Normalcy this afternoon but there are counsellors and chaplins on hand counseling those people who need help who were emotionally upset by seeing police here, relieving the nightmare of the horror of the shootings of two years ago. [ sirens ] the emergency call came in at 7 29 a. M. , prompting this immediate response. Heavily armed local and federal law officers converging on the navy yard, which was put on lockdown. Employees sheltering in place. The initial call came from someone inside the navy yard who said they thought they heard gunshots. We did take every call seriously and when we heard a call go out for a potential active shooter we brought the resources. Reporter the report of a potential active shooter turned out not to be true but Officials Say the caller did the right thing by alerting police. The two and a halfhour incident closed m street between south capitol and 11th street southeast. Other buildings with federal agencies and even some schools were closed as well. Officers at the navy yard searched building 197, interviewing employees. Emotions ran high because thats the same building where in 2013 a lone gunman killed 12 people. But today the investigation revealed there was no gunman, no shots fired, no one was hurt. Im very proud of all of the officials that anticipated the call. We know that there have been a lot of Lessons Learned from that previous incident fatality here at the navy yard and we have found that there has been a clear, coordinated and convincing response to the scene. Reporter the navy along with the d. C. Police department and federal agencies will hold an afteraction meeting to debrief and see what went right here today and what procedures could be improved for future joint police operations. Thats the latest from the Washington Navy yard live. Chris gordon news4. Many of the employees inside building 197 this morning had just recently gone back to that building. News4s Scott Macfarlane joins us now and scott, big changes at the Naval Sea Systems Command center since september 2013. A lot of those work he is just returned to their offices a few weeks ago. After the shootings, the navy gutted building 197, changed the look, the layout, some of the security setup, too changed the furniture and paint cover, in part to make it easier for traumatized workers to return many of the 3,000 employees have been temporarily relocateded to an Old Coast Guard building in southwest d. C. They did that during all those renovation renovation. The navy granted special permission for some workers to set up offices outside building 197 as recently so they never have to return to that old shooting site. The military used 400 counselors and Mental Health providers to help employees cope with that tragedy and some of those coupe sellers, pat, were made available again to workers today, as chris gordon just told you. All right, Scott Macfarlane, thanks, scott. Our coverage of the navy yard lockdown continues on the nbc washington app. Watch the full News Conference with mayor bowser and police chief cathy lanier. Following breaking news on a bad accident at the world police and fire games. Three cyclists who were competing in a bike race got into an accident during that race and are seriously hurt. In fact police described them as having lifethreatening injuries. This happened during a competition at the Prince William forest park. Chopper4 is over that park in triangle virginia. This happened this afternoon and Prince William county police are the ones investigating. They tell us they are still piecing together what happened. We have got a news crew headed to try to get the latest. We will bring you any updates on who was hurt and how this happened just as soon as we get them. The man charged with the d. C. Mansion murders has just fired his attorney. Darron wint was supposed to have a preliminary hearing today but just before it got started, he informed the judge he wanted to change his defense team. This is the second time wint is changing lawyers. Now, he is going to be represented by the same public defender that originally took on his case. Not too long ago wints now former attorneys spoke about why wint fired him. He has decided that there is a difference in opinion on how we wanted to move forward with this. I understand why he decided to do what he did and im absolutely confident that pds will more than adequately represent him. Because of the change, wints preliminary hearing has been postponed but he will be back in court later this month. We have only seep a shower or two today, but we havent seep much of the sun. Meteorologist Veronica Johnson is in the storm center right now. Vj, is this rain going to be moving out in time for the Holiday Weekend . Going to be moving through, lets just same have these Little Pockets of showers at times and timing is going to be really everything, which is why its so important to stay tuned to the forecast, make sure you download the nbc washington app because when theres anything on radar like today, you can always track it right around your neighborhood when its going to be moving through. Right now, got some light showers around bowie, toward clinton. These are all pushing eastward. So away from 95 and route 1, right along route 50 to annapolis. Here is where i thought we would have those thunderstorms ben we talked about some thunderstorm probabilities yesterday around southern maryland. That front has been south of our area around richmond. Thats where the storms have stayed but we have been locked in with the clouds, the average high, 88 today feeling more like a may day temperatures in the mid and upper 70s this evening, seeing a little bit of clearing but then clouds will be back, rain will be back, too. In fact some heavy rain, show you in a couple minutes when that heavy rain will be moving in. Guys . Thanks, veronica. A scare for some air passengers