From Dallas Police headquarters where chief david brown is holding a briefing at this hour. The live desk is watching the News Conference and well be updated throughout the newscast. Meanwhile, chief brown said yesterday that micah johnson, who man who killed five Dallas Police officers, had larger attack plans. The investigation into johnsons attack is still ongoing and much remains unknown, including how johnson got his weapons. Right now federal agents are trying to trace the origin of a militarystyle semiautomatic rifle. And as that investigation continues, for the first time today, many key streets and buildings in Downtown Dallas will reopen. Hundreds of people will gather in dallas tomorrow for an Interfaith Memorial Service. President obama and former president george w. Bush will speak at the service. Edward lawrence has the latest. Reporter good morning, barbara. The president was briefed this morning about the latest on the investigation in the dallas attack that killed five Police Officers. The president now turns justice that black lives Matter Movement wants with healing the nation. He will travel on tuesday to an Interfaith Memorial Service for the victims of the shootings in dallas. President george w. Bush will be there, along with Vice President joe biden. The Dallas Police chief says the gunman, micah johnson, had sinister motives for his murder spree. He adds the suspect practiced with explosives in his backyard and had enough to be, quote, devastating for the city. Now, meanwhile over the weekend protests erupted in the states eechktly affected by police shootings, including minnesota and louisiana. They were joined by protests here in washington, d. C. , also east coast to west coast. The president still facing questions about the feeling among Law Enforcement that he prefers or favors the activists over Police Officers. Reporting in washington on capitol hill, edward lawrence. Now back to you. Edward, thank you. Heres more on the protests edward just mentioned. More than 300 people were arr tense protests around the country. In atlanta, protesters held sitins that blocked roads. The black lives matter group crossed the Police Barricade and went onto interstate 40 in memphis. Demonstrators brought highway traffic to a stand still by blocking a bridge. In louisiana, hundreds of protesters confronted police in riot gear in the streets of baton rouge, all of this in response to the shooting deaths of two black men by Police Officers last week. Protests in our area this weekend did not lead to any arrests. There were four different events in our area in response to the shootings yesterday. At the africanamerican civil war memorial, members and supporters of the black lives matter group rallied before marching. At freedom plaza, hundreds attended a prayer service. At rfk stadium in southeast, demonstrators addressed brutality. At brookland political leaders to discuss necessary political change. The last hours of metros safe track surge are ending now. Surge four starts tomorrow. Megan mcgrath is live at the crystal city metro station, which will be shut down. Hi, megan. Reporter well, good morning. Yeah, the next phase of work still happening on the yellow and blue lines, but this time just in a different spot. Beginning tomorrow morning the crystal city metro station will be closed. Closed for about a week. People trying to get to Reagan National from d. C. Or rosland will have to take a shuttle bus. Same line, different section. Metros safetrack surge four gets under way tomorrow morning. The work zone is now north of Reagan National airport on the yellow and blue lines. We either go to Pentagon City or get on the bus. Reporter riders were given pamphlets this mornin explaining the impact. Its a complete shutdown between Reagan National airport and Pentagon City, which means the crystal city station will be closed. Just take the bus from my location instead of stopping here, were going to get off at Pentagon City. So its not going to be much of an inconvenience. Reporter shuttle buses are an alternative. The work is expected to last seven days, wrapping up on the 18th. Closure means people coming from d. C. Or rosland wont be able to get to the airport by rail, theyll have to hop a bus. The ongoing work has presented some challenges, but riders seem pretty understanding. A lot of the regulars i see no longer riding, but i think they have done a pretty good job handling it so far. Of course theres a lot left to go, but well see how it goes. Reporter now, if youre heading into d. C. From the south, the folks at metro would like you to offload at the braddock road station and take a shuttle bus from there. Passengers riding the rails all the way to Reagan National. Again, that is if youre coming from the south. Back to you all in the studio. Megan, thank you. New today, d. C. Police say a 27yearold man is the person who died in a shooting. Well have that in just a moment. First lets check in with storm team 4 meteorologist tom kierein. Gorgeous monday under way. Heres a live view from our storm team 4 prince georges camera, overlooking national harbor. Four things to know for the week ahead. Its going to be turning more humid beginning tomorrow. We also have an increasing storm chance during mainly the afternoon on wednesday. Then its going to be getting hotter thursday and friday and looks like a hot and humid weekend is on the way, so enjoy this day while you can. Right now temperatures are in the comfort zone, absolutely gorgeous. Were in the upper 