In the United States a great deal of mourning. The loss of a political giant and an american war hero. Senator john mccain died saturday after a lengthy battle with brain cancer. His final moments were spent at his home in arizona surrounded by his family. Tlaflags across the United States are flying at halfstaff in honor of senator mccain. You see the white house here, the flag lowered. Remembering him. People will have several opportunities to pay respects to mccain throughout this week. Cnns kyung lah reports. Reporter senator john mccain remembered for being such a Prominent National figure was arizonas favorite son. And it is here in his home state that memorials will begin. They start on wednesday. The flags here at the State Capitol have already been lowered, and it is here at a private ceremony in the rotunda that the memorials will begin. For six hours he will lie in state here at the arizona State Capitol. The public will be able to come in to bid their farewells to their senator. On thursday morning there will be a Public Memorial Service at a phoenix baptist church. And then he departs for washington. On friday the senator will lie in state at the u. S. Capitol rotunda. On saturday a national Memorial Service at the national cathedral. And then on sunday senator mccain will be laid to rest at the u. S. Naval academy in annapolis. It is there he began his Public Service and where his body will find its final resting place. Kyung lah, cnn, phoenix, arizona. Lets get some perspective on the legacy of john mccain, and we are joined by scott lucas, professor of International Politics at the university of birmingham. Thanks so much for being with us. Good morning, rosemary. So with the passing of John Mccain America has lost a hero and a fearless politician who was never afraid to question his own partys stand on various issues. What does this mean for the country, and who might fill that void . You know, so many great questions. But let me start for a moment with john mccain because i need to be honest with your viewers. Ive got very mixed feelings about john mccains policies that he pursued. I would disagree with many of them. Both domestically and in American Foreign policy. But i think theres two things about john mccain that i note. The first is that he did change his positions and he changed positions not to be a maverick but because he thought it was right to change positions. Say, for example, that he opposed Barack Obamas obamacare in 2010 but last year when the Trump Administration tried to kill it off he saved the program because he said there was nothing to replace it. He was castigated by many republicans, not just trump, for doing so. He used to be a supporter of the hardest line antiimmigration measures. For example, in arizona. But in 2013 he looked for a way forward with immigration reform, reaching out across the aisle with democrats to try to pursue that. An issue that were still battling with five years later. And i think the thing about john mccain is he could be temperamental at times. He could be coarse in his language at times. He could be insensitive in comments about other countries at times. For example, about iran or about the middle east. But you were almost ufrmsly hearing from colleagues or from journalists or from activists that no matter what their political views he treated them with decency and respect and he wanted to hear from them. He wanted to hear from them even if he differed with them to try to establish a dialogue on what could be done. And if theres something america takes away from this, apart from commemorating both his strengths and his flaws, its that idea that we need to get back to that dialogue amongst all of us, not just politicians in the very near future. Right. Now, President Trump eventually sent out a tweet offering his prayers and condolences to john mccains family. But according to the washington post, the president did this to avoid issuing an official white house statement praising john mccain as a hero. Why would mr. Trump do that, and what does it say about him and his leadership style . Because donald trump despises john mccain. Thats why he wouldnt utter his name even as he insulted him in the final weeks of his life. For example, at campaign rallies. We could spend much time on why trump despises mccain. Personally, i think trump is intimidated, or was intimidated by mccains intelligence, by his forthrightness. He hated the fact that john mccain was liked by so many people in the u. S. So he saw him as a rival. Thats why he said i dont like people who are captured and denigrated those 5 1 2 years that john mccain spent as a prisoner of war in north vietnam. Of course later on donald trump just hate td when john mccain wouldnt follow trumps line on all issues. You know, mccain supported the Trump Administration 85 of the time, but when he disagreed on health care, on immigration, then he became anathema to donald trump. But you know, rather than focus on donald trump today, a donald trump who last night tried to proclaim hes americas alltime favorite president because hes so strong on the troops, id rather focus on mccain and recognizing what we can learn from him while recognizing that he wasnt perfect. Because what were going to need from politicians, from activists, from journalists, from all of us is a way to repair the damage. Were going to need from all of us a way forward. And were going to need a way forward which is not based on insult or narcissism but on an ability to work with those even if you think they might not exactly share your own views. And for at least today donald trump is at the side of my thoughts and john mccain and others like him are at the center. Scott lucas, we thank you for your analysis and of course your perspective. Thank you. Now to the pope. Wrapping up a weekend trip in ireland and there he asked for forgiveness for years of unchecked sexual abuse by members of the clergy. Thousands of people gathered in dublins phoenix park sunday to see the pope say mass. He told the crowd the church