Security is visible for the holidays. And in boston, lining the charles river, a half Million People will watch the fireworks. City Officials Say they are a bit nervous. Obviously, everyones concerns have been raised because of all the isis activity thats going around. Reporter isis is urging its sympathizers to attack in the u. S. The fbi reports no specific plots uncovered, but in pittsburgh, the cops are alert. The lone wolftype thing, there is generally no precursor warning because of the very nature of it. Reporter heres a warning, the roads are jammed. This is new jersey on the way to the beach, the heaviest holiday traffic in eight years. Heres denver. Cheap gas has more people driving. Prices today are almost 90 cents per gallon lower than they were last year. Reporter jammed roads . Check. Fear of terrorism . Check. Millions having holiday fun . Check. In pittsburgh theres been so much rain, they say their big problem is they had to cancel their annual regatta. And Boston Police seriously said one of their biggest goals this year is to get people to stop burping up so many decks with their barbecue grills. Im steve handlesman, news4. Thanks, steve. Now to the weather all eyes on the skies as we look ahead to the fourth of july forecast. We know theres a chance for rain tomorrow, but vjs here to pinpoint the exact timing. Vj . Thats right. A chance for rain and of course that means for us no bashout is expected. We are talking about some brief interruptions from the rain. Here is what we have got going on right now, a little bit of rain coming through our area currently, light showers moving east and northeastward they have been pulling out of areas of Fauquier County through Prince William through 66. Fairfax wet with the showers and wet weather reported currently inside the beltway, around alexandria, of course the ballgame could be a little wet. Folks probably pulling their ponchos out about now with the cloud cover now, going to see the temperatures start to drop. We got into the low 80s, mid70s by 9 00. Still a chance of an isolated shower by 9 00, a better chance of rain past 11 p. M. And midnight. So, we are stacked heavy tomorrow during the early part of the day with rain, but as we get into the day tomorrow, the after into, the evening hours, we are going to start trending a little drier. Drier and drier. By fireworks time 8 to 9 00 mostly dry temperature of 75 degrees. Looking pretty good n a couple minutes, i will be bab to show what you location, what neighborhoods will see the higher rainfall totals tomorrow. Thats all in a few. Thanks, vj. Its a tragedy that no parent should every undeer but for the second time a mother is making plans to bury a son. Her child was shot and killed last night on North Fayette street in alexandria, becoming the first murder of the year for that city. News4s chris gordon was there as the victims family drove to the crime scene, hooklooking for answers. Reporter i received this tweet within the past hour about shakken elliottibbs death. It says shakken was one of my former students and footballeedom high school in woodbridge. It breaks my heart. Shakkens girlfriend tells me that he had a big smile and would help just about anyone. He was there for everybody. If this happened to him, this aint right. Its not right at all. Reporter 22yearold shakken elliot tibb was fatally shot along North Fayette street at 11 30 last night after hanging out with his cousins. He was leaving to take a metro to meet his mother at the springfield station and go home to woodbridge together. Today his mother came to see the spot were her sons life ended. He loved me to death. I know that. Very protective of me. I knew that and i always knew that he was there for me. Reporter his girlfriend, asiana jones, says their dreams died last night. We had a lot of plans. He was supposed to finish school. We was supposed to get married. Have kids. All that. And now its just gone. Reporter Alexandria Police will not discuss the possible motive for this murder and need help solving it with an arrest. Its warmer weather. It is a holiday. We are sure that there were people out who viewed this crime. Reporter those closes to shakken cant figure out why anyone would kill him. I just talked to him literally 30 minutes before he was shot. Like my mama coming to pick us up and they told me he is gone. That dont make no sense. Reporter our Northern Virginia bureau chief julie carey emailed me saying that this portion of the city often has reports of shots fired. The Alexandria Police department is planning a Public Meeting this monday evening at 7 p. M. At charles houston recreation center, to address the communitys concerns about this murder. Reporting from alexandria, chris gordon, news4. The hunt for a killer continues in the district as we learn more about a man who was found dead inside a burning trash can. Police identified the victim as Heineken Mcneil of seethe. He was shot and then dumped in the trash off holbrook terrace in the trinidad neighborhood on tuesday. There is a 25,000 reward for information that leads to a conviction in this case. And there have been 68 murders in the District Of Columbia this year. In just a couple hours hundreds of First Responders will come together to honor a man they hardly knew. A memorial is already forming for investigator carlos silva. He came here from brazil to take part in the world police and fire games but he never finished his bike race. Now the brother and sisterhood that was formed at the games is trying to cope with his death. News4s Zachary Kiesch reports. [ whistle ] its where everybody from around the world the Police Officers and firefighters come together and do