Hit by cars. On cbs this morning. You cant breathe the air, drink the water or survive the surface temperature. [ laughter ]. Yet, still a better venn juue for the summer olympics than rio. Welcome to cbs this morning. President obama will pay tribute today to the five Police Officers killed in last weeks ambush in dallas. More than a thousand people gathered last night at Dallas City Hall for a Candle Light Service. President obama and former president george w. Bush will join those grieving. They will speak at a private memorial for michael smith, Brent Thompson gayle king is at Dallas Police headquarters. Gayle, good morning. Reporter good morning. President obama is scheduled to touch down here in dallas a little after noon local time. The service will take place as investigators piece together how this tragedy unfolded. The private Interfaith Service will take place this afternoon. Gayle, good morning. While crews and security here prepare for todays service, investigators are combing through more than 170 hours of Video Evidence and reviewing 300 statements from officers and witnesses all in an effort to piece together last weeks attack. Were going to follow every lead until its exhausted, until im satisfied that this was a brown says they are questioning Micah Johnsons mother. A search of the house revealed bomb making materials including metal pipes of different chemicals, rifles and body armor. He was very disappointed. In an interview, johnson says she watched her son transform from a fun loving extrovert into a hermit when he returned from afghanistan charged with sexual harassment. It may be the ideal that he thought of our government, of what he thought the military represented. It didnt live up to his expectations. I dont know what to say. Toto anybody to make anything better. James johnson says he could never have foreseen his sons deadly rampage. I love my son with all my heart. I hate what he did. A Law Enforcement source tells cbs news Micah Johnson had hundreds of rounds of ammunition attached to his body when he carried out the attack, an indication he meant to kill more people. 13 officers used force in the standoff. 11 fires their weapons. And two used a robot to detonate a bomb to kill johnson, a decision chief brown has since defended. This wasnt an ethical dilemma for me. Id do it again. When asked what young black men can do to over come their fear of cops chief brown had this to say. Were hiring. Get out that protest line and put an application in. We will help you resolve some of the problems youre protesting about. The fbi is also investigating those cryptic letters rb ridden by the gunman in two places with his own blood during the standoff. The chief also mentioned he and his family have received Death Threats following the attack and that he is considering mandating counselling for his officers so those who need help dont necessarily have to ask for it. Family members offered memories of the fallen officers at an emotional vigil last night at Dallas City Hall. Colleagues displayed portraits of the five officers killed. More than a thousand people gathered at a candle light vigil to morn. Omar, good morning. Good morning. Last nights ceremony was part Memorial Service and also part support group. There were two themes love and unity. We took a gut punch. They punched us good. But we bowed eded our heads, we have it back up were holding it high. More than a thousand people gathered to pay respect to the five offices killed in dallas thursday night. Officer Brent Thompson. Officer patricio. Officer michael krol. Senior corporal lauren aarons. Sergeant michael smith. Average citizens and neighboring Law Enforcement attended the vigil. This is austins police chief. Mutual respect and love for one another. At an Emotional Press Conference monday, the doctors at parkland Memorial Hospital spoke about their experiences treating some of the victims. Were hurting. I think this has rocked some guys to their core who i thought were unshakable. For surgeon Brian Williams, the pain goes beyond dallas. I think about it every day that i was unable to save those cops when they came here that night. It weighs on my mind constantly. This killing, it has to stop. Black men dying and being forgotten, people retaliating against the people that are sworn to defend us we have to come together and end all this. Tomorrow dallas begins to lay their heros to rest. There are Funeral Services set for officer Brent Thompson, loren aarons and Sergeant Michael smith. A lot of people were touched by what Brian Williams had to say. He certainly struck a chord this morning. Thanks a lot. Norah and charlie, i just want to point out exactly where we are. Were standing in front of the Dallas Police headquarters. But underneath all those flowers and balloons are two kruscruisers. One of the notes that stood out to me says when times get hard keep praying for love. I can tell you everywhere you go in this city thats what you feel, a whole lot of love. New revelations on one of the Police Shootings that sparked protest. Officers in baton rouge say alton sterling tried to reach for a gun during their deadly encounter. A search warrant obtained by cbs news says police first tried to use stun guns on sterling. Officers say they saw the butt of a gun in sterlings pocket. They claim he reached for it and they shot him multiple times at close range. Michigan is mourning two retired officers killed yesterday. The gunman wounded a sheriffs deputy and a civilian. Dean, good morning. Reporter good morning. Well, the Berrien County courthouse is closed today while the deputy and the civilian wounded in yesterdays incident are recuperating at a local hospital. The whole incident lasted about five minutes but its likely to have a Lasting Impact on this small community. Shots fired, shots have been fired. Reporter police and surgery crewed rushed to the courthouse minutes after gunfire erupted inside. We do have an officer down in the courthouse. The courthouse was put on lockdown and people in neighboring courtrooms took cover. We heard gunshots. Next thing you knew the judge was taking us in the back yard. Police say 44yearold Larry Darnell gordon tried to escape while being moved from a holding cell to a courtroom. That inmate was able to get the deputys gun away and shoot the deputy and move out from that area and kill the two bailiffs. Third floor, come up the elevator. Officer down there. And then come on over to the right. We have another one. Court bailiffs joseph and ronald died from their gunshot wounds. Kienzle served in the u. S. Army before