failed to provide abuse survivors with justice or the truth. But the pope himself is facing claims from a former top vatican official that he ignored allegations for years that a cardinal was abusing victims. Lets hear more about how the hope is responding to those claims. Cnns Delia Gallagher live in rome. Do people feel the words he uttered go far enough . Throughout the weekend in ireland we kept hearing over and over again that people didnt want to hear just words, they wanted action. They certainly got words from the pope, words of sorrow and regret and asking for forgiveness. But the action part remains to be seen for many people. And i think especially now given the new wach of the pennsylvania grand jury report in the United States there are still some Unanswered Questions for people in the vatican in terms of how they are addressing this scandal, a scandal which frankly has been going on at least since 2002 with the boston allegations. So i think the short answer is no, george, that people are not yet satisfied with the response from the vatican. Also, delia, lets talk about the allegation of this former archbishop that the pope knew about sexual abuse allegations against a cardinal in 2013 but that the pope did nothing about it. Well, george, that was a real bombshell that the archbishop, the former envoy to washington, d. C. Releasing a statement, 11page statement implicating pope francis and a number of other Church Officials for knowing about the allegations about cardinal mccarrick. The pope did respond to a question on the plane returning to rome last night. He said that he had read the 11page document and here is what he told journalists. He said read the statement carefully and make your own judgment, i will not say a single word on this. I believe the statement speaks for itself. When some time passes and you have drawn your conclusions, i may speak. So george, the pope really not confirming or denying the allegations, and depending on whether or not you are a supporter of francis, his response will be satisfactory or not. Of course supporters of francis saying that perhaps the archbishop as a conservative has an ax to grind with pope francis but others saying, well, the allegations are simple enough to respond to if the pope wanted to. So right now well have to see whether or not the pressure builds from within the church really regarding these allegations or whether people are satisfied with Pope Franciss response. George . Delia gallagher live for us in rome. Delia, thank you. Mark healy is a member of ending clergy abuse, a globalwide group of abuse survivors and act visitors. And he joins us now from dublin, ireland. Thank you, sir, for being with us. How are you . As a survivor yourself what is your reaction to pope francis refusing to say a single word about this letter from a former archbishop about the pope allegedly covering up abuse in the church . I think the pope is on the run. I think hes firefighting and hes been firefighting since his major gaffe back in january when he was leaving chile with his infamous all is lies, all is calumny. Its a comment that should be directed toward the church and the hierarchy. It is they who are covering up, concealing and lying to everybody about what really has gone on in the past and what is going on to address it. Pope francis has taken his name from a saint whose prayer is all about action. This pope is not living up to any action. Hes on the run. And i think now its a house divided and its going to fall. I think these allegations raised against him and his knowledge of mccarrick clearly show that theres so much happening in respect of what needs to be said about their knowledge of the abuse scandal itself that they dont know and cant get their messages straight. Theyre now infighting. This is very serious. This is the beginning of the end as i see it. And certainly we in eca are calling for a new paradigm, a new discussion so that we can get to the bottom of what are the injustices that so many survivors worldwide have had to suffer and endure from this particular institution. I do want to talk to you about the action youre calling for in just a moment. But i want to get to the fact that the former archbishop didnt offer any evidence to support his accusation and we dont know what his motivation may be for going public with this accusation. Some have suggested that hes a conservative and this is his way of attacking pope francis. The pope, though, says the letter speaks for itself and people should make their own judgment. So what is your judgment when you look at the wording of that letter . Well, i have to say, i havent seen the wording of his 11page letter. Ive been reading about what has been this disclosure and this call for his resignation. My response to that is certainly that there needs to be a robust response to the points raised by this particular cleric, or hierarchical figure, by the pope. And the pope is not going to discuss i think these matters in public because then other revelations will certainly come of this. So no, there is more in this story and certainly my belief is that the accusations are true and that there was widespread knowledge about mccarrick. I mean, one would think that if they werent true he would say that straight out. But its very difficult to make any judgment at this point. But i want to go back to the question of actions because many catholics have called for less words and more action and some in america want the bishops to resign. What action would you like to see the church take in response to this abuse now . The setting up of a forum in which we can have a truth and reconciliation worked out. And it has to be on an international footing. But before all of that were looking for full disclosure and frank disclosure of all the church records. So that starts with what was gathered by his predecessor, pope benedict, whilst he was head of the cds. Calling for all globally to be sent to the doctrine of the kong rgation of the faith so we know these files are in the vatican. We also need to