40 of the Populated Areas it more. Aqi forces are now f fhting deeper into ramadi and working to circle fallujah and cut off supply routes into mosul. Mr. Obama said he is accelerating the war in syria and iraq after isis bombed a russian jetliner, directed the attack in paris and inspired another in san bernardino. Tonight we have a rare look at what u. S. Forces are facing. Charlie dagata linked up with americas kurdish allies. His story begins in iraq. Reporter even when colonel badal bandi told us his forces face isis attacks every day, we didnt expect this would be one of them, until he showed us where three suicide car bombers tried to charge theieioutpost at dawn. His soldiers shot the drivers dead before they detonated their bombs, but the car bombs remained no more than 50 yards [ explosion ] here on the front line, the bomb squad is a. 50caliber gunner. The first went up in a plume of smoke. He then opened up on the car in the ditch, the one much closer to us. We watched until he finally made a direct hit. [ explosion ] the massive explosion blew shrapnel in every direction and filled the bunker with choking dust. That noise is debris from the bomb and wreckage from the car that came crashing down. Everybodys ears were ringing, but no one was hurt. Hours later, we crossed into syria where rebel commander colonel Talal Ali Selo gave us a grim picture of just how many Suicide Missions theyve seen. Can n u give me an idea, how past month . 42 car and truck bombers, he said, three on motorcycles and foururuicide bombers on foot. This week three car bombs killed 28 people. The colonel told us the town had ruout of sugar, so to get past checkpoints, isis hid the bombs in trucks delivering sugar. You went to the funeral today. What are people there telling you . They want revenge for the dead, he told us, and they want us to make sure this doesnt happen again. The colonel told us although they stotoed most attacks, scott, its hard to stop them all because isis is constantly changing tactics. They never know when theyre going to strike, and they seem to have an unlimited supply of suicide bombers. Charlie dagata on the battlefield, thanks. Theres also apparently an unlimited supply of followers coming to the west. Reviewing how immigrants are screened. One of the terrorists who killed 14 in california wrote online two years ago of her desire for jihad. Th she got an americananisa. Jeff pegues has more. Reporter when Tashfeen Malik applied for a fiance visa in 2014, she had her name and face checked against terror watch lists, b b whether she posted radical views on social media was not checked. Alberto fernandez until recently ran the state Departments Program to counter isis online. Nowadays every company that hires is looking through your social media. Yes. Reporter should the government be doing more . This is the crazy thing about this debate. You would think thatateople who are trying to come to the United States to live in the United States, a privilege that most tually have that scrutiny. Reporter the department of Homeland Security says it began three pilot programs in 2014 to examine whether screening social media was consistent with current laws and privacy protections. Today government officials dismissed allegations Homeland Security secretary jeh johnson delayed the implementation of nenerules because of Public Relations concerns. A review of the policy is under way. Since the attack, some Members Congress have been demanding chges to the visa screening system. Neneyork senator charles schumer. And had they checked out Tashfeen Malik a little more, maybe she wouldnt have gotten a visa. Reporter even one of the countrys largest muslim orgagazations is not against increased social media scrutiny. Ibrahim cooper is with the council on American Islamic relations. Measures that target only one faith group, only one ethnic group or people from a Certain National origin, that raises nations security. Reporter last year there were mor than 460,000 visas issued. Scott, there a a concerns that addingng layer of social media scrutiny could delay the process, hurting tourism and business. Jeff pegues in washington. Jeff, thanks. The cbs overnight news will be right back. Almost sixty milliononmericans are affected by mental illness. Together we can help them with three simple words. My name is chris noth and i will listen. From maine to maui, thousands of High School Students across the country are getting in on the action by volunteering in their communities. Chris young action teams of High School Students are joining volunteers of america and Major League Baseball players to help train and inspire the xt generation of volunteers. Carlos pea its easy to start an actioioteam at your school if you were a hippie in the 60s, you need to know. Its the dawning of the age of aquarius. Yeah, and Something Else thats cool. What . Osteoporosis is preventable. All osteos preventable . Right on you dig your bones, protect them. All cbs cares today, Donald Trumps physician said the republican candidate would be, and this is a quote, the hethiest individual ever elected to the presidency. He called trumps Blood Pressure of 110 65 