Reporter it was about 5 30 this morning, 40yearold Ross Michaels had gone to his office to pick up a computer when he was headed home on i70 in his Toyota Corolla. Thats when the tractor trailer lost control on this ramp to 270 south. A Toyota Corolla was forced into the back of a ford f150. This Toyota Corolla spun around 180 degrees. The occupant and operator of that Toyota Corolla was pronounced decea scene. Reporter neighbors were shocked to hear of the tragedy. Sympathy for the family. Its a tragic accident. Its difficult to hear. To see. Especially this time of year where its much more painful. Reporter police say no charges have been filed. It is ongoing. We have reconstructionists that reconstructed the scene. Usually takes a month or two before theyre finished. Reporter yes, as you can imagine, a very sad scene here in frederick, maryland, just weeks before christmas. Traffic fatality in Frederick County this year. Wendy and doreen, back to you. Thank you, mark. New at 5 00, a driver in the hospital with serious injuries after this crash in northeast d. C. These pictures show the wild scene this afternoon. This is 24th and douglas streets. You can see the drivers van flipped over onto its roof. Crews arriving at the scene quickly got the driver to the hospital. Right now, a family in Loudoun County is trying to bring their loved one home. She disappeared from the groves. 16 years old. Were told she likes to hang out in the ashburn shopping center, Dulles Town Center and potomac falls. Detectives think she left on her own accord on friday. If youve seen celina groves, call police or submit an anonymous tip to the Loudoun CountySheriffs Office app. The crime sent people running for cover in the middle of the day. Two men with assault rifles held in october. Today the fbi released new information on this case. As news 4s pat collins reports, agents are focusing on two new clues from the crime scene. A lot of foot traffic, businesses in the area that were open at the time of the robbery, so very brazen, very bold. And thats why we need to get those individuals identified and off the street. Reporter the scene, this Suntrust Bank in tacoma park. October 25th. It was noon. Lunchtime. This brinks truck pulls up to make a delivery. The courier gets out. He opens up the door. As he does, a maroon car pulls up behind the brinks trunk, a guy gets out with assault rifle, forces the brinks man to the ground and says this is no joke, give me the money. The robber reaches in, grabs a bag of money, walks slowly back to that maroon car and off they go. We have a lot of robberies in delaware which the fbi covers. We dont see this every day with two men show up with assault rifles and attempt to take over an armored car in the middle of the day. Reporter this could have had tragic consequences. Yes, sir. Were very fortunate that no one was injured. Reporter two big clues here. The getaway car, a maroon lexus 350 that they say looks like this one. And white coveralls similar to these which the agents say were worn by the gunmen. Now theres a posted in this case. The tip number, 4102658080. This robbery had some people in tacoma park running for cover. Ill have more on that coming up at 6 00. See you then. A woman claims a hospital worker sexually assaulted her while she was in care at a d. C. Medical center. Tonight the employee says its not true. Shomari stone on the phone, said he didnt touch the woman inappropriately on sunday but refused to say anything else about it. Simon is expected in court next week. The United Medical center in southeast washington released a statement saying in part that the hospital does not comment on matters that are under investigation. Marylands newest casino, Mgm National Harbor, officially opens tomorrow. But could this mgm eat into the bottom line of the other casinos in the state . News 4s chris gordon takes a in maryland. Reporter Mgm National Harbor has attracted dealers, bartenders, supervisors and hosts from the two maryland casinos closest to it. Maryland live and baltimores horseshoe casino. Were becoming an employer of choice and we have had a lot of applications from not only maryland but from other gaming markets in the east coast. Reporter each Casino Program for employees. Thats why losing any of them to another casino hurts. Baltimores horseshoe had 1,900 employees when it opened 2 years and ago its down to 1,500 now. It held a job fair last week offering a 500 bonus for employees with casino experience. Maryland live has been the biggest revenue producer of all the casinos in the state. The question is whether competition from Mgm National Harbor will hurt the if mgm will attract players away from the other casinos. This poker player lives in landover so hes about equal distance from mgm and maryland live. I would definitely be staying here at maryland live. I feel like, you know, they have a Great Community for the players and theyve made a lot of strides in their poker room. Reporter this virginia woman has a long drive to get to maryland live. I will go to mgm. Stafford. Reporter ahead at 6 00, the battle for the betters. How maryland live is getting ready for the competition that will be coming from mgm beginning tomorrow night. Reporting from arundel mills, maryland, chris gordon, news 4. And tomorrows grand opening of the Mgm National Harbor was nearly five years in the making. News 4s Tracee Wilkins has been following these developments and controversies since the beginning. She will be joining us in a few minutesth journey. Not a bad day out there today. Doug, we had some nice sunshine. Whats coming ahead . Reporter oh, what a day. I mean, a day after yesterday with all the rain that we saw, today plenty of sunshine, bright blue skies. What comes next, unfortunately, is just plain cold. Youre going to need the gloves. Maybe the