entering Law Enforcement. They were well respected in our community. They had been in Law Enforcement for over 40 years. Reporter the sheriff told us this morning that the inmates hands were cuffed at the time of the incident but cuffed in front of him allowing him to grab the deputys firearm. Up to that point, the sheriff says, there were no signs that a jailbreak was being planned. Donald trump declared himself the law and order candidate. Trump claimed yesterday that Hillary Clinton considers herself above the law. A new poll this morning shows clintons lead has slunk tohrunk to three points. Major garrett is in indiana where trump campaigns today with a possible Vice President ial pick. Reporter donald trump did not mention by name the two victims of the Police Shootings last week. He did say more work needs to be done. Trump wasnt nearly so vague about Backing Police after a week of tragedy and racial strife. Americas police and Law Enforcement personnel are what separates civilization from total chaos. And the destruction of our country as we know it. Reporter in his first Public Comments since the ambush in dallas, donald trump praised Police Tactics and criticized antipolice sentiment. Its time for our hostility against our police and against all members of Law Enforcement to end and end immediately, right now. Reporter in case anyone missed the message i am the law and order candidate. Reporter trump echoed Richard Nixon whose White House Campaign avowed law and order at a time of civil rights and antiwar activism. As far as this problem of law and order is concerned, i am for law and order. Reporter roger stone a former nixon aide and close confident didnt shy away from the comparison tweeting this photo of trumps face onyx nixons body. Pence is a former congressman with close ties to House Speaker paul ryan and a long History Office cal and social conservatism. Hillary clinton and Bernie Sanders will Campaign Together this morning for the first time. Sanders is expected to endorse clinton at the event in New Hampshire. It comes less than two weeks before the start of the Democratic National convention. Reporter good morning. This joint appearance is the result of weeks of discussions and negotiations in what is still a pretty uneasy alliance. Sanders, im told will congratulate clinton today but he will also thank his own supporters for giving him the leverage to push her and the party to the left. Sanders held out and it worked forcing clinton to change a couple of key proposals to look more like his. We have got to make public colleges and universities tuition free. Reporter clinton now agrees they should be free for almost everyone, all but the richer 20 erest 20 after arguing the plan was too expensive. Some of his ideas just wont work. It doesnt add up. Reporter sanders also won concessions in the new democratic platform which vows for the first time to abolish the Death Penalty and embraces a 15 an Hour National minimum wage. Even though clinton has argued that could be a job killer and prefers 12. If you go to 12 it would be the highest historical average weve ever had. Reporter clinton beat sanders decisively but she and the party need his supporters and their enthusiasm. Still, her leftward shift comes at a point in the campaign when most nominees would be moving to the center. Here we are in mid june and were still standing. Reporter sanders left clinton with little choice. I havent heard her say the things i think need to be said. Reporter now theyre burying the hatchet after a brutal primary. I dont believe that she is qualified. Enough is enough. Reporter that got more real news ahead more personal than anyone expected. Its time to clear the artful campaign that you have been carrying out. Reporter he beat clinton here in New Hampshire by a landslide 22 points. Its still unclear, though charlie, just how much campaigning they will do together. Right now this joint appearance is the only event on their schedule. Britain is getting a new Prime Minister much earlier than expected. Teresa may will replace David Cameron tomorrow. Elizabeth palmer is outside 10 downing street in london where the transition is underway. Reporter good morning, charlie. You can see the front door of 10 downing street behind me. Its not only where a lot of government business takes place, but its also where the Prime Minister actually lives. What you cant see behind the building is the back door where the moving vans have already drawn up to start the changeover. This morning teresa may saluted the cameras as she arrived at 10 downing street for a meeting. But soon shell be moving in both to the house and the top job taking over for Prime MinisterDavid Cameron. Well have a new Prime Minister by wednesday evening. Thank you very much. Reporter that new Prime Minister was surrounded by conservative parliamentarians as she accepted the post. I am honored and humbled to have been chosen by the conservative party to become its leader. Reporter her biggest challenge will be managing brexit, britains controversial departure from the european union. Brexit means brexit. Reporter but does it . Soon to be Prime Minister may voted against brexit in the referendum. And theres speculation she may try to negotiate a compromise. Whatever her strategy, mays colleagues agree shell be a steely negotiator. For the past six years she has been the u. K. s home secretary. What britains call the interior minister. In charge of policing immigration and counter terrorism. Shes earned herself a reputation as a tough legislator. Not charismatic maybe, but disciplined and good on detail. Inevitably recalling britains last female Prime MinisterMargaret Thatcher who left office in 1990 26 years ago. And teresa mays first pry or the priority, they want talks on britain leaving to start immediately. Teresa may has already said not a chance. There will be nothing happening until at least the new year. Emergency room doctors say the Police Ambush in dallas was one of the most difficult days of their lives. Ahead two drama surgeons show u the battle over legalizing pot is reachina ti the battle over legalizing pot is reaching a tipping point. Were going to show you how voters here could set up a nationwide change reaction over recreational use. The news is back in the morning right here on cbs this morning. Here in the morning right here on cbs this morning. Announcer this portion of cbs this morning sponsored by persil pro clean laundry detergent. Experience premium clean. It beat every single detergent tested. 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