could mean more violence. if you're looking at protectees, including the current president, donald trump, what do you do? >> the secret service does monitor online activity, particularly when it comes to threats made against protectees. and, as sam said, that has increased over the last few days. it's increased dramatically over the last few years. and that's why the secret service initiated this section within headquarters to be able to monitor that sort of activity, whether it's groups making, sort of, statements or individuals. so, they do monitor that. but again, the lone wolf flies under the radar. it's hard to detect, especially when they don't include their plans with others. it looks like that's the profile of this individual.

>> director smith, and sam -- thanks to both of you. i want to take a moment to show you a remarkable picture captured by "new york times" photographer doug mills. look closely. it appears to show a bullet soaring past the former president's head, as he stood at the podium during yesterday's rally. this is incredible that you can see this. and of course doug mills has covered presidents for more than three decades, and he said, quote, he has never been in a more horrific scene and had never envisioned being in a situation like this. this is one of the most respected white house photographers that's out there. and that he captured this image is just incredible. it's just part of the tapestry, as we, as reporters, along with investigators piece together what exactly happened and what is at the heart of this security

failure. ahead, how saturday's event unfolded. we'll be right back.

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potential motive, investigators are piecing together the events leading up to the attempted assassination. maurice dubois takes a closer look at the timeline. >> reporter: despite 90 degree heat, thousands descended on the butler farm show, about 100 acres used for agricultural exhibitions, and the place where donald trump has appeared before. butler county voted overwhelmingly for trump in 2020, so this was expected to be as friendly a crowd as you'd find in the country. the former president and presumptive republican nominee took the stage at 6:03 p.m. >> hello, butler. hello to pennsylvania. >> reporter: at about the same time, a man was spotted on a roof of a building about 160 yards away. he was carrying an ar-style semiautomatic rifle. spectators alerted police. >> we noticed the guy crawling army -- you know, bear crawling up the roof of the building

beside us, 50 feet away from us. so, we're standing there, you know, we're pointing at the guy crawling up the roof. >> and he had a gun? >> he had a rifle. we could clearly see him with a rifle, absolutely. we're pointing at him. the police are down there running around on the ground. we're like, hey, man, there's a guy on the roof with a rifle. and the police were like, huh? what? like they didn't know what was going on. we're like, hey, right here on the roof. we can see him from right here. we see him. he's crawling. and next thing you know, i'm thinking to myself, why is trump still speaking? why have they not pulled him off the stage? >> an armed officer attempted to -- >> all i know is the officer had both hands up on the roof to get up onto the roof, never made it because the shooter turned toward the officer and rightfully and smartfully, the officer let go. >> and then what happened next?

>> well, assuming that the shooter turned his rifle back over toward the crowd and the rally and started shooting. >> probably 20 million people. >> at 6:11 p.m., mr. trump was talking about immigration. then the first three shots, which came from his right. >> take a look at what happened. >> get down, get down, get down. >> reporter: followed by three more and what sounded like an outgoing shot. video recorded by a member of the audience shows snipers with the secret service aiming in the direction of the gunman. >> take a look at what happened. >> get down, get down, get down, get down. [ screaming ] plus if

. >> hold, hold. are you ready? on you. >> move. >> all guys here. >> ready? >> we're good. >> shooter's down. are we good to move? >> we're clear. >> we're clear to move. >> we're clear. >> come on, sir. come on. >> i got you, sir. >> let me get my shoes. >> it took a minute and a half to get the former president off the stage. and as they tried to hustle him to his fating suv, he raised his fist several times in defiance

and seemed to say, fight. some people in the crowd turned their attention to three others who'd be shot. they included corey comperatore, 50, a firefighter, dead, and big fan of donald trump. he had been shot in the head. josh shapiro is pennsylvania's governor. >> i asked corey's wife if it would be okay for me to share that we spoke. she said, yes. she also asked that i share with all of you that corey died a hero, that corey dove on his family to protect them last night at this rally. corey was the very best of us. may his memory be a blessing. >> reporter: two other people were critically wounded. cbs news has learned one of the victims is in a medically induced coma. trump was treated at a nearby hospital for the wound to his ear. at 8:42, he posted on truth