national zoo gloves. Theyre pretty cool. Wait until i show you what these do a little later. Live, this is whats going on, we have the lights behind us. Tair finally looking pretty good now that the sun is making its way down. A half a million lights coming in. This is anna, she came in from Loudoun County then awe my tweet that we were down here and just showed up with her grandkids as well. They come down to zoo lights every year. So excited to be down here. Lets take a look, show you whats happening weather wise. A great night. How great will tonight be for zoo nights . The best night in the next two wee dropping to 41 by 11 00. A cool night tonight but not all that cold. Well talk much more about this coming up in a couple minutes and show you just how cold things get. Im back at 5 25. Theres the music. Is that manheim steam rollers . No, its not. Tweet him and tell him what it is. Theres a renewed effort under way to develop the long dormant Mcmillan Reservoir site in washington near howard university. Battle thats trying to stop it. Tom sherwood takes us there. Reporter thousands of commuters and other vehicles from maryland and the district pass by the north capitol street towers of the 28 acre Mcmillan Reservoir sand filtration plant. In opened in 1905 but its maze of underground sam muriel bowser. I have literally driven or walked or been driven by this site just about every day of my life. Reporter the mayor today led new efforts to save the iconic towers from falling apart while day waiting a court suit by local citizens. They say contracting laws werent followed and planned redevelopment is flawed. Its going to be destroyed. Member mcduffie lives nearby. He contends most residents support this redevelopment. They desired to activate this site, to take the fence down, to have a worldclass park, to have amenities to take their kids across the street to a community center. This is what were working toward. Reporter located near howard university, everyone says redevelopment is long overdue. Exactly what that will be, still to be decided. In the district, tom sherwood, news 4. C but in 2015, a family of 6 died after their tree caught on fire. Coming up, hear from their relatives who share safety tips trying to save others. Hotel rewards. Make sure youre getting those points. Which ones give you the biggest bang for your buck. And as we head to break, we have a question for you. What do you think of time magazines pick of donald trump as person of the year . Do you love it . Or do you hate it . Most of you who have voted say you hate it. While we take a quick break, go to our nbc washington Facebook Page and cast your vote. This is news 4 at 5 00. . . . . . . . . Afoot and lighthearted i take to the open road. Healthy, free, the world before me, the east and the west are mine. The north and the south are mine. All seems beautiful to me. After the holidays, an annapolis home went up in flames killing six members of one family. Fire investigators say the four children and their grandparents might still be alive today if the family did one thing. News 4s Meagan Fitzgerald is live with the story and the plea from one of their loved ones. Meagan . Reporter yeah, six family members were lost when a Christmas Tree went up in when people puchase the trees, she passes these out, on them, safety tips reminding people these trees can be deadly. Christmas tree shopping is part of what makes the holidays so special. I think a tree kind of brings the smell of the holidays into the house. Reporter and of course, everyone has their own criteria in mind. Home the perfect one, there are critical safety tips to warn you about, aside from making sure you water your tree daily. What you need to do, when you get home, you want to make that fresh cut. Just like flowers, it will reseal and will not absorb the water as it should. Its important for me to explain to people how to take care of your tree, to keep yourself safe. How fast fire can occur and also the importance of sprinklers in peoples homes. Christmas tree safety isnt just important to sher. Its extremely personal. I lost my brother and sisterinlaw and their four grandchildren to a Christmas Tree fire two years ago. Reporter it was january of 2015 when this annapolis mansion went up in flames. The blaze swept through the house so quickly that atf agents say shers family didnt have a chance to escape. It was in the middle of the tree and it went into flashover in less than three minutes. Reporter atf agents determined that the Christmas Tree wasnt watered daily. If it was, they say its possible shers family would still be alive. Go to the needles. Make sure they bend. Reporter shes hoping safety reminders will help other families, her grief, during whats supposed to bt most wonderful time of memory. Reporter coming up at 6 00, sher explains how the fire started in her brothers house and how its a mistake a lot of people make every day during the holiday season. Back to you. Meagan fitzgerald, thank you. Maryland congressman Elijah Cummings calling for an independent commission to investigate any foreign interference in the president ial election. He joined other lawmakers in asking for 3 million to fund an 18month investigation. Overwhelming evidence that russia meant to mess with our electoral process and that doing nothing about that degrades our democracy. This is not a democratic or republican issue. This was an attack on our democracy and that impacts every single american. Lawmakers say the commission would be also looking into maybe youre planning on a trip and you need to book a hotel. Isnt it always great when you can use reward points to pay for that . News 4s consumer reporter susan hogan working with you with how you can make the best of those points by getting into the best Hotel Rewards programs. Susan . Reporter