Radicalized whether it was here or its unclear if he has any ties to any other organizations. The saudis have promised full cooperation with the investigation. Were going to take them at their word. And were now learning from the defense secretary, mark esper, saying one or two saudi nationals who were friends of the gunman filmed the attack, but it isnt clear if the actions are being considered nefarious. There are reports that several saudis have been detained and that several of them had been filming the incident. First of all, is that true . And there are some top florida officials willing to say this was a terrorist plot. Yeah. So some were detained, friends of his that were also on that base, as i understand it. And i also was told that some one or two were filming it. Whats unclear is were they filming it before it began, or was it something where they picked up their phones and filmed it while they saw it unfolding . That may be a distinction with or without a difference, but we need to let the investigation play itself out. That would not be an abnormal response to shoot one of your colleagues who is shooting americans. I dont know. Im not trying to pass a judgment on it at this point in time. Today people pull out their phones and film anything and everything that happens. The fbi did confirm the gun used in the attack, a glo glock. 9millimeter handgun, was purchased legally in florida by the shooter. Brynn gingras, there are so many mixed messages. Reporter there are many mixed messages. Before i get to the investigation, i want to point out something that happened here just moments ago before we came to you. That was this really somber procession that happened on the street here leading to the naval air station. People lined up on the street with flags with a huge procession of the three men killed in this attack and their bodies in three separate hearses going into the naval air station. We understand there is some ceremony that will take place and those bodies will be returned to their families. Just an emotional moment we just witnessed here, and i talked to someone who said it has not rained in pensacola in some time, and today its raining. That sets the tone with where we are right now with the emotion coming out of this city. As far as the investigation, i want to tell you that we actually asked about the defense secretarys comments that he made earlier about those videos. We asked that directly to officials on the ground, and we did get a response just moments ago. Essentially a spokesperson from the fbi saying that they can confirm a bystander was taking video before the attack happened and even after First Responders came im sorry, after the attack started and even as First Responders came to the scene. They have talked to that person. That person is cooperating and that is all part of the investigation. They said they are also collecting Video Evidence from the scene which includes surveillance cameras on the base as part of that investigation. That was the answer we got in response to the defense secretarys comments. Now, overall, this investigation, we did get a briefing from officials here on the ground. They said the main goal right now is to find out, did this gunman act alone in the sense of was he a lone wolf or part of a Larger Network . Theyre trying to get to that point of motive, right . Was there some sort of idealogy that influenced him to carry out this attack. They dont have that answer just yet. Thats why were understanding theyre not calling this a terrorist attack because they dont have that motive. But they said theyre certainly conducting this investigation with the presumption of an act of terrorism which allows them to really open up some more investigative tools. Part of this investigation, where it stands right now in addition to continuing to analyze that Video Evidence, theyre also talking to people, including those saudi nationals that we have been reporting who were taken in for questioning. Our understanding is theyre being cooperative, theyre answering officials questions, and theyre being restricted to stay on the base while this investigation continues. Not detained as sort of thats been going around as well. Again, this is where the investigation stands right now. So many questions right now leading to this gunman. What were his motivations . Where was he . What sort of factors played into the decision to carry out such an attack that happened on friday morning, fred. So, brynn, can i ask you again what youre talking about, officials telling you about the individual that may have filmed something, calling that person a bystander after the fact versus, we heard from the defense secretary who said one or two saudis, friends. So there is a big difference between those descriptions. Reporter yes, there is a huge difference. And i can tell you that when we had this News Conference and asked these questions to the fbi, theyre pretty tightlipped on exactly what theyre learning from these saudi nationals, these friends. And thats why i think it is interesting that they said bystander in that official word. But its very possible that the video that there is multiple videos, you know. These are things theyre looking at, and thats why in their official response they also mentioned the Surveillance Video thats there on the base. They wont necessarily clarify what the defense secretary said, but they did want to make it clear that these saudi nationals, these friends of his, these classmates associates, theyre helping out with the investigation. That was definitely made apparent in this News Conference earlier today. Brynn gingras from pensacola, appreciate it. I want to bring in Nic Robertson and peter bergen. Thank you both. I appreciate it. The gunman spent time in saudi arabia before coming back to the u. S. He started training in the u. S. , went back to saudi arabia and then back to the u. S. And now looking at the timeline, what are they learning about the sequence of events . Reporter of course, its not uncommon for cadets, trainees who are on a threeyear course within the United States coming from saudi arabia to come and go between the two countries. That would be quite normal during vacation periods. But what we understand here, and the king has been very clear about this, that the Saudi Security services should cooperate fully with u. S. Investigators. We know that there are fbi officials permanently based in saudi arabia. So the key questions are going to be when he was back in saudi arabia, where did he go . Who did he meet . What did he do . Where did he pray . What did his family have fwos this . We reached out in the early stages of this investigation, and we had comment from his family. They subsequently decided not to comment at the moment on the ongoing situation, which gives the impression, and i say impression because we dont know for sure, but all the likelihood would be that saudi investigators assisting u. S. Officials would be going to the family to get those very simple questions answered. Did he stay at home . Was he doing anything different . What were the conversations you had . What was he doing . Who were the friends he was seeing . All those sorts of details you would expect officials here to be able to put that very specific timeline on so they can understand precisely what he was doing. And that key question that we did ask the family 24 hours ago, did you recognize any change in him over the period of his training, and they said that they hadnt. Obviously investigators likely to double down on that point as well, fred. So, peter, you know, how much stock do you put into the kind of information saudi arabia might want to divulge