Who was at the door. The wounded teen taken to the hospital and pronounced dead a short time later. This is pamela caldwell. It was her apartment where it started. She said when she got to the scene she tried to chase those teens away with a b. B. Gun. When i saw them i was using a b. B. Gun to keep all of them from jumping him and while i was doing it they was fighting and they fought all the way up to the stop sign. Reporter miss caldwell says monday night the three teens spraypainted vulgar words on her apartment door and then smashed in the windows of her car. Smashed my windshield and painted my car, spraypainted my car and my apartment door. Reporter why . They wanted the boys to come out to fight that night but they didnt come out. Reporter police say the stabbing victim is 18. The man with the knife also 18. They knew each other. Its been said that at one point they may have even been described as friends. Neighborhood reaction coming up at 6 00. Back to you. Marylanders are rejoicing over news that tolls in that state, theyre dropping. And for some its going to make a significant difference. Transportation reporter adam tuss is at the bay bridge talking to drivers. Tough assignment out there, huh,ed a tsunami. Lots of excitement. Not often you get a chance to tell people that tolls are coming down but here at the bay bridge the cash toll drops from 6 to 4 the ez pass price cut by more than half. And theres more. Needless to say people are very happy to hear the news. Yes yes thats great reporter clearly roy is excited. Roy lives in stevensville drives back and forth across the bay bridge every single day. He works in southeast d. C. Over to d. C. And back. Reporter roy uses an ez pass so this will save him 2. 90 a day, 14. 50 a week itll make his commute to and from stevensville much more bearable. I have lived over there for going on 28 years and this is the first ive heard of it. Thats phenomenal. Reporter not just the bay bridge. The icc also dropping its price. Right now it costs 4. 40 to go end to end in rush hour and will cost 3. 86. Im glad. I appreciate it. Reporter why the drop in tolls . Maryland governor larry hogan calls it tax relief. The governor has been calling for a toll reduction since last year. Reporter the state also doing away with the monthly 1. 50 charge for ez pass and will increase the discount drivers get if they use an ez pass. Pretty amazing to think somethings actually coming down not going up. Its unusual. Reporter but residents say theyll take it. Back here now live of course the state is going to lose money in all of this. How can they afford to lose the money and still keep up with road maintenance . That part of the story at 6 00. Back to you. The search continues right now for a missing Howard University doctoral student whose cell phone pinged in a northern Montgomery County park. A search of the area didnt turn up any sign of him. Lance buckleys family says the last time they heard from him was in a text message tuesday morning. That day he left his home in Stafford County to come to d. C. To pick um a packet for his upcoming graduation at howard. Investigators yesterday said buckley may have had a gun on him at the time. Imagine if this is how your workday starts. A woman in rockville saw a car crashing into her office. It pinned her under her desk. She worked at a physical Therapy Office on park lawn drive near randolph road. News4s chris gordon has been following the story since it broke. He updates us on the investigation. Reporter police are charging the driver of the car with negligent driving. She crashed through the window coming to a stop deep inside the office of proaction physical therapy. A couple people were many the office at the time. One was trapped underneath the car and the desk. They were extricated and transported to the hospital. That was the most serious injury. Reporter two others in the office were transported to the hospital with serious injuries. So was the drive of the car. Ems personnel describe her as elderly. Her injuries are not lifethreatening. Reporter police say the car tame came from the parking lot in front of the building. Then the drive lost control and apparently panicked. Four or five others inside the office suffered minor injury ts. They were evaluated by medical technicians but declined to be take on the hospital. An investigator drove car backwards out of the building. Later we were allowed inside. There appears to be extensive damage to the wall furniture, and equipment. As a result of all this damage proaction physical therapy is closed for the rest of the week. But they tell me they hope to begin seeing patients again on monday. In rockville, chris gordon news4. The pictures from that scene are fairly dramatic. For more head to our facebook page. Baltimore businesses hit by last weeks riots will have a chance to get nointerest loans for repairs. The state of maryland will offer loans up to 35,000 for terps of up to five years. The state tells us businesses with greater losses could qualify for a separate loan program. Those could run as high as half a Million Dollars with terms up to 15 years and an Interest Rate below market rate. Dbs Auditing Office will take another look at the use of force by Police Officers in the city. The office hired an independent monitor which will oversee reforms from 2001 to make sure the Police Department is still complying now. Those reforms came amid reports d. C. Officers fatally shot more people per capita than any other major u. S. City. Earlier today Law Enforcement officials from all over the country met here in d. C. To talk about use of force. Chief cathy lanier says issues with force are not training based. The key is what is our role in the