on their way to washington this morning a passenger on a flight from st. Louis made threatening remarks. That caused the crew to make an Emergency Landing in columbus, ohio. Authorities met the plane on the run way there and detained that passenger. The others were taken to the terminal. Right now all run ways have been reopened. As we head into the holiday, the fbi is Warning Police across the country, be especially vigilant around large crowds. Officials say there are no specific Credible Threats but this year the fourth falls within the muslim holy month of ramadan and isis has been calling on militants to attack the west during this period. The terrorist group has been recruiting young people in western countries for the past six months and supporters are sending out 60,000 tweets a day. They are selfradicalized, selforganized people on social media. Are we concerned about that . Absolutely. We are concerned about t. Police here in washington say the celebration on the mall will be well patrolled and well monitored. Steve handelsman is wrapping up his report with the latest on security. We will have the latest for you in our second half hour. Breaking this afternoon, in the race for the White House Former virginia senator jim webb is running. He released a statement a short time ago and acknowledged that he is facing an uphill battle. In the latest nbc news wall street journal poll, webb is at about 4 challenging hillary clinton, Bernie SandersMartin Omalley and Lincoln Chafee for the democratic nomination. A mysterious disappearance has taken a sinister turn. A couple turns up dead. Who investigators are questioning and what they think happened. Caught redhanded. The surprise suspect arrested with hundreds of dollars of lacking ahead to tomorrow, another cloudy overcast day in store. Some drizzle possible during the morning hours. Az we get into the afternoon hours, temperatures only warm into the mid to upper 70s thats about 10 degrees below normal. By the afternoon and evening hours, some areas of rain are possible. Some heavy rains are possible in spots overnight tomorrow. So friday night into saturday morning. But travel weather tomorrow morning, 9 a. M. , looking good in the midatlantic, as we work our way into the midday and afternoon hours. Some scattered showers to contend. Coming up in about less than ten minutes, vj is going to have a look to the fireworks forecast. What you can expect for your saturday evening. Thanks, amelia. A thick plume of toxic smoke is spewing out of a derailed train in tennessee. One of the cars on the csx train went off the tracks overnight about 15 miles from knoxville. The train was carrying a highly toxic and flammable substance which cause fire. Now, the fumes are dangerous to breathe, so First Responders had to wake up 5,000 people in the middle of the night and tell them to get out of their homes. 30 people had to go to the hospital after suffering some breathing problems from those fumes and residents may not be able to go home until tomorrow. Survivors describe sheer panic after a ferry capsized in the philippines. Nearly 200 people were on the ferry when it flipped over. At least 36 people were killed. The Philippine Coast guard and nearby fishermen rescued more than 100 people. As many as 20 are still missing. At least three americans are among the survivors. One told the Associated Press that the ferry turned over so fast, there wasnt enough time to jump clear of the ship and passengers were screaming in terror. We are working a developing story in the southwest in the search for a missing couple. Theres been a gruesome discovery and now detectives are converging on a neighbors home. Workers at the navy yard thought they were reliving the tragedy of 2013. Our Team Coverage of the navy yard lockdown continues now. News4s pat collins talked with some of the people who worked on that compound including one who was there during the 2013 mass shooting. Had to be an incredibly frightening day for folks down there today, pat. Reporter you got to feel for the people of the navy yard. It seems they were just getting back to some sort of normalcy after that deadly attack two years ago and then today. The big shooting scare. Another lockdown and for some people flashbacks. When people filed out of the navy yard today they did it with a sense of purpose. You see they had survived another lockdown. They had weathered a shooting scare. Some, like don whitaker tried to take it in stride. He was here for that deadly attack back in 2013. What was it like in there . Oh just like the last one lockdown in a different building. Scary . Oh yeah. You lose coworkers. What did you do . Tried to go back to work. Is it hard coming to work at the navy yard with all of this . No, its harder to be outside the navy yard theres more violence out here than there is in here. Reporter this is andy. This is andys first week on the job. I felt pretty secure actually, once they put in the lockdown. Were you afraid . Um a prehelp sive. Reporter elvira just started working here too. I was very, very scared. My first time. I was crying. Reporter it turned out to be a false alarm . Yeah, a false alarm. Worried about coming back to work next week . I dont know. Its hard to decide. Reporter cock back at 5 00, i want you to meet crisp crawford. She is a veteran of navy yard lockups and boy, does she have a story to tell. I will see you at 5 00. Thanks, pat. Thats one i think we all really want to hear. A Russian Police officer has been ordered to surrender his passport after Fairfax CountyPolice Arrested him from shoplifting from tysons galleria. He is a member of russias Ice Hockey Team and in up to to play in the world police and fire games. Tuesday night Loss Prevention officer called police after he caught the man stealing hundreds of dollars of clothes at macys. He lost his credentials for the games and a