social, i was shot with a bullet that pierced the upper part of my right ear. i knew immediately something was wrong in that i heard a whizzing sound, shots, and immediately felt the bullet ripping through the skin. much bleeding took place. president biden made a statement in delaware. >> there's no place in america for this kind of violence. it's stick. it's stick. it's one of the reasons we have to unite this country. we cannot allow for this to be happening. we cannot be like this. we cannot condone this. >> reporter: mr. biden returned to the white house, where he was briefed on the assassination attempt. this morning, the fbi identified the gunman as thomas matthew crooks. he was 20 years old and lived about 50 miles from the rally site in bethel, pennsylvania. he graduated with an engineering degree from a community college but worked at a nursing and rehabilitation center. he was a registered republican. a classmate told cbs news that crooks had tried out for the high school's rifle team but

failed to make it. throughout the night and morning, investigators searched crooks' home and car, where they say they found explosive devices. this afternoon, former president trump released another statement on social media. i was going to delay my trip to wisconsin and the republican national convention, he said, by two days but have just sided i cannot allow a shooter or potential assassin to force change to scheduling or anything else. therefore, i will be leaving for milwaukee as scheduled. he departed from newark airport in new jersey and travelled to milwaukee for the convention, where he will officially be nominated as his party's candidate for president. >> now, in terms of the investigation tonight, the fbi says it's received more than 2,600 tips so far. investigators are now working on that timeline in reverse, if you will, from the shooting and all the moments leading up to it, as they dissect a would-be assassins life in the days and weeks prior to july 13th.

norah? >> maurice, thank you. coming up, former house speaker kevin mccarthy joins us here in milwaukee, after speaking with donald trump today.

- lift the clouds off of... - virtual weather, only on kpix and pix+. welcome back. former house speaker kevin mccarthy spoke with trump today and joins me here in milwaukee. good to see you. >> thanks for having me. >> how is donald trump today? >> you know, what's so amazing, he came so close to losing his life last night, and he's upbeat. we talked about it. he talked to me about hearing the sound of the bullet slashing through his ear, but then he was in total trump form, where he was educating me that, yeah,

there's a lot of blood within the ear. kevin, you might learn this because you've got big ears. kind of humorous. i can tell anyone would change somewhat. he was worried about the family, the individual who died, coming to his event. but he was looking forward to coming to milwaukee. >> did he seem shaken at all? >> not what you would thought of. no. i think -- he's been through so much in life. even if you take the last year, i don't know of any person that could go through indictments, trials, being thrown off and now this. i mean, he has more fortitude than anyone i know. and to compartmentalize this. but this is a moment in time i think will affect him somewhat. you cannot be that close to losing your life, being in a situation where someone shot eight bullets, someone in your own rally got shot, that it doesn't change you in some

manner. >> how do you think it changes his presidential race? >> i don't know politically where he's at. i think seeing how he dealt with that -- if i'm an average american citizen, i'm sitting back, how would my commander in chief act in a time of turmoil or others? i think the picture of him standing up with a bloody face, a fist in the amerir with an american flag behind it, that's an iconic image that will last a generation. i think if they make a decision on leadership, it will be no question. i think this is an opportunity, much like reagan had, where you had reagan democrats, i think you're going to find people looking at trump who maybe never have voted for a republican before. >> you were speaker of the house on january 6th. we spoke that day. we were live on the air for more than ten hours or so, and i remember our conversation vividly, because you called on the president, to come forward, come before the cameras, and ask for the violence to stop. and you said, this should be a

moment that brings us together, not divides us. but it's almost like trethe rhetoric's gotten hotter since then. >> it seems as though, from all campaigns. i've never seen something like this, where they go after something even through department of justice and others. i hope all americans reflect on this moment. have you pushed something too far where a 20-year-old kid would take an opportunity to try to assassinate somebody in a race. you would question whether you're safe to go to affiliate with any political party that you're fearful of your life. that's not america. that's not democracy. i will tell you today, i had other leaders of other countries call me about what transpired, that they're concerned about democracy, even in their own country, what they're hearing coming back. this is a moment in time all parties should reflect and know that they should tone it back. we've got to start respecting individuals that we disagree with. you can respect, at the same

