plus, three decades later, the search heats up for the first missing child who appeared on the side of a milk carton. -- captions by vitac -- www.vitac.com more fallout from the secret service prostitution scandal. one source tells cnn more members are expected to be forced out anytime now for their part in that night of heavy drinking and escorts in colombia. let's bring in white house correspondent brianna keilar for the latest. brianna, what are you hearing about these upcoming dismissals? >> reporter: jessica, we're expecting that at least three secret service members, three more, i should say, will be pushed out today. now, that is in addition, as you know, to the three who already have, including two supervisors. these will come from those eight secret service agents who are currently on administrative leave and have been stripped of their security clearance. we also do know according to a senior white house official, jessica, that president obama will be briefed by the director of the secret service, mark sullivan. this is significant. it's been certainly the focus of a lot of questions in the white house briefings. because while the president's chief of staff and his deputy chief of staff have been in regular contact with sullivan, the president himself hasn't spoken to sullivan since the beginning of this scandal. so we do understand that he will be briefed. it is also important to note that by and large right now, jessica, republicans have been holding their fire when it comes to calling for mark sullivan to go. they've been saying they support him. the white house of course says they support mark sullivan at this point. it seems like a lot of people are holding their fire as we wait for the results of this investigation which could really prove pivotal to the director of the secret service, jessica. >> i want to add this, while you were reporting, if you check your black burberrblackberry, ys too, multiple e-mails from multiple white house officials telling us the president this afternoon in the oval office received a briefing from the director of secret service on the ongoing investigation. so multiple white house officials telling us that update did already in fact happen in the oval office with the president. and i wanted to ask you as well, this incident also involved members of the military. on that part of the story, there's been a lot less information coming out of the investigation, until now. what do we know on the latest on the military aspect of this investigation? >> reporter: there's been less information but we do know today that has widened just a little bit. we were reporting before there were ten members of the military, jessica, who were potentially involved in the scandal. today that number has grown to 11. we learned from sources that right now the way they are being treated is they have been restricted to their bases. bases in california, south carolina, as well as in florida. we understand from sources that there's six members of the army, two members of the marines, two members of the navy, and one member of the air force, jessica. >> all right, thanks so much, brianna keilar from the white house. we're learning, now, about two more of the men who already lost their jobs in the scandal, including one supervisor who used facebook to brag about checking out sarah palin. hear what palin is saying about all of it in about 30 minutes. and he is not out of jail yet but the man who admits to killing trayvon martin can be set free soon on $150,000 bail. george zimmerman took the stand wearing a suit and shackles at a bond hearing today. he used the opportunity to apologize to the teenager's parents. >> i wanted to say i am sorry. for the loss of your son. i did not know how old he was. i thought he was a little bit younger than i am. and i did not know if he was armed or not. >> david mattingly is live for us in sanford, florida. it was a remarkable thing to watch on television, david. how did the martin family respond to that? you were there in the courtroom. >> reporter: yes, this was completely unexpected. i was looking right at trayvon martin's mother and father as george zimmerman was talking directly to them. i didn't see much of a reaction at all. they were very stoic. at times during the hearing, they would turn to each other and whisper something but not much reaction at all. as soon as this hearing was over, they got up and left the courtroom very quickly. didn't speak to anyone. and then they had their attorney come out to the cameras outside the courthouse to express their outrage. >> why today when he made all those statements to the police, why not show remorse there, if he was sincerely apologetic for killing this unarmed child? >> reporter: zimmerman was also grilled by prosecutors when he mentioned this. the prosecutor questioned him about the timing of this and about why he didn't say something before. zimmerman said he did say that he was sorry to the police, sorry for what has happened. he also said that he was instructed not to talk to the family of trayvon martin. so that was his explanation for not say something sooner. >> david mattingly, thanks so much, from florida it joining me now for the legal perspective on john zimmerman's bond hear, cnn legal analyst sunny heston, a former federal prosecutor, and mark nijaim, a criminal defense attorney. first of all, sunny, we heard george zimmerman say he didn't know martin was a teenager and he didn't know whether or not martin was armed. why does it matter whether zimmerman knew martin's age or whether or not he was armed if he wasn't being attacked? >> well, yes, and i think that it matter, quite frankly, because what we heard today in the courtroom is very different from the evidence that we have heard. i mean, bottom line is he said in the courtroom he thought that trayvon martin was close to his age. well, we know that george zimmerman is 28 years old. on the 911 call, he describes trayvon martin as in his late teens. so that's a really