public defender was appointed to represent him next week. Most workers in Montgomery County will soon be getting paid sick leave. A bill signed today requires companies to provide one hour of sick leave for every 30 hours of work, a maximum of seven sick days every year. Montgomery county is among the first jurisdictions in the nation to require sick leave. The law takes effect in october of next year. Maryland governor larry hogan appears to be in good spirits on his first day back after chemotherapy. Hogan posted these pictures on facebook and twitter at him at work with his staff today he included the message, it feels great to be back in an nap poelism hogan spent five days undergoing treatment for nonhodge kips lymphoma. He was diagnosed ten days ago. While his cancer is advanced, his prognosis is good. The search for a missing couple has come to a tragic end in arizona and one of their neighbors is now under arrest. Police found the bodies of mike and tina car reek ya, they were in the backyard of a mans home. The man is charged with two counts of firstdegree murder. The couple is in their early 40s and disappeared ten days ago. Authorities in the phoenix area say they are confident they have the right person in custody. Essentially, he confessed. Essentially, he said, all this information about killing mike and tina. The accused killer tells investigators he has been doing meth with the couple for a couple years now but police warn they cannot yet cop firm those claims. Who can forget the images from the Deepwater Horizon Oil spill . Back in april 2010 when an explosion on the oil rig killed 11 workers and dumped oil in know the gulf of mexico for 87 days. By the time the leak was capped, 80000 galloned spilled into the gulf. Louisiana texas mississippi alabama and florida settled claims and more than 400 local government entities. I remember being down there. Make a lot of folks down this happy in those fishing communities especially. Here, i guess rain cloudy. Wasnt a great one out there today. Not making a whole lot of folks here happy. But you still have time veronica to make us smile. Right. Change it, right . Get a little bit of sunshine in here. I do think on saturday fourth of july, we are going to be seeing some sunshine. But again, you got to plan, because there are going to be areas that will have some rain around and at times during the day on saturday we are going to see some showers. Im going to show you in just a moment here. Showers showing up first on storm team radar, moving through, nothing too heavy. This time tomorrow afternoon, more showers around the area almost a carbon copytype day coming our way. For friday evening and friday night, more moderate rain and even some embedded thunderstorms expected for friday night, saturday morning. So your impact forecast for tomorrow, the weather will have a low to moderate impact on your day. Gray and cool again almost a carbon copy day once more, spotty showers coming through during the bulk of the Daylight Hours tomorrow. Here is a look at the satellite and radar, whats going on this weather system that stalled out way down to our south, he one area of low pressure moving off the coast. As it does so tonight, a little low pressure will come along and produce that rain for tomorrow. As it gets closer to us going to take us to this the heavier the higher chance of rain. Again, by evening, your road impacts moderate. But for afternoon tomorrow i think we have gotvooie6k hybghkn showers, and then as we get into Early Saturday Morning thats when we could have the real heavy rain. So your fourth of july forecast here will take you hour by hour for the afternoon and evening hours. 6 p. M. , scattered shower possible at 79 could have a storm around at 9 p. M. But its only a 20 to 30 chance, which is why tell everybody, just put that app on your phone, the nbc washington app, you can see where the chances will be popping up. Right now trending toward the drier. Amelia segal has the beach forecast in a few minutes. Thanks veronica. Seven shark attacks now confirmed on the east coast and the popular beach for locals is one of the hotspots. We are live with the warnings along the North Carolina shoreline. This is a story i shared on my Facebook Page an hour ago, if you are headed to the beach this weekend, be aware sharks could be lurking in popular swimming areas. Beaches are still open despite the seventh shark attack in the past three weeks. Nbcs sarah daloff is live from the outer banks where tourists are on guard. Sarah, are they in the water on on the beach . Reporter oh, yeah, people are still getting in the water chris and pat but fair to say they are very alert and keeping an eye on whatever may lurk below. This is one of the busiest tourism weekends of the year, a weekend that coincides with what experts describe as a perfect storm of conditions for sharks. I have a patient who has been bitten. Reporter just the latest in a series of shark attacks. We have a subjects that has an injury from possible shark. Reporter a 68yearold man built. While swimming in waistdeep water of ocracoke island. You can see a pretty decent size, baseballsized gash taken out of his knee. Reporter the victim was able to swim to shore before being airlifted to a nearby hospital there has been an alarming increase in the number of shark attacks along the North Carolina coast, seven in three weeks. Patrick authority. Of charlotte suffered serious injuries after an encounter with a shark. I felt myself, you know, instinctively punching the shark, realizing that a shark is upon me,ss attacking me. This could be it. Reporter in less than a month, 8yearold brady noise suffered minor injuries but two teenagers each lost arms after being bitten. It is unusual. The water has been a little warm this year. The sharks are i think, heading north. Reporter experts say a number of factors could