time disagree with them and debate in a manner that's respectful. >> does donald trump bear some responsibility for that? does he need to change his rhetoric? >> you know, it's odd. this is a man that came less than an inch from losing his life, and the question is you're worried about him? i think when i look at all americans, i mean, i don't know that -- i look at our current president that less than two weeks ago said, you put a bulls eye on donald trump. what i'm trying to be is a fair american to tell everybody to dial back. i think anybody that gave any rhetoric has some responsibility to where this country has gotten in the last couple of years when it comes to politics. >> did you say that to donald trump today? did you say, look, we need to think about the kind of rhetoric we have here? we can set a standard here. >> my call today was with a man that came so close to losing his life, wasn't about that. it was a concern for him personally. i'm amazed he's here today.

he doesn't push anything back. what it shows to me is what donald trump really values. it's not about him. it's what he wants to do for the country. and think about it. anybody who runs for president, though, the fear that they could have. he could do a lot more in life. he could be very happy at mar-a-lago, but he's willing to risk that, even when his own family is concerned. i think if you watched donald trump through this whole campaign, i think this is a new donald trump that is more disciplined, that is more focused, that understands what it matters for this country for the next four years, and i think you'll see something much different here thursday night than you've seen in the past. >> and we may see him even before thursday night. >> i think so. >> kevin mccarthy, the former speaker of the house. thank you so much for being with us. we appreciate it. >> thank you. and ahead when we come back, what's next for the candidates, the campaigns, and the country? our political team on how this shooting changes everything.

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donald trump is now fundraising off the attack, and president biden is planning to continue fundraising tomorrow. let's start with robert costa. robert, what are you hearing from the trump campaign tonight?

>> reporter: former president trump, norah, has a major decision to make within the next 24 hours. who is he going to put on the republican ticket as his running mate. the vice presidential selection expected to be known some time by monday night, maybe tuesday morning at the latest, based on my latest conversations with people close to former president trump. at the top of the list, ohio senator j.d. vance, who now has an increased security presence outside of his home, though that does not signal in any way he's the test test test test test test test test test test names in the past week, as he mulls that final decision. we're all waiting, though, to see if an offer has formally been made. no word yet on that. >> and robert, one surprise, nikki haley, the former u.n. ambassador, who was campaigning hard for the republican nomination, recently released

her delegates, was not expected to speak here, is now slated to speak. what does that tell us? >> reporter: i was with former ambassador in the final days of her campaign. many continued to vote for her, even after she suspended her campaign. for her to come to this convention, not just to release her delegates, but to give a speech, is a real boost for the trump campaign at a crucial time where they want to consolidate republican support across the country, especially those republican who is might be wary of former president trump's conduct, thinking about his legal challenges in particular. >> robert, thank you so much. i want to bring in senior white house and political correspondent ed o'keefe and our chief washington correspondent, major garrett. ed, on that note, trump is now fundraising off of this assassination attempt. what are the pitches? >> i mean, among other things,

he's basically saying he loves the support. i will always love you supporting me. unity, peace, maga. he sent at least three or four of these over the course of the day, as he continues to recover and talk to supporters. this creates an awkward time in american politics. we now know the president, while he suspended his advertising for the weekend, is going to resume campaigning on tuesday, by going out to nevada, keeping to a schedule that hasn't stopped by the naacp to talk about voting rights and other concerns in the black and brown communities. you'll see the campaigning essentially resume. he'll begin with advertising. he'll echo what was said tonight, which is there can be a substantive debate about the issues in this country, and it can be done peacefully. we heard today that the heads of the democratic and republican party spoke to talk about, can we keep the temperature down? can we try to help quell the violence or the threats of

violence and hope that, you know, the next three months of this campaign are somewhat peaceful? but you talk to democrats today, those that are willing to talk, and they can see the next few days are going to be quite perilous for them from a crass political perspective because we've never seen this before. tonight the biden campaign chief said, much like the beginnings of the pandemic four yearsing a, we may be entering a period where things are just so unchartable in terms of how it can one can campaign and reach americans at a time of such ranker. >> the president in the oval office address telling people it's time to lower the temperature in our politics and we have a responsibility to cool things down. if you want to take action, take action at the ballot box. >> precisely, norah. and politics in our country is frequently interesting. it is rarely riveting. it will be riveting for the next four days here in milwaukee. people who are not necessarily drawn to politics are going to want to watch this convention to see what former president trump does, how often he appears here,