various events and compete and it is all about fun. You can cheer everybody on. Reporter 12,000 competitors, 70 countries, ten days of world police and fire games but the cycling death of carlos silva, Police Investigator from brazil one major loss. Yeah. Its sad. You wouldnt expect it to happen, but i guess he was going down hill, his friend i dont know if it was his tire or somebody elses three guys together front tire blew. And, you know, who knows. Reporter the accident happened when a cyclist blew a tire and lost control during a time trial in Prince William forest park. Shauna quigley august proud winner of multiple medals from British Columbia couldnt separate her wins from such a loss. One of my silvers is actually in a team we called ourselves the brazil plus one and i was a plus one and i swam with three brazilian women. I know those girls are going to be devastated. Reporter the games are back on today and despite the tragic death the games organizers and athletes are keeping the spirit of competition in the memory of carlos silva alive, hoping for the recovery of the two other cyclists. Reporting in Northern Virginia, Zachary Kiesch, news4. We waupdate to you a breaking news story we brought you first at 4 00, crews are on the scene of a house fire in Prince Georges County. We just got this video from the scene. That singlefamily home is on stone haul drive not too far from i95. Smoke alarms alerted two people inside that the home that it was time to escape. So far no injuries are reported. Just into our newsroom, crews have fixed that massive water main break in anne arundel but tens of thousands are still without water. Crews spent nearly 16 hours repairing that break. It shut off water to customers in laurel, maryland. In our next half hour a live report from the scene as Meagan Fitzgerald will tell us just how long it is going to take for the water to come back on. Thats coming up at 6 30. And no more water problems tonight in wheaten after two and a half million gallons poured into the street this week. Georgia avenue had to be shut down in both directions. Crews spent nearly two days fixing that problem. The road reopened to all traffic late last night much a woman who tried to crash through the gates at the cia wouldnt have to go to prison. A judge has sentenced tunisia davis to probation. He has also ordered her not to carry a gun or, again, to try to enter a cia facility. News4 reported davis drove to Langley Center in april and then threatened to shoot and kill a security officer. Investigators say she also tried to begin access to the secure headquarters of the National Security agency that same day. California advice pleaded davis pleaded guilty to interfering with government functions and a judge ordered her to get a Mental Health exam before he happened down the sentence. Former fbi agent matt lowry had a secret he was stealing heroin from evidence to support his own habit. Earlier this year, lowry pleaded guilty to tampering with evidence and a lot of the people he put away is now become on the street. Nbcs kate snow sat down with him to learn how his downward spiral started. Something, you know, clicked in my head let me just take a little bit to start off these withdrawals. And then i will figure out later, you know, how am i gonna get through this . Lowry has been clean for more than a year. He is now out on bond but still faces seven to ten years in prison. He is hoping this interview is going to help a lot of other people battling addiction. You can see kates full interview on nightly news with lester holt at 7 00. New fears after a recent rash of shark attacks. Why some were staying on dry land this Holiday Weekend. A maryland mom admits she did give kids pot at a Birthday Party, but didnt stop there. What she is accused of teaching a 6yearold to do that led to her arrest. The generous effort from these folks, making a house a home for a family of 13 forced out by a fire. Tonight, there are more shark sightings off the North Carolina coastline. Two men were fishing at Kill Devil Hills today when they hooked this. This you can see the crowds gathering around the big fish. The shark measured about 7 1 2 feet and it was released. This weekend will be the busiest for North Carolina beaches. Seven shark attacks in the past three weeks and nbcs sara daloff is monitoring the situation from wrightsville beach. Reporter waves of visitors are expected along the coast this weekend, but after a string of people bitten by sharks off the coast of North Carolina, worry of more potential attacks are keeping some close to the shore. I dont normally worry about this at all, but because of the frequency and the and the distribution of bites, im concerned. First responders respond to lifeguard beach. We have a subject have an injury from possible shark. Reporter the latest victim, andrew costello, now in Good Condition after a shark bit him on the leg, hip and both hands. It was North Carolinas seventh shark encounter in three weeks, a record. But this weekend, officials have decided not to close any beaches. I am reviewing, also with Public Safety personnel, to make sure that we have the personnel in place to respond to any potential emergency. Reporter in wrightsville beach, so far, no dangerous encounters. Officials and vacationers both hoping it stays that way through the Holiday Weekend. But even experienced surfers are extra alert for potential danger. More likely less likely to go out, even to let the kid goes out and paddle out by themselves. We will go in the water but we are a little nervous. Reporter watchful eyes on the water and what could lie beneath the service. In wrightsville beach, North Carolina, sara