70s. Most of the region from the mountains to the bay. Reagan national up to 81 degrees. We dont have any showers district, the bay, and on the Eastern Shore at the atlantic beaches. A look at our next chance for some storms coming in. Well look at the heat wave on the way too. Thats coming up in just a few minutes. All right, tom. Now to that story in d. C. Police say a 27yearold man is the person who died in a shooting yesterday morning in northwest washington. Detectives first went to flagler place after reports of gunshots around 4 30 in the morning. Police say they found seth rich hurt but conscious. He later died at the hospital. Officers are offering a 25,000 reward to anyone who can help them make an arrest in this investigation. If you are in an emergency, you shouldnt have any problems calling 911 in Montgomery County right now. That wasnt the case overnight. The system was down for several hours because of an internal issue. That meant to get help you had to call 311 or look up the number of your local police or fire station. Montgomery county says the problem is totally resolved and that you should only use those busy signal on the line. We just learned that hundreds of more u. S. Troops are going to iraq. U. S. Defense secretary ash carter saying that 560 more troops will deploy to the country to help iraqi forces. You are looking at some video taken earlier of carter arriving in the country. This was an unannounced visit. He said this morning that the troops will help with infrastructure as well as Logistical Support at a base that is going to be built to support that push to take back mosul from the islamic state. We are hoping to get more details shortly, this news coming just days after president obama said american troops will remain in the country of afghanistan longer than originally planned. Barbara. Thank you, angie. Turning now to the race for the white house. In just a couple of hours donald trump will speak in virginia beach. Hes expected to talk about veterans reform at that event. New jersey governor chris christie, a potential trump vp pi w that event. The Republican National convention now just one week away, speculation is mounting over who donald trump will pick at his running mate. Nbcs Peter Alexander has more. Reporter its decision week for donald trump. With the Republican Convention in cleveland just seven days out, trumps highly anticipated vp pick could come any time now. Could trump go with another political outsider . The latest contender, retired Army Lieutenant general michael flynn. He brings National Security expertise, but also supports abortion rights. A position alarming to many republicans. I think for women, these are difficult issues, but i think women have to be able to choose. Reporter one antiabortion group immediately rejecting that view as unacceptable, saying flynn has disqualified himself from consideration. Further complicating matters, flynn is a registered democrat. Also in the running, new jersey governor chris christie, providing trump backup at a and indiana governor mike pence, likely to join trump tomorrow outside indianapolis. Newt gingrich this weekend telling the ap if hes asked, its not an automatic yes. Meanwhile following the dallas shootings, trumps response initially more restrained and inclusive. We must stabbnd isnt solidarity with Law Enforcement. But later attacking president obama, citing his comment that the u. S. Isnt as divided as some suggest, arguing that the president is living in a world of make believe. Trump also blaming president obama and Hillary Clinton for raek leadership. We are a divided nation. In cleveland ahead of next weeks convention, police are planning to further tighten security. The events in dallas kind of heightened everyones awareness. Reporter the citys chief promising enough officers are ready in case of violence. And that was nbcs Peter Alexander reporting. Bernie sanders is expected to endorse Hillary Clinton at an event tomorrow in new hampshire. They will rally supporters together at an event in portsmouth. This comes after sanders was able to get several of his top issues included in the democratic partys platform over the weekend. Right now, hundreds of volunteers are at Arlington National cemetery. The major project landscapers are taking on today. And team usa. We will introduce you to the five talented athletes who make up the u. S. Womens gymnastics team, which may be the hardest olympic team to qualy for. Staify woman i have a masurprise for you. Are you . Man you have a surprise for me . Narrator at dominion, 1 in 5 new hires is a veteran. And when theyre away, they miss out on a lot. But they wont miss out on financial support. And their dominion salary, and continue benefits for them and their families. Why do we do it . Because our vets sacrifice enough. Dominion. Depend on us for more than energy. Stand by me. We have a Big Development in the brexit story. Prime minister David Cameron just announcing that he will resign this wednesday. Home secretary theresa may, a conservative, will succeed him. She could replace him as soon as this week. Cameron saying hes going to attend a final session in the house of commons before going to the queen and tendering his resignation. It is the queen who has the formal role to appoint the new leader. Cameron said he would step down after the country voted earlier this month to leave the european union. Barbara, thats the latest from the live desk. Frightening video out of florida where a plane crashed into a lake. The