Breaking now. The washington, d. C. Police chief says the overwhelming response to a shooting scare at the u. S. Navy yard here in washington shows the city is well prepared for anything that might happen. A 911 call led to a lockdown and raw fear as the nation is on alert for a possible terror attack around the july fourth Holiday Weekend. Tonight, were getting new information about security precautions here in the u. S. And around the world. Ill ask senator James Langford what hes 11ing. Hes the leading member of the Senate Homeland security and intelligence committees. And our correspondents and analysts are all standing by as we cover all the news breaking right now. First, lets get the very latest from our justice correspondent correspondent, pamela brown. Wolf the outpouring of Law Enforcement at the navy yard today reflects the sensitivity heading into the Holiday Weekend with the heightened terror threat. Combined with the fact that there had been a shooting there in the past. Within minutes of the first report of shots fired inside washingtons naval yard, parts of the Nations Capital were thrown into panic. The entire complex locked down as hundreds of police, s. W. A. T. Teams, and federal investigators swarmed the scene, blocking streets as helicopters covered overhead. Inside the same building where a gunman killed 12 two years ago, chaos. Someone came up on the floor yelling to get out of the Building Stay away from the cafeteria. Reporter for nearly three hours, police moved floor by floor through building 197, searching for a gunman clearing floors then leading stranded workers out with their hands up. Across town the white house blocked streets and canceled tours. At the capitol, enhanced security. By 10 15, police gave the allclear, later saying there was a lone 911 call reporting the sounds of gunshots. We take every event here in washington serious and our posture remains extremely high. Reporter while todays overwhelming response came in part because of the eerie similarity to the Navy Yard Shooting rampage two years ago, sources say it was also a result of fears throughout Law Enforcement. At the possibility of a july fourth terror attack coming after increased chatter of isis supporters online and calls by the terror group to strike in the west. Police in washington, new york, and other major cities say they are already increasing security around holiday events. This may be potentially the most complex counterterrorism overlay for this event ever. That is not driven by any information or particular threat as much as its driven by the unfolding of world events. So that was in new york. Back here in washington add is to todays heres is at the same time the navy yard was on Lockdown Police in new jersey were investigating a bomb during the time at a mosque. That turned out to be a hoax. At the time, with terror concerns Law Enforcement did not want to take any chances. Wolf . As they shouldnt. Pal lashes thank you. Lets bring in our justice reporter evan perez, he was there at the scene during that navy yard lockdown. What did you experience . Wolf the fear was panel panel palpable. Certainly building 197, which was the epicenter of todays scare, was is right next door to a very public area with supermarkets and restaurants. And thats where employees went today. They gathered there. You could see them a few of them were crying shaking, the fear was real. And also for Law Enforcement that responded and saw that terrible scene inside building 197 last time. They also were reacting to the same thing. The fear was real. And thank god it didnt turn out to be what they thought. Thats true thank god indeed. What are you hearing from your sources about all these terror alert warnings if you will that are going out in advance of this july fourth weekend . Wolf it definitely extends beyond just isis warnings and calls for attacks on social media. Were told by Law Enforcement officials that part of it is also that the fbi and intelligence agencies have been Monitoring Communications and other sources to look for what they think might be on the mind of some of these people. There are hundreds of isis supporters who are being watched and theres definitely talk about carrying out an attack if not now, sometime during ramadan, which continues by the way after july fourth and going further down the path towards the papal visit in september. They know theres talk of carrying something out. Securitys going to be intense in the United States for a while. The mud limb holy month of ramadan continues until around midjuly. Tonight new moves protecting american troops from a potential fourth of july terror attack. Our chief National Security correspondent jim sciuttos got details. This is another sign of the lowered risk tolerance. July fourth celebrations canceled at raf Royal Air Force in england. U. S. Commanders there say the decision was made due to the most current local threat assessments after a meeting of their threat working group. The announcement making it clear what the stakes are, in their view saying we must make difficult decisions like this when lives are on the line. Now, u. S. European command tells us this was a base decision specific to this base its not ukwide, but it does speak to the seriousness with which the u. S. Military is taking the terror threat, not just in the u. S. But overseas. Arguably the uk has a greater threat than the u. S. There are many more known jihadis there numbering in the thousands. Its a big deal when the u. S. Military does Something Like this even in one base at britain right now. Is it simply based on an abundance of caution . Or was there something specific that we know of that caused this commander to say, you know what the troops are not going to be able to participate in