community, what is expected of the police and what is it people want from the police and then we build from there in terms of reestablishing trusting relationships in the community and training our people the right way. The chief adds its important officers know theyre supported and that the department has a commitment to constantly improving. New security changes approved for the white house. News4s Scott Mcfarlane broke that story about those changes to the white house fence. Tonight hes learned that installation work is going to begin within 24 hours. Reporter two major sets of changes to White House Security were approved late this afternoon by federal officials. Those new sharp spikes that were promised for white house fence will be bolted on in july. The National Park service says. A more immediate change happens starting tomorrow. Federal crews will install newer vehicle check points along the white house fence. This shows the current vehicle check. The second is the new vehicle checkpoint. You can see its more secure. About those spikes. They will be bolted onto the white house fence. They say they want to deter fence jumpers, of which there have been several in recent years. All of this is a prelude to more permanent largescale changes to security here some of which were discussed in a meeting late today. Our objective here is not only to improve security in the area and for the white house but also to improve the Visitor Experience of the park. Reporter those more permanent changes will also include a new white house fence, potentially a higher fence, potentially a double fence. The news4 iteam has learned they ruled out other measures. They were considering a mote around the white house, a chainlink fence, eve anbar bed wire fence. All those ruled out. Well find out what they are going to do sometime in 2016 for the new permanent White House Security. At the white house Scott Mcfarlane news4. Part of the fairfax team is in nepal saving lives, other members have been testing a new tool that could make them more effective. The device called finder was developed by nasa and homeland security. It uses microwaves to listen for evidence of survivors in piles of rubble. It pinpoints within five feet where those survivors are, even by just hearing a heartbeat. Instead of having to dig or break rock two or three feet away we now may be able to dig or break rock right next to somebody and get them out faster. The finder device the fairfax team has in nepal right now helped find four survivors already. A d. C. Police officer walks on an attempted murder charge. Tracee wilkins explains how the jury reached this verdict. Youre driving down the road when you lose control of your car. The windows even the brakes. Your car has been hack. Up next well show you whos behind this. And whether or not it would happen to you. Talking tact weekend right now. Potential Tropical Storm. music hey let me help with that. Oh, thank you music introducing the oneandonly Volkswagen Golf sportwagen. The sportier utility vehicle. A d. C. Police officer accused of beating and trying to kill his wife inside their home goes free tonight. Were hearing some of the evidence. Prince georges county bureau chief Tracee Wilkins is outside the courthouse in Upper Marlboro. Tas tracee . Reporter it seemed like overwhelming evidence until we heard the defense attorney say this is just not what we need to convict this man and at the end of the day jurors agreed. This was a situation where there were two vergs of a similar story. Reporter but who was telling the truth . D. C. Cop Samsung Lawrence or his wife betty . Did lawrence seen here in this vest, beat and attempt to kill his wife of more than 20 years . We all along thought that the evidence actually supported his rendition of what actually happened on that day. Reporter but there was evidence supporting his wifes version as well like the 911 call made from inside their home by their daughter. Prince georges county 911. My father is hitting my mother. Reporter the other 911 call from the neighbor after betty escaped her home. Prince georges county 911. They ore on their way, buddy. Its okay. Reporter the pendant lamp and knives he allegedly used to threaten and beat his wife were found in the house but without his fingerprints or dna. When you look t at the dna evidence the fingerprint evidence none of which belongs to my client i think the jury was ims pred that maybe Miss Lawrence was not telling the truth about what happened on that day. We brought charges that reflect the seriousness of the offenses and we felt that the evidence was sufficient. But jury is final arbiter and we respect that. Snoof this was lawrences second trial. The first ended in a hung injury. The States Attorneys Office says theyre pleased with the cases they presented in spite of the outcome. These cases are tough. One thing is for certain which is we are absolutely going to continue to fight for victims of Domestic Violence here in the county and we take all these allegations very seriously. Reporter sampson claimed selfdefense and said his wifes injuries were sustained after he push her off of him during an argument where she was being physical with him. Jury agreed at the end of the day. On news4 at 6 00 now that he is out of family hopes will happen next. Live in Upper MarlboroTracee Wilkins. Back to you. A serious blow tonight. Nsas program of collecting millions of americans phone records. A federal Appeals Court ruled unanimously that the program, which is part of the patriot act, violates our privacy. The aclu supports todays verdict. In a democratic country youre supposed to have suspicious first before you have a search. And the nsa was essentially reversing that and putting the search