plane is still in the water near orlando right now. The pilot and his 9yearold daughter were both on board and they both had only minor injuries. This happened last week but the faa says they cant investigate until the planes owner retrieves the plane from the water. Right now at Arlington National cemetery, a huge day of Service Project for hundreds of volunteers and veterans caring for some of our nations most hallowed grounds. More than 400 landscaping professionals from around the country are working on the grass, the plants and even the irrigation system. Many of the landscapers are veterans themselves. This event of beautifying and restoring the cemetery has been going on for 20 years. Right now lieutenant brian rice is back in court and fellow officers could take the stand during his trial. He is the highest ranking officer to stand trial in the death of freddie gray. Gray died, youll remember, from a broken neck while riding in the back of a Police Transport van last year. So far, two of the six officers accused in the case have bee one of those, edward nero, has called to testify in the rice case. Officer porter, whose trial ended in a hung jury, could also take the stand. Police have a man in custody today charged in the murder of his estranged wife. 41yearold daron odom turned himself in sunday. He faces murder charges in the shooting death of jemilla odom. Police arrived and found the victim in a car with several gunshot wounds. She was pronounced dead at the scene. Charged in the death of a 62yearold woman. This happen friday in landover hills. When Police Arrived on the scene, they found lenice suffering from trauma to her upper board. Her neighbor says this is an example of why members of the community should look out for community we have to be more vigilant as neighbors. Police say the preliminary investigation shows the motive was robbery. Police believe speed may have played a role in a deadly car crash. This car went off the road and plunged into the Potomac River right near the roosevelt bridge sunday morning. Three people were in the car. The driver and one passenger died. Another passenger managed to escape, swim to shore and call police. Police are hoping the lone survivor will help them figure out what happened. We have just four weeks to go until rio, and microbiologists in Rio De Janeiro say they have detected superbacteria in the waters for athletes that will be competing. Its just another new concern on top of worries about the zika virus and security at the games. But at Miguel Almaguer reports, the city and olympic Officials Say there is nothing to fear. Reporter renowned for its incredible raw beauty, raw sewage most spectacular landmarks. Here in the bay where sailors from around the world will soon compete, microbiologists say they have discovered a dangerous drugresistant superbacteria. How dangerous are the superbacterias to humans. We dont know the real risk to the people because we need more studies. Reporter experts say they believe the superbacteria entered rios waterways when waste was discharged from local hospitals. The International OlympicCommittee Says the city has worked to ensure athletes will be safe, improving the quality of water, including using ecoboat to collect waste. This as the ongoing threat of the zika virus has prompted some athletes to skip the games. Public health isnt the only concern here. As more than half a Million People get set to visit rio. Police and firefighters here have threatened to go because of budget cuts, but the government promises the games will be safe. This weekend a show of force. Troops in Armored Vehicles out on the street, all part of a training exercise. 85,000 soldiers and police will soon be out to secure the games. Rio is going to be the safest place on earth to be by august. This is the maiden place, the maiden city. Ever foreigner that comes here falls in love with rio. Reporter the world is watching rio, with the games just 26 days away. Miguel almaguer, Rio De Janeiro. Weve just learned another golfer is withdrawing from the olympics. Jordan spieth just made the announcement from the beneficiabritish open. That means it will not include the top four players in the world, jason day, dustin johnson, Jordan Spieth and rory mcilroy because of the concern for now to the athletes that will compete in rio. Youll see some familiar faces representing the u. S. Womens gymnastics team. Look at her sticking that landing. That is Gold MedalistGabby Douglas and aly raisman who will make the team again. Simone biles, Laurie Hernandez and Madison Kocian round out the new fierce five. All the girls sat down with Natalie Morales to talk about this huge accomplishment. Representing the usa is so amazing. Going to two olympics is wow. Team competition is my favorite because to reach your goal, you guys can cherish that moment together. Together i think were stronger than individually. What a team. Douglas and raisman are the first gym nnasts to make backtoback olympic teams since 20 00. Well have to miss the nationals in action this week, but many consid event the most fun batting practice of the season. Well tell you about the hitting contest that kicks off the allstar break. And the people being held responsible for a massi vew hundreds of people who evacuated because of a big fire near los angeles are getting to go home today. Firefighters say the sage fire has been about 50 contained now. Its covering more than theres also a big fire burning in colorado right now. Over the weekend two campers were