significant inconsistency showing perhaps he's being disingenuous. he also said today in testimony, jessica, that, you know, he thought -- he wasn't sure if trayvon martin was armed. we know he told police that he shot in self-defense because trayvon martin grabbed his gun. so there are significant inconsistencies in the little bit that he said on the witness stand today from what has come out before. and i would suggest that that's going to be a problem for him in the long term. >> mark, there was a stunning moment during the hearing today when zimmerman's defense attorney questioned the state's lead investigator and got what sounded to me like a very weak reply. let's listen to this. >> do you have anything besides what you just identified, a copy of the probable cause affidavit? >> no reports or anything, no. >> any supporting documentation with you to the courtroom on his bond motion at all? >> no, i was not planning on testifying. >> mark, the entire country's watching this and yet the state seemed so unprepared. how is this possible? >> well, this is the way it often works, you know, there is a lot of bravado about bringing this case out and such, and it seems like as much time as was spent with the bravado should have been spent in preparing this case. how do you have a lead investigator show up to court and say "we weren't prepared to have him called." the burden of proof, the state knew that they had to establish proof evident, presumption great, and it had to be overcome by the defense. the only evidence there was that affidavit. so they knew that was going to be torn apart and to leave an investigator wide open, they completely came in unprepared. >> okay, sunny, let's move on. at one point, the defense asked the state's investigator whether he could provide any proof that would dispute zimmerman's claim that trayvon martin assaulted him first. listen to how the investigator responded. >> that contention that was given to us by him other than filling in the figures one chasing the other one, as to who threw the first blow, no. >> that's the state's case. that wasn't very powerful. is the state's lack of compelling evidence at the hearing today a sign that their overall case may not be very strong or is it just that they weren't very prepared? >> i don't think -- i think they were prepared actually so i disagree with mark on that but i don't think we can read into what we saw today. i don't think we can take away from that that this case is not a strong case or that this prosecution isn't going to be prepared at trial. the bottom line is this was a bond hearing. the burden was very, very high on the prosecution. they would have had to have proven their case beyond beyond a reasonable doubt. i suspect they knew that it was going to be very difficult to prevent george zimmerman from getting a bond and they did rely on the affidavit but it's very clear, jessica, in all cases that an affidavit for probable cause is not a complete recitation of the facts, it is a thumbnail sketch. of course the investigator wasn't prepared to testify because the government didn't call the investigator, the defense called the investigator, and that's something that's unusual. in fact, i think it played out the way many of us suspected it would play out. that george zimmerman did get some sort of bond package. i do believe the $150,000 bond was a little lower than it should have been, a second degree murder case. >> i have a feeling we'll have a lot more conversations like this coming up. thanks to both of you for being on. coming up, mitt romney works to cement his spot as the republican white house contender. i'll ask republican national committee chairman ryan prevus if it's working. plus, new clues about a little boy who went missing 33 years ago. why the case is heating up now. 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[announcer:] conocophillips. the republican national committee met today and welcomed mitt romney who spoke with members and he was later introduced by the 2008 republican presidential nominee, the senator john mccain. the theme of the event, unity. >> i am so gratified to see our party coming together in a solid team that is going to elect him president of the united states. we want to welcome you in a formal way. to a great family. >> well, it's good to see so many old friends. thank you. >> so romney is the presumptive nominee, right? not maybe jumping the gun a bit. reince priebus said yesterday, this tuesday, i think, is probably going to be a defining moment. he said tuesday. he joins me now from scottsdale, arizona. thanks for being with us. today's event was supposed to -- >> nice to be here, jessica. >> -- why wait till tuesday's primaries to call him the presumptive nominee? >> well, out of i thempg respect and deference to congressman paul and speaker gingrich. we're still talking to all the candidates. we have a little bit of different deal here. we've got to follow some rules. i think also just like i said out of respect for them it's important for us to continue talking and just making sure that we're moving slowly, we're communicating with all the campaigns. i think tuesday's important -- >> does that mean after tuesday you'll ask beginnigingrich and end their campaigns? >> no, i don't think i'd ever do that. i would let mr. paul and gingrich decide on their own what they -- >> why, you're the party leader, isn't it your role to step in and ask these campaigns to end, to help romney seal the deal and move forward? >> no, i don't think so. i think it's up to our -- it's up to our primary voters to help them and others make the decisions as to whether or not they want to stay in or not. it's a combination of momentum. it's a combination of delegates. it's money. i mean, it's all of those things. ultimately, winning and losing matter in these primary battles and that's why tuesday's important. so i actually think the opposite, jessica. i think in this country, i think people are tired of folks in washington telling