this july fourth celebration . Not something specific that we know of. They wont say that there was a credible or specific threat to that base. But it is interesting. You have a number of bases around the uk with u. S. Forces a number around europe and the threat level in europe is quite high now as well. Arguably higher than it is in the u. S. With the number of jihadis there, proximity to syria and iraq. But it was this specific base making this specific decision. Possibly they had an indication of something threatening them. But listen all base commanders make their own decisions. And this one base commander decided that the risk of having the event outweighed the benefits. Better to err on the side of caution, especially when were dealing with this kind of a threat. Thanks very much jim sciutto, for that. Lets talk about this july fourth terror threat. Joining us senator James Langford a republican of oklahoma a member of the Senate HomelandSecurity Committee and senate nelgd committee, thanks for joining us. What do you make of these developments . Are you more concerned potentially . Start with some sort of smallscale, lonewolf attack going after some socalled soft target . Or is your greater concern something more complex, a larger more coordinated terror attack that could kill potentially a whole lot more people . The greatest concern is actually the lone wolf. Its the individual that just decides to be inspired by isis what theyve done. Isis is very well outspoken about how much they hate our freedom, who we are as americans. July fourth is one of those natural dates, while were celebrating freedom, for them to find some way to poke us in the eye. Basically during that process, isis has not typically done a lot of coordinated attacks. What they did in egypt in the Sinai Peninsula is a novelty in some ways. Somewhat closer to what happened in garland, texas, to enspire an individual to be able to drive multiple states to be able to shoot and attack on a small scale. Thats the greater threat. Also harder to be able to track. The sinai, they killed about 30 egyptian soldiers in a wellplanned coordinated militarytype attack. Thats obviously very worrisome. Any specific threats i know youre well briefed. Are there any specific hard concrete threats out there, some plot that the u. S. For example, got wind of . No this is not about a specific threat this is just isis in general. We know they function on social media. When they try to inspire people theyre very different than al qaeda. Al qaeda likes to coordinate have a Central Command to be able to send out emissaries around that theyve highly trained. So say this is the moment were going to do a largescale attack. Isis is very different. Theyre reaching out on social media, telling people, its a holiday, we ought to kill people heres ideas how to do it heres places to be able to go. Heres our logo put the logo up tell them youre with us. Theyre not looking to send people theyre looking tone spire People Living in our midst. Theyre looking for the same radical jihaditype mindset and tell them, join us in the worldwide fight and engage. You see pockets of isis all over the world doing smallerscale events theyre trying tone spire the same thing. Theyve done it for several holidays theyve just been unsuccessful in trying to get it for several holidays. Things like are hike veterans day, memorial day, when they were trying to inspire. The people of oklahoma, the people im around were going to continue to go out to events be attentive to those things as we always are. This is isis trying to instill fear and thats not who we are as americans. Good advice is you see something, say something. Hopefully it will be a quiet, nice july fourth Holiday Weekend. What should the u. S. Be doing to about after those isis commanders who are leading their social Media Campaign to go out skin spire, if you will isis sympathizers to launch these kinds of terror strikes . We know the president is willing to order drone strikes to kill isis military commanders. What can the u. S. Do to downgrade or destroy that social media capability which clearly is very effective and inspiring isis supporters out there . Sure it is identifying those individuals, finding and locating those through social media. Its not always simple to do. Identifying those individuals that are actually inspiring this and to be able to engage. That takes great intelligence that takes a lot of work to make sure youre actually going after the right individual on this. Quite frankly, a lot of this is driven by the instability in syria as a whole. With bashir assad still leading syria, theres a tremendous number of individuals that would fight against isis but as long as isis is fighting assad, theyre going to leave isis alone and just continue to fight against assad. So while assad is still leading syria, they feel like isis is not a threat to them personally. Isis is a threat to assad, so theyre going to ignore it. We need individuals in all these different groups focused on taking out isis. Theyre a worldwide threat. But that also means that assad needs to be gone and have a transitional leadership in syria to help get that. We have much more to discuss, senator, including the heightened security at u. S. Military bases here in the United States and around the world. Much more with senator hanklankford when we come back. Senator james lank ford member of the Senate Homeland security and intelligence committees talking about the fourth of july terror threat. The unprecedented holiday security being put into place right now. Senator, we learned today that one of the isis leaders, a guy by the name of tariq al harzi, was killed in a Coalition Air strike he was known as the amir of suicide bombing, the state department had a 3 