thanks, wendy. We, of course, all like to be rewarded. Today wallet hub released its 2016 Hotel Rewards report. Key metrics. So take a look. Such as the average value of a point, point expiration policies, and volatility of award night pricing. And it found for the second year in a row that wallet hub named wyndham rewards as the best Hotel Loyalty program for travelers of all spending level. It found la quinta offers more than 14 in reward value per 100 spent. The most according to wallet hub among major as the only major hotel chain whose rewards points dont ever expire with account inactivity. Also remember this, Hotel Rewards points really do vary widely from program to program. And the Financial Advising website has a calculator you can actually use to look at rewards based on your own budget. Just go to our nbc washington app and search Hotel Rewards. May not be such a great deal after all. Listen to this. Beginning next year, if you buy United Airlines cheapest ticket, youll have to pay to use the overhead bin. Thats right. Travelers flying who purchased basic economy fares will only be allowed a small carryon bag like a purse or a backpack or a briefcase, something that can fit underneath the seat in front of them. If youre flying basic economy, you must pay the regular checked bag fee, 25 for the first 35 for the second bag. At 13, Prince William county girl is showing up students across the country. Eleanor won 25,000 today for taking top prize in a National Science competition. Eleanors in the eighth grade at venton middle school in woodbridge. She says the spacex rocket explosion in 2014 inspired her to experiment with cold gas rocket nozzles. Foundation prize. Eleanor says she wants to study engineering and become an astronaut. Next at 5 00, champing at the bit in the great cheese debate. Who knew there was one . Today we learned some lawmakers will go to Great Lengths to defend their state. Its a beloved story told time after time. Why the creator of hairspray says although hes not a party of tonights Live Performance on all right. Wheres doug . Doug is on manheim steamroller right now. Back out to the zoo. Rolling down connecticut avenue. Unclear whether were going to hear music or lions roaring. Who knows . Reporter this is tubing, guys. Were talking tubing without snow and not too be places you can do that. You the national zoo. They got tubing, 150foot tracks here. Take a look at the line right here. You guyses are ready to go. You guys ready . All set to go. All right. I was actually holding them up so they could be on tv. Go ahead. You got it. We got a pretty good line here, too, guys. Lot of people ready to go. This is one of the things they got. They got the train that goes up and down through zoo lights, of course, the merry go round if youve never been here before. Take a look at another vantage point. You can get the sense of how big this thing is. Ski slopes going down. That is the tubing that goes on. You actually go pretty quick. Yes, i have done them. You already knew that, though. Lets take a look outside right now and show you how things are. Not bad at all tonight. I mean, really a beautiful night compared to where weve been over the past couple of days. 48 degrees now. Temperatures around the area right now mostly in the 40s but starting to get into the upper 30s in some of the coldest areas. Winchester, 39. 41 gaithersburg and Dulles Airport coming in at 42 degrees. Going to be no rain, no snow any time soon. Were going to track another system during the day tomorrow. Future weather,ies to move throh early tomorrow. Shower activity, mix in southern maryland, fredericksburg. By 7 00, 8 00, kt, its all gone. Not expecting problems for the morning rush. Were not expecting anything there. Temperaturs will start to droop during the afternoon and start to see winds pick up late in the day tomorrow. Heres the forecast. Planner. 37 to start the day. 47 by noon. Up to maybe 48 by 3 00. If we get some sunshine. Then down quickly, down to 41 degrees. The winds picking up as i mentioned. Windchills already in the 30s. Thats nothing compared to where were going to be the next ten days. Take a look at that tenday forecast right now and see the trend. She won. She won. You cant see her, but she won. 48 on your thursday, but 41 on saturday, high of only 38 degrees. And take a look at next week, weve got a good chance of rain on monday. We go up to 57 on monday. And then just frigid next wednesday, thursday and friday. Thursdays high were going for a high of 33. Friday, going for a high of 29. And maybe even a chance of rain or snow as we end the tenday forecast. Amelia draper is going to be back later on. Shes going to break down fridays temperatures for you there, but i want to show you something that not even the people here have seen. Heck out these gloves. You ready for this . Yes, show us. Reporter all right. Oh. Reporter wheres the button . Check that out. Wow. Reporter that is cool. Suspect that awesome. Very cool. We need those. Those are fun. Bring some back for us. Reporter youre warm, youre fun. That tells you what kind of, you know, a person you are. You can have some fun. You can tweet in the dark. Those gloves on, doug . Reporter can i i did try that and my tweet did not successfully go. Okay. All right. Thanks, doug. On the eve of the opening of the mgm casino at National Harbor, we take a look at how the effort started and it was up against some stiff competition. He is nearly a century old and survived pearl harbor. Hes sharing his story about that attack 75 years ago now legislators have been struggling for several years to get this law in the books and why you may be guaranteed paid stronger is rebuilding a newborns heart. And restoring a fathers faith. Stronger is being a typical kid. Despite a rare disorder. Stronger is seeking answers and not givi