daloff, nbc news. And take a look at this. It is the bay bridge. Come on, lets go ive never seen it we could roller skate across it. If you are heading over there to the maryland side for the fourth of july they are not heading there right now, apparently. President obama was behind the wheel today, at least on the golf course. The commander in chief played a round of golf at Columbia Country Club in chevy chase filling out his foursome aides and associates joe paulson, mitch stew bart and marvin nicholson. They will host military families at the white house where they will have a barbecue and a fantastic view of those fireworks. Yeah. And today was a beautiful day. Tomorrow is going to be about timing, veronica. All about timing. I dont want anyone to panic early in the day tomorrow you see the rain come through. Stay like that throughout the day. See a little bit of sunshine come our way tomorrow morning. Scattered thunderstorms. Got deep an eye on the sky, nbc washington app, you could track it right there live on your phone. The showers moving through and when they are going to get out of your neighborhood. Right now, w showers moving through, so your evening forecast first and what you can expect. A couple of stray little light showers coming through right now. Better chance of rain late, around 10 to 11 p. M. And after midnight. Your temps around 80 degrees, low 70s by 10 to 11 p. M. Here is the rain im talking about, you can see it here coming into frederick, coming into d. C. And around fredericksburg, all advancing eastward. This is the rain we thought would be coming through our area a little earlier today, taking some time, see it there coming right across 66 and into d. C. For the area saturday. Again, a lot of rain for the early part of the day, saturday afternoon, we could see some scattered thunderstorms, may bring some moderate rains to the area, but our chance of seeing any moderate rain really diminishing greatly by saturday evening. We drop that line. Here is a look at what neighborhoods will see the higher amounts of rain and the purple and the red. Hagerstown, martinsburg, winchester, culpepper, fredericksburg, everywhere else, about a half inch or more. But keep in mind, the ground is saturated. So, if we get any good rains early in the day, which could likely happen, mainly a little bit of isolated flash flooding. Here is your friday and into early saturday morning. Here is what im talking about, might be flash flood Warnings Issued around areas of washington county, maybe frederick county. Prince william rains coming in Early Morning, now, with a much from noon on as we go into the afternoon and evening hours. The Area Coverage of those showers really diminishes greatly. Drier up here, Frederick Maryland gatorsburg, the rain mainly south and really trending south by 6 or 7 00. You can, of course, see how the clouds is a. To thin. I think going to have lateday sunshine, only a 20 to 30 chance of a popup thunderstorm by the time we get to fireworks time. Humid overcast, early on. Fairly wet, 67, 72 going to go out to do that Early Morning run before you start eating keep that in mind, going to be a little wet. By grilling time, 2 to 6 00 popup thunderstorms might be ready to cover things up and bring it inside if you have to briefly. Some afternoon interruptions, temperatures sliding down to 81 degrees by 6 or 7 00. Get up to a hay of 82. 84 pax river. I will show you the beach forecast for anyone going to going to rehoboth or outer banks tomorrow. Saturday morning 70 to 74 degrees, by the afternoon, 78 to 82 degrees our range. Again pretty optimistic we will have a thinning of the clouds a hill bit of sunshine late, only an isolated chance we could see a popup thunderstorm. So, here it is it is going to be humid when the fireworks do go off, 73 to 76 degrees, with all that moisture in the air, we go into sunday morning, i think we are going to have some widespread fog around the area, but sunday is looking dry. The high, 86. We have got some rain for the early part of next week and some higher temperatures coming our way next week as well. So we get through this fourth of july weekend with what may be our coolest fourth in more than a decade u in a couple of minutes, i have the beach forecast and your convenient forecast. Thanks, vj. A new controversy for Baltimore Police. The sign found inside a Police Transport van that is sparking another investigation. One that comes on the heels of the freddie gray case. Im mark see graves on the mall for the capitol fourth if you are headed out to the National Mall for fireworks tomorrow, be prepared for largerthanusual crowds. Mark segraves is live there on the National Mall. Mark, the mall is already small their normal with all that renovation. You advise some folks to plan ahead . Reporter you absolutely want to plan ahead, chris before you come down here tomorrow, whether youre going to the foo fighters concert at rfk or going to come see the symphony here at the u. S. Capitol youre going to have to deal with crowds, but if you want to watch the fireworks, theres going to be a lot less room for spectators on the mall this year than there usually is. With the turf restoration project going on on the National Mall, theres construction between 7th and 14th street, fenced off, not available for sort of that prime fireworks viewing area. So folks that are used to popping out of smithsonian and grabbing a piece of turf on the mall going to have to go a little bit further to find a place this watch this year. Reporter of course, lots of restrictions like no coolers and no bottles and have to go through security to the get onto the mall for the fireworks or the Capi