million bounty on his head. There are several individuals like him out there in the process that were identifying as we can identify their exact location what they do how theyre involved in the organization, trying to take some of those folks out. Youll remember about a month ago we had the actual oil minister for isis that we went in to do a special operations raid in syria to actually take the person out and to remove intelligence information from his home. So this is a part of the ongoing strategy to be able to help identify those individuals, to be able to remove their leadership. Isis has leadership like al qaeda has leadership. Its important to be able to eliminate the individuals that are leading the organization. Its also important that we actually take away the parameters of why theyre trying to actually do this. You have no problem, senator, excuse me for interrupting you have no problem for the u. S. Targeting these individuals and killing them . No i do not, actually, wolf. The reason is isis has been very clear that they want a worldwide Jihadi Movement to overthrow multiple locations, to be able to inflict as much terror. Whether it be the United States our allies across the middle east. We made that clear with threats coming down from july the 4th for us. This is a group thats interested in worldwide domination and spreading this kind of hatred around the world. So it is important that the United States step is up and leads because we cannot ignore real threats. This was the same thing we faced with the taliban and al qaeda, so say theyre thousands of miles away what does it matter . Until they did a coordinated attack on american oil soil and we understand it does come to us whether we Pay Attention to it or not. In washington today, senator, at the navy yard, we saw Law Enforcement come out in huge numbers responding what turned out to be fortunately a false alarm. But did we see an overreaction . Overresponse . Actually thats just the response you would expect in Something Like the navy yard with the shooting that happened there before. Theyre responding to it. It ended up being a largescale drill, to say the least. It was a false alarm. But we actually saw Law Enforcement in a coordinated effort being able to respond to that in the entirely appropriate way for an active shooter. Thankfully there wasnt an active shooter there. It is good to know Law Enforcement has that kind of coordination. And in that moment we do have appropriate response. Is this the state of concern, the state of concern what we call the new normal . It is for now. Were a nation that is still at risk and there is the sense among americans that we can sit back because were pulling out of afghanistan, were out of officially iraq in that zone. But americans need to understand there are people around the world that really do hate us that really do hate our freedom. Its difficult for us to be able to process because were such a nation that has great care for people around the world. We do such incredible charity around the world. We have this perception that we leave them alone, they leave us alone. We know clearly from radical islam, that is not true. They actually develop worldwide recruits by attacking america and attacking the west. The more they can attack us the more they can poke us the more people have that philosophy move to help them. So attacking us is actually recruiting elements for isis which seems foreign to us. We are still a nation at risk and this is extremely important that we can still continue to defend ourselves and our families. Should u. S. Military bases here in the United States, including your home state of oklahoma where there are several major u. S. Facilities should they be on a heightened state of security alert this weekend . Maybe for the rest of ramadan, the muslim holy month, which goes through midjuly . There is always a perception during ramadan, weve seen other attacks in previous years. You mentioned early bear the base in the uk. They saw basespecific things for them they wanted to make that decision. Youll remember about a month ago, multiple bases went on heightened security because they sensed that there was a threat coming to bases. Thats not specific at this point to any of those bases. They would be on the same Security Status theyre always on and being prepared as another person in the United States would be. This is a group thats really energized by lone wolves individuals that are unpredictable, that step out and say, i believe in this isis philosophy this particular brand of radical islam, and i want to make a statement for isis. This is not something thats highly coordinated, this is just a message to go out and say, if you hate america like we do you hate their freedoms then step out and do what we do. Senator lankford, thanks very much for joining us. Thank you. Lets hope its a quiet, very peaceful july fourth holiday here in the United States and around the world. Just ahead, a pilots fatal mistake now revealed. We have details of what he did wrong and his last words as his plane went down. Plus a twist in the d. C. Mansion murder case as the man accused of the gruesome killings now drops a courtroom bombshell. You pay your Car Insurance premium like clockwork. Month after month. Year after year. Then one night, you hydroplane into a ditch. Yeah. Surprise. Your Insurance Company tells you to pay up again. Why pay for insurance if you have to pay even more for using it . If you have Liberty Mutual deductible fund™ you could pay no deductible at all. Sign up to immediately lower your deductible by 100. And keep lowering it 100 annually, until its gone. Then continue to earn that 100 every year. Theres no limit to how much you can earn and this savings applies to every vehicle on your policy.