what is his stylistic approach, what is his rhetorical approach? what signals to the rest of the republicans here cheering him on take from his attitude, his demeanor, and his tone? all of that is going to be sifted and new in light of this traumatic, tragic experience on saturday, that will echo through the country not just for the next few days but the next few weeks. nikki haley, talking about the trump campaign, it was important in this moment, nay said, to emphasize in a way that was unexpected this call for unity, unity within the party. bring everyone here. even a sharp detractor of former president trump in this moment to say, everyone is welcome. we are all united as republicans, and we will support former president trump in this moment of not only survival and duress but progress toward the future. >> and not only is it about unity. resolve is a word i heard several times today. >> without question. >> senior party operative who's been at conventions like this since the 1970s, he says, i've

never seen people so resolved, so focused on winning in november, believing what transpired yesterday can slingshot the party into some kind of a victory. there has been so little chatter now, not even that much interest or concern, about who he picks for his running mate because there is the belief it may not matter, he can pull this off. >> i want to bring in katelyn hue by burns, who is outside here where the republican national convention is being held. katelyn, i know you have an update on some of the security precautions that are being taken. what can you tell us? >> norah, as you can see behind me, there are barricades up, and there are two security zones guarding this area. what you see behind me, that's what's known as the red zone or the hard zone. that is protected by secret service. where i am standing is still part of the broader security perimeter outside the convention. but this is what's known as the soft zone or the yellow zone.

what's significant here, norah, is that wisconsin is actually an open carry state. and firearms are allowed where i'm standing right now. they are not allowed behind those gates behind me because that's protected by secret service. but wisconsin state law p prohibits the city of milwaukee or local jurisdictions from banning firearms. the secret service protects that area, so they are not allowed there, but they are allowed here. and that has come up. i was at a secret service briefing earlier today, and the secret service, overseeing this convention, where about 50,000 people are expected to come, said they have no plans to expand that secret service perimeter, that red zone, and that there are no real threats at this point. norah? >> all right, caitlin huey burns, thank you. i also want to bring in scott macfarlane, because he is still in butler, pennsylvania. he was there covering the rally,

where there was that attempted assassination attempt. and scott, what's the community talking about tonight? >> reporter: norah, this transcends politics here. butler county wants to ensure nobody else has anything close to a shared experience. they're talking about their children. kids already have to deal with lockdown drills, worry about school shootings. we, as parents, have to warn them about who they talk to in their own neighborhoods, what they see on a computer. now we have to explain those images and this tragedy to our children. talk about summoning our better angels, modeling better behavior for our children, and ensuring they don't have this too. they should be enjoying the joyful periods of their lives. >> scott macfarlane, thank you for your coverage over the past day. we appreciate it. finally tonight, the last 24 hours have been one of the most unnerving in recent american history. a president candidate the victim of an assassination attempt.

this is something many have never witnessed before. on saturday, the political rhetoric turned violent. we do not yet know what the shooter's motive was, and we may never get all the answers. but one of the questions tonight, could this be an inflection point in the country's history. for two sides of the aisle who may not agree on much, there's one thing we've seen since last night's events. it's time to turn down the heat on the rhetoric, with both candidates for president calling for unity. earlier tonight in a rare oval office address, president biden called on americans to cool tensions. he told voters to come together and resolve differences at the ballot box, not with bullets. with 114 days left until the election, some lawmakers are reminding the country it is important to remember, we are americans first, not democrats, not republicans, americans. our coverage is going to continue on cbs news 24/7.

your local news. and for those of you in the west on a special edition of the cbs evening news. and stay with us right here throughout the week. we are going to have full coverage of the republican national convention every night at 10:00 eastern right here on cbs. and of course we will be on the cbs news app and streaming. i'm norah o'donnell. for all of my cbs news colleagues here in m . . around the country, good night. he's got a gun! [ sound of gunfire ] >> the shocking assassination attempt on former president trump at a pennsylvania rally.