astonishingly excellent, but even that trumpian hyperbole couldnt help with other numbers today that arent so healthy. Seven weeks before the caucuses, trump trails ted cruz in iowa by heres major garrett. Ere doing really well. Iowas been amazing. Reporter donald trump is no longer winning in iowa. The Des Moines RegisterBloomberg Politics poll is one of two in the last week to show ted cruz on top. The third poll out today has trump and cruz tied. Faced with adversity, trump is now attacking cruz i dont think he has the right temperament. I donnthink hes got the right judgment. Reporter trump mocked cruzs frequent clashes with gop leaders, most memorably when he triggered the 2013 Government Shutdown in a futile attempt to end obamacare. E. You look at the way hes dealt with the senate, where he goes in there like, frankly like a little bit of a maniac. Youre never going to get things done that way. Reporter cruz consnsers the shutdown a demonstration of conservative zeal among gop establishment timidity, but cruz, ever wary of aggravating the point. Instead he posted this throwback video of the movie flashdance, dedicated, cruz said, to maniacs everywhere. Trump and cruzs battle in iowa has come at the expense of former leader ben carson. He told an iowa radio show hes fallen behind as terrorism has become a top campaign issue. Reporter tomorrow nights prime time debate will give carson a chance to turn the tide on foreign policy. Marco rubio, whose november rise in the polls, has suddenly stalled, is also in need of fresh momentum. Scott, rubio is still best positioned as the republican alternative should voters want one, to trump, cruruand carson. Major garrett not in venice major, thanks very much. Today the army said that Bowe Bergdahl will be courttrtialed for desertioio and endangering his fellow troops. Bergdahl was a taliban prisoner for five years after he walked away from his post in afghanistan. He was swapped lt year for five prisoners at guantanamo. An army hearing officer had recommended no jail time, but bergdahl now, if convicted, could face up to life in prison. It was three years ago today that a gunman opened fire at Sandy Hook Elementary School in newtown, c cnecticut, killing 2020 first graders and six adults. Vice President Biden tweeted, since that nightmare, an estimated 555 children have been killed by guns in america. It is shameful that congress has not acted. As the nation continues to Mental Health care, newtown parents are reminding us of the urgency. And heres michelle miller. We gather here in memory of 20 beautiful children. Reporter when the numbers became n nes charlotte, daniel. Reporter and the names became faces, suddenly they were americas children. 20 first graders gunned down in their classrooms along with their teachers. Its always 12 14. It is always the last day that they went to school. Thats never going to change. Reporter but something had to change for nicole hockly, who lost her sixyearold son dylan. This is about not accepting this. We cant just passively sit back and say, these shootings happen. Reporter together with other newtown parents, she helped found sandy hook promise, a group working to prevent gun viwlence. I can still feel him. I can hear his little voice. Reporter mark barden also lost his sixyearold son daniel. In almost every one of these Mass Shootings, there are signs and signals. There are opportunities to inteteene to stop that cononnuum before it leads to tragedy. Reporter together they travel the country teaching others how to respond to those signs. They call it the sayayomething campmpgn. If you see someone at risk, say something. That training worked recently in cincinnati when a student reported someone plotting an attack. The whole thing was stopped and diffused. Reporter did the hairs. Oh, yeah. I burst into tears. It was overwhelming. To actually know we potentially saved lives, that means something. Reporter and so does sweeping Gun Legislation they helped pass in connecticut two years ago. Itxpands the ban on assault weapons and limits the number of rounds per magazine. Setbacks. With the defeat of a bill two years ago that would have closed loopholes in background checks for gun buyers. A loloof people say, if it didnt happen with newtown, when will it happen . It is happening. Sandy hook was ththstart. It was a catalyst for change. Its too late for us, but theres a lot of other positive change for this cotry that will come. Reporter change that will keep a promise to the children of sandy hook. Michelle miller, cbs news, new york. We have been bringing you a variety of opinions on how to curb gun violence, from gun rights to gun control. Tonight we continue our series, voices against violence. Im tom farley, the former Health Commissioner for new yorkrk city, and now the chief executive officer for an good projects. Let me put the problem of gun violence into perspective. Think of the most horrific Mass Shootings in american history. Newtown, 26 peopop killed, virginia tech, 32 people killed, and we lose that many people to gun violence every day in america. On an average day in america, 31 people are killed with gun homicides, and 58 people