first. Congress has until june to pass a law overriding todays court ruling. Well this is a onceinalifetime event in the skies over washington and its tomorrow. More than 50 vintage world war ii aircraft will fly over the National Mall. This marks the 70th anniversary of our victory in europe. It will happen between noon and 1 00 tomorrow. As a result flights in and out of Reagan National theyll be stopped during this event. And then on saturday a lot of these planes are going to be on display at the smithsonians center out in chantilly. Car hacking as technology continues to evolve, do drivers need to be concerned . Consumer reporter Erika Gonzalez is here with eye opening video. Consumer reports got behind the wheel of a car hacked by the government as part of a research study. Getting hacked . Take a look. Jake fisher director of Consumer Reports awe or the testing, says most of the systems in your car are actually controlled by a computer. Tus cars are basically computers on wheels. Computers control basically everything the engine, the suspension the seats, the mirrors, even the air conditioning. Reporter but with all of these computers could the security of your system be compromised . Consumer reports got to experience a controlled hack by the national Highway Traffic Safety Administration as it researches car security. The demonstration showed how Consumer Reports auto editor mark reckton was left helpless at the wheel by nhtsas frank barrickman. He took control of the horn, the seat belts and the brakes and steering. Wow. Seat belt pretensioners going, the fan full blast, horn going, windows going up and down all at once. Quite the haunted car. I believe it is a matter of not if when someone could possibly do something nefarious to the vehicle. While this may sound unsettling Consumer Reports says it isnt a reason to pan pick. The benefits of the computers far outweigh the risks. Reporter theyll be following the research as the government tries to stay ahead of hackers making sure that Something Like this will never happen to you. Wow, its going furious at me. There we go. Incredible to think about, right . Consumer reports experts stress at this point hacking can only be done with a computer thats been hardwired into the car and by someone with some very intimate knowledge of the cars software. So whether or not thats going to be happening here with, you know your neighbor highly unlikely. Back to you. Thanks erika. Five years after its launch the Capital Bike Share Program has seen a huge boost in ridership. Its nearly tripled. The average bike share station is now seeing about 25,000 pickups and dropoffs a year. And the busiest station in d. C. Is the one at mass avenue and dupont circle. As expected bike usage peaks in the spring and the summer drops off in colder months but doesnt go away. Well, this one hurts, folks. New details tonight about the injury to wizards star john wall. Jason pugh has more on that and how it could impact the teams run in the playoffs. Jason . Reporter seemed revealing this afternoon that point guard john wall has five fractures in his hand and wrist. His status for saturdays game against atlanta and possibly the remainder of the playoffs is uncertain. He was injured during the Second Quarter of game one against the hawks on sunday. He was able to finish out the game but he could not go for game two. Wall is consulting with physicians and specialists to determine the best course of action. Teammates say they have to be prepared to go on without him this weekend. You know, by no means do we feel like this series is ovechkin or our goals change so you know were going to continue to go out there, reach for our goals, and continue to fight each and every night. Head coach Randy Wittman said walls hand so so swollen right now he cant even hold a basketball. Well hear from him later on coming up on news4 at 6 00. Jason pugh. We are working several stories tonight. A group of students has filed a major sex discrimination complaint against a local university. Why they say Cyber Threats could be connected to the death of a student. And Defense Department workers ran up quite a tab at casinos and strip clubs. Officials say they did it with the governments credit cards. Area of low pressure weve been talking about all week could become our first Tropical Storm of the season. Everybody just keeps saying another Beautiful Day in the neighborhood. And, yeah, thats exactly what we have. Plenty of sunshine out there, although we have seen some clouds build in across parts of the area, but weve seen a lot of sunshine and beautiful conditions. Temperature sitting at 80 degrees, winds out of the south at about 6 miles per hour. Most of us seeing that sunshine. Take a look at the numbers, 81 leesburg 77 culpeper annapolis the cool spot at 71. Nothing on the radar. Storm team 4 radar clear. It will stay that way for the next couple days. I think tomorrow will be another dry day. Saturday and sunday maybe a slight chance of a shower. Well get to that. I want to take three stops here. One obviously clouds to the south towards the bay. Towards the ocean. Thats cooler air coming off the east here. A little bit in the way of cloudiness. Watch these clouds form right here. Thats about the only place seeing the clouds. Lets take a wider view back to the west. Look whats happening in oklahoma. Yesterday it was the tornadoes, 41 tornado reports, numerous areas of damage massive damage around Oklahoma City. Today more thunderstorms developing. Those thunderstorms making their way toward the north and east. Even more tornado warnings have been posted into parts of the area. This is something theyll be watching. The fact they could see more tornadoes and more Severe Weath