about this officer, you know, in the Saudi Air Force who was now in the midst of training here in the u. S. And for this to now unfold . The natural reaction of saudi authorities to anything like this is to move very slowly and on to be pretty opaque. We only have to look at a Jamal Khashoggi investigation who was working for the Washington Post and murdered in the constable of istanbul. That investigation really isnt complete. They have 11 people who are supposedly on trial in saudi arabia. Its not really clear exactly who they are. Obviously that was hugely embarrassing to the saudis, and they kind of have dragged their feet, to put it mildly. Now, in this case, as nic is reporting, clearly there is sort of an impetus to get this kind of, you know, move the investigation forward. As nic knows as well, because he spent a lot of time in riyad and saudi arabia, as i have, that doesnt make a transparency particularly when things can be embarrassing for them. I would suspect this will go on for quite some period of time. So, nic, do you think that saudi arabia is anticipating any changes in this cooperation, this type of Training Program that has been afforded to saudi nationals . I think that they can be expected to provide more scrutiny in country. When the students, the trainees, are in the United States, i think there is going to be a bigger onus on saudi arabia going forward, whether this is something that is sort of written down and structured or the saudis take on themselves. They value the relationship with the United States, they value the weapons, they value the partnership in the region, they value the fact that the United States adds to their Security Posture in the region. Theyre not going to want to damage that, at least not without having something ready off the shelf to replace it with. So theyre going you would expect them, therefore, to want to measure up to whatever the United States asked them to do. Part of that might be being proactive to monitor more carefully their students who are in the United States. However, as peter knows, ive spent a lot of time in saudi arabia over the years, and weve come to recognize that those practices will be in place six months or so, but they may not be followed up on. There may not be the sort of Due Diligence down the line that one would anticipate. There may be some of the ideas, while good and put forward, may not always be followed through. There will be pressure probably from the leadership to do a better job in the future, but how well thats maintained not clear. Well leave it there for now. Nic robertson, peter bergen, thank you both. Appreciate it. Still ahead, house judiciary chairman jerry nadler not mincing words when it comes to impeachment. I think the case we have, if presented to a jury, would be a guilty verdict in about three minutes flat. The case democrats are building and how republicans are responding. It was in this small Little Village in connemara. Right connemara it is theres one gift the whole family can share this holiday season, their story. Give the gift of discovery, with an ancestrydna kit. Todays Senior Living communities have never been better, with amazing amenities like movie theaters, exercise rooms and swimming pools, public cafes, bars and bistros even pet care services. And theres never been an easier way to get great advice. A place for mom is a free service that pairs you with a local advisor to help you sort through your options and find a perfect place. A place for mom. You know your family we know Senior Living. Together well make the right choice. Going back to the doctor just for a shot. 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Pay no more than 5 per dose with copay card. Welcome back. On the eve of another critical impeachment hearing, democrats are back on capitol hill, and the Judiciary Committee could vote for impeachment of President Trump as soon as this week. They are holding a mock hearing behind closed doors in the same room where tomorrows session will take place. Cnns lauren fox is on capitol hill for us. Lauren, what more are you learning about these mock hearings underway . Reporter well, obviously this speaks to just how much preparation is going into the next week, fredricka. This big hearing tomorrow where we expect that the Judiciary Council as well as the house Intelligence Council will present what they believe is the evidence to impeach president donald trump. Of course, republicans will refute that tomorrow, but here is jerry nadler, the chairman of the house Judiciary Committee, laying out just how much evidence he believes there is against President Trump. We have a very lock solid case. I believe the case we have, if presented to a jury, would be a guilty verdict in about three minutes flat. All of this nonsense about hearsay evidence. There is considerable direct evidence, and it behooves a president or his partisans to say you dont have enough direct evidence when the reason we dont have more direct evidence is the president has ordered everyone in the executive branch not to cooperate with congress in the impeachment inquiry. Reporter now, republicans saying theyre very comfortable defending the president tomorrow, basically arguing that they think democrats have rushed through this process. Here is a close ally of President Trump representative mark meadows. He talked about investigations. If you look at the transcript, i think he said will you do us a favor based on the United States going through a lot, talking about 2016 elections. And when you see that, dana, i think probably the biggest thing is this president has gone through so much. Theyve been making accusations about this president that not only are not based on facts but theyre false. And so in doing that, getting to the bottom of it is key. Reporter and, of course, after a twomonth investigation by the house intelligence committee, we could see a markup of vote in the house Judiciary Committee on the articles of impeachment at the end of this week. That gifving you a sense of jus how rapidly this is moving forward. There could be a vote on the full floor of the house of representatives before christmas to impeach president donald trump. Fredricka . Lauren fox on capitol hill, thank you so much. Up next, shes been calling for President Trumps impeachment for quite a while now since inauguration. Well ask congresswoman Maxine Waters if the Mueller Report should be incorporated in articles of impeachment, and dont forget to join Anderson Cooper and kelly ripa live as they name the 2019 cnn hero of the year. Cnn heroes an allstar tribute tonight at 8 00 p. M. Here on cnn. When you shop with wayfair, you spend less and get way more. So you can bring your vision to life and save in more ways than one. For small prices, you can build big dreams, spend less, get way more. Shop everything home at wayfair. Com the ones that make a truebeen difference in peoples lives. And mikes won them, which is important right this minute, because if he could beat americas biggest gun lobby, helping pass background check laws and defeat nra backed politicians across this country, beat big coal, helping shut down hundreds of polluting plants and beat big tobacco, helping pass laws to save the next generation from addiction. All against big odds you can beat him. 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Click, call or visit a store today. As the democrats gear up for a key impeachment hearing tomorrow where they plan to lay out the facts for possible articles of impeachment for donald trump, democrats seem split on whether to lay out the articles of impeachment to include obstruction of justice. Intel chairman adam schi