know worldwide in each of diocese, archdiocese that there are files held there also and not to leave out a major gripe, those of Mission Orders of congregations whose superiors also hold enormous data and information about their members. Later this morning we will be revealing additional names that were revealed here in ireland, 88 of them already, and that number is going to be extended this morning here in ireland. And ecas going to release that with bishops accountability, or bishop accountability, at 10 30. Mark healy, thank you so much for talking with us. We do appreciate it. Still ahead, another mass shooting in the United States. Investigators trying to learn why a man opened fire during a video game tournament in florida. You wont see these folks at the post office. They have businesses to run. They have passions to pursue. How to they avoid trips to the post office . Stamps. Com mail letters. Ship packages. All the Amazing Services of the post office, right on your computer. Get a 4 week trial plus 100 in extras including postage and a digital scale go to stamps. Com now and never go to the post office again. Another mass shooting in the United States has brought heartache to the state of florida. This was at a video game tournament in the city of jacksonville. Two people were killed when a young man opened fire and then killed himself. Fleece have identified him as a 24yearold from baltimore. His motive is not clear, but we do know that he was competing in a tournament which was being livestreamed online. Were about to show you video of one of the games going on when the shooting started. We do warn you you may find the video disturbing. You can hear the gunshots and at least one person reacting to being shot. Listen. Got a lot of good games going on. Its going to be hard to get them on stream. Its a lot. Its not a tough out today [ gunshots ]. Oh. [ bleep ]. Ow oh, [ bleep ] what are you shooting with . Oh [ gunshots ] [ scream ] chilling audio there. And we now know the identities of the two people who were killed. One was taylor robertson. He was 27 years old, from west virginia. And eli clayton, 22 years old, a former High School Football player from california. Robertsons gaming sponsor tweeted that the men were great competitors and wellloved members of the madden community. Investigators have searched the suspects family home in baltimore. A neighbor says that he was rarely seen. Cnns Polo Sandoval has this report. Police in jacksonville, florida confirm the suspect behind the nations latest mass shooting is a 24yearold man from baltimore, maryland. Police confirming his identity. David katz is among the three people dead at the scene. Katz allegedly opened fire at a video game competition sunday afternoon inside that jacksonville restaurant. Police also believe that katz was a participant at this video game tournament though they have not confirmed a motive only saying he used a handgun if the shooting. Investigators say katz shot and killed two people. Nine others were also shot and are recovering from their injuries. Police now asking the community for any video. Theyre already going over that footage that already has been circulating online that shows the seconds before those shots rang out offering a picture inside that game bar. Investigators also conducting a search of the suspects vehicle as they try to piece together a motive in this case. Polo sandoval, cnn, new york. Joining me now to talk more about this disturbing story is john matthews. He is a former Dallas Police officer and the author he of Mass Shootings six steps to survival. Thank you so much for being with us. Good to be here. The details of course are chilling. 24yearold david katz of baltimore killed two people, wounded nine others, then turned the gun on himself and took his own life. We dont know the motive just yet, but how does Something Like this happen and what security measures needed to be in place at this tournament to try to prevent a shooting like this . I can tell you at any public gathering we need to put security measures in place that are going to mitigate the chances of a shooting like this happening. Weve got to as the public enters check them just like we check them at athletic events and highprofile public facilities. Anytime weve got the public getting together weve got to check people, check their bags, and make sure theyre not bringing a weapon in. In this instance we had a video game conference going on and the shooter obviously knew about that. Ive watched many of these videos, and the thing that disturbs me the most is that you watch the videos and these young people kept playing the games. They heard the shots, they saw the shooting occurring, and they were playing the games. They were so focused, so intent. And so this shooter really had a run of the whole place. Yeah. I dont think any of these video gamers had any idea what was actually taking place. Your book, though, is about how to survive a shooting like this. What should people do when theyre taken by surprise by an incident like this . A lot of the time not even realizing that a shooting is taking place. Well, the first step is youve got to be situationally aware. Youve got to be aware of your surroundings. That was the sad thing about today is these kids were focused on qualifying for this tournament, they were focused on the game and you could hear the gunshots and see the games they were still playing. So youve got to be aware of your surroundings. The first and best thing you can do is exit the area, get away from the gunman as fast as you can in a safe manner. That usually means not going out the primary exit but going out some secondary exit away from the gunman. If you cant exit, the best thing to do is find cover. Anything that will stop bullets. Thats what youre looking for. It might be video game machines. It might be furniture. Soda machines. Anything that will stop bullets. If you cant find cover, find concealment. Concealment is anything that will hide you. If you can stay out of that shooters line of sight