them what they should do and what they shouldn't do and that's why we let this process play out. i think actually it's been going very well. you know, i think if you look at how the governor's doing, he's doing well. the party's getting pretty well uni unified. >> on that, cnn is reporting that rnc members and state chairmen had to sign a form pledging to support governor romney at the national convention before they could attend a private event with him today. three iowans apparently refused to sign that loyalty pledge. is that concerning, that some refused to sign? is that really the way to win over party leaders? >> well, no, i don't know a whole lot about that actually, jessica. i think the romney campaign had their own event for their own supporters and they were doing some things there. actually, the folks from iowa did actually end up taking their picture. it wasn't a big deal. there are some party rules actually that don't allow informal endorsements prior to declaration of presumptive nominee. so that formality means something in a lot of states. that's really the reason why some of the stuff goes on. it's not really out of, you know, out of disloyalty or anything like that. it just had to do with party rules in different states. >> let's look ahead to the general election. you wrote an op-ed in politico this week saying president obama is not doing enough for latino voters and that, quote, latinos also face an unemployment rate that is higher than the national average. but look at this. in the latest nba/"wall street journal" poll, 69% of latinos support the president, compared to 22% approval for mitt romney. that is huge ground to make up for your presumptive, likely presumptive, republican nominee. how do you do that without major changes in policy? >> well, i mean, first of all, i wouldn't crow with you jessica, we do have a lot of work to do. i think what we have is, one, top-line messen jing matters. i would say even people who don't agree with us politically would at least agree in regards to jobs and the economy and where we sit today, the republican party's in a much better place to make the appeal with hispanic voters as to the direction of our country. we've got better messengers. marco rubio, susana martinez, brian sandoval. for the committee, what we're doing, by rolling out hispanic victory centers around the country, hispanic victory directors around state parties, and what i'm telling you is we need to communication on the ground in hispanic and latino communities across america. and we haven't -- we've not done a good enough job in doing that. and that's why we're rolling out that now. i think you're going to see that gap shrink over the next few weeks. >> i want to continue this conversation with you but i have to interrupt because we have breaking news now. we will continue it another time. right now, we have breaking news on the secret service prostitution scandal. cnn senior congressional correspondent dana bash is on the phone with us right now. dana, you have been breaking news on this all day. tell us what you have. >> reporter: well, the secret service is, now, making it official that three additional employees have chosen to resign. so three additional employees have chosen to resign. in addition to that, jessica, we know that 11 secret service members were sent home from colombia. now a 12th employee has been implicated. that employee has been placed on administrative leave and his security clearance has been temporarily suspended pending the outcome of the investigation. one of the employees involved has been cleared of misconduct. our understanding is five employees are on administrative leave and the security clearance remains suspended. but the headline is that three additional employees of the secret service have now been forced out. the way they're wording it is "chosen to resign." we all know what that means. six altogether, six agents, or members of the secret service have now lost their jobs because of this scandal. >> dana, you're saying six have lost their jobs because of the scandal. one more implicated in trouble. now one of those we thought was in trouble is now cleared of all wrongdoing? >> exactly. one of those has been cleared of, quote, serious misconduct. but apparently will face appropriate administrative action. unclear what that means and who this person is. our understanding kind of the background of this, as this has been going forward, as we've been talking to sources about how this has shaken out, is that at least one of these secret service members was pushing back pretty hard, saying that he did not do anything wrong, did not do anything to break the rules or the code of the secret service. and it's unclear if this is the particular individual we're t k talking about or not but it is important to note 1 of the 11 original members who were sent home from colombia has been cleared but will face what they call administratie isaction. >> wow, interesting. all of those who left also continue to remain under investigation is my understanding. they remain part of the ongoing inquiry. another piece of news we've learned this hour is the president was faced by director sullivan in the oval office on the latest developments earlier today. dana, you've been doing amazing reporting all day long. you have all the latest. keep us posted if you get more. cnn's dana bash reporting the latest for us. coming up, a prostitution scandal in colombia, a spending scandal at the government services administration. are they personnel issues or political ones? 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[ male announcer ] treat your frequent heartburn by blocking the acid with prilosec otc. and don't get heartburn in the first place! [ male announcer ] one pill a day. 24 hours. zero heartburn. welcome back. here's alison cosick with the latest news you need to know right now. >> a passenger jet slammed into a hillside in pakistan killing 121 people on board and scattering debris across a neighbo