shoot themselves with guns. This isnt just a Law Enforcement problem, its a Public Health problem. Homicides and suicides are the numbertwo and numberthree causes of death in young people and teenagers in america today. Those people arent being killed with viruses. Theyre being killed for the most part by bullets. The gun is, afafr all a machine, a mechanical object that causes injuries, like a car, and car crash deaths in this country have dropped by more than half since 1980 by a Public Health approach with safer highways and safer car design. We can take a Public Health approach to design safer guns and put in other Public Health policies to reduce gun deaths, as well. Process for background checks. You can undergo a more thorough vetting of you want to adopt a cat from a shelter than to get a gun. If you can reduce the number of guns in america, we can prevent an awful lot of those shootings. Former new york city Health Commissioner tom farley. If a drone is on your shopopng list, theres somomhing you need to do before it takes off. The cbs overnight its the Little Things in life that make me smile. Spending the day with my niece. I dont use super poligrip for hold, because my dentures fit well. Before those little pieces would get ininetween my dentures and my gum and it was uncomfortable. 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Downy fabric conditioner give us a week, and well change your bed forever. Want more freshness . Add new downy fresh protect. Theres moving. And theres moving with move free ultra. It has tripleaction support for your joints, cartilage and bones. And unlike the big osobi flex pills, its all in one tiny pill. Move free ultra. Lets get these dayquil liquid gels and go. But these liquid gels are new. Mucinex fast max. Its the same difference. This one is max strength and fights mucus. Mucinex fast max. The only cold and flu liquid gel thats maxstrength and fights mucus. The skies are getting crowded with drones. So today, the federal government said theyll have to be registered. Transportation correspondent kris van cleave shows us how that will work. Reporter when the faa registration website goes live next m mday, current drone owners will have two months to register. Newly purchased devices will have to be registered before taking flight. I think this does add a level of seriousness to the operation the drone. Reporter former faa assistant administrator scott brenner. Do they need to have a Drone Registration Program . I think the faa was struggling with how do we educate new users, and by creating this registry, now we have a direct link to every user, which will allow us to do a tremendous amount of education. Reporter the faa hopes that education will prevent more clcle calls in the air. A new report identified 158 incidents in the last two years where a drone came within 200 feet of another aircraft. Evasive maneuvers. There has never been a confirmed collision between a drone and another aircraft. The new Registration System will require drone owners to give their name, Mailing Address and email and pay a 5 fee. I think its going to create a deterrent. I think some will not want to pay that fee. Reporter lawyer Michael Drobac works with the drone industry, which has been supportive of a Registration System. Does having the Registration System make the skies safer, do you think . Do i think those who would act in an inappropriate manner, do i think they will register . Probably not. Reporter the faa will waive that 5 fee for the first 30 days. Scott, all operators will be given an Identification Number that has to be displayed on their drones. Kris van cleave, thanks very much. Still ahead, the bully poultry. Swiftly and carry a big stick. Today, bill cosby filed suit against seven of the women who have accused him of sexual misconduct. They are suing him claiming he defamed them by trying to brand them as liars. In his countersuit, he says they are trying to a aassinate his reputation. More trouble today for americans who make a living in the oil \atch. Shell says it will cut 2,800 more jobs. Shells total for the year comes to 10,000 layoffs. Oil closed today at 36 a barrel, down nearly 25 since may. 18 months ago in t t summer of 2014, it was 105, nearly three times higher. Stocks closed higher. The dow gained 103 points. On cape cod its not foul weather that staysyshis courier from the swift completion of his in turkeys. The letter carrier carries a pole to keep the birds at bay. Not clear why they follow him. Perhaps theyeye looking for mail companionship. Were not looking for a stamp of approval on that last line. After the diplomatic breakthrou, the sounds of havana are playing in chicagag and that story is next. Woman what does it feel like when a woman is having a heart attack . Chest pain, like theres a ton of weight on your chest. Severe shortness of breath. Unexplained nausea. Cold sweats. Ththes an unusual tiredness and fatigue. Theres unfamiliar dizziness or lightheadedness. Unusual pain in your back, neck, jaw, one or both arms, even your upper stomach, are signs youre havingg a heart attack. Dont make excuses. Make the call to 911 immediately. Learn more at wo