Look at the preparations. The Task Force National capital region. Master Sergeant Aaron lovely introducing reporters to a giant 60 by 40 foot map used to stage inaugural practice to guide logistics for 15,000 military personnel. New on the map this year, the new trump hotel at 12th and pennsylvania. Yet another site that could see protests. Clearly at this point the biggest concern are the number of potential protesters. Reporter the military personnel dont do police work but can if asked. Back up to secret service, d. C. Police and other Law Enforcement. If something goes bad, its up to the Law Enforcement agency to make the first move, if you will. And only if needed will they call on the national guard. Reporter none of the milton the street will be armed. Their job is crowd control and ceremonial events. We try to instill in them historical significance of this peaceful transfer of power in our democracy. And it represents to our country and really to the entire world. Reporter nearly a year of planning is about to be tested for all involved. Lieutenant colonel freeman is in charge of making sure everyone is fed and housed. Is the food good . The food is always g military food is always good. Reporter can you work 12, 14, 16 hours if you have. To were ready. In the district, tom sherwood, news 4. Buy one gift, get dozens more in exchange. Sounds too good to be true, right . Because it is. Its called the secret Sister Exchange and its all over social media. The Better Business bureau says its the newest form of gift scam and it works because it takes advantage of your friends. Consumer reporter omar jimenez tells what you to look out for. Reporter its that time of the year again. For many, da the top of the to do list. But on the other side of the aisle, so is holiday scamming. It is perpetuated over and over by social media. You think its from your friends, relatives, people you like and trust. Reporter according to the Better Business bureau that, trust is being played through two scams in particular, wine exchanges, give one, get six back, for example. Or socalled secret Sister Exchanges, buy one gift and in return, get up to 36. You have to have your friends engage with what you is fraud. We dont take the time to investigate. We trust the information. Thats one of the most odd things about today right now where we are in our social world. Reporter its a mind set many are hard at work to take advantage of. Scam artists know ut and the greatest amount of scam is online and by the use of social media. Reporter and because social media isnt going away any time soon, the bett says make sure youre double checking what websites youre going to, beware any calls to action, and keep an eye on how youre sending ecards. And remember, above all else, if it sounds too good to be true, it probably s. Remember, its the holiday time. Youre not going to get anything for free, right . Just about any time. We have great gift resources on the nbc washington app including a giftwrap guide and the best toys for kids. Just search gift. Its a problem a lot of folks know all too well. As you get older, reading isnt as easy as it used to be. A lot of us turn to reading glasses. But one local woman just underwent a surgery that made everything come back in focus. Barbara harrison tells us about rain drop surgery. Most of the words are fuzzy. If i had my reading glasses, i could read it. Reporter she is describing a situation known as over blurred closeup vision. People begin to experience it some time around their 40th birthday. Newspaper and magazine articles get harder to read and instructions like those on the back of a medicine bottle are almost impossible. There is no way i can read it. That is a larger fonlt, i cant read it. Reporter she came to this house in washington because her husband recently got surgery theer correct his distance vision. She was hoping they might have something to fix her problem, too. Oh, my goodness. Reporter the doctor found her vision to be correctible with the right lens. But jennifer said she had tried contact lens but they didnt work for her. I have very dry eyes. So for me contact lenses are not an option. Reporter dr. Rose told her she was in luck because the fda just recently approved something called rain drop surgery. Similar to lacic but for correcting closeup rather than the Washington Area to have it done and she was thrilled with that news. Its my lucky day. The renowned eye surgeon has had a lot of experience with lacic. People have come to him for surgery from all over the world. The last time i counted about 150,000. Reporter 150,000 . Ive done my share. Reporter but on this day, he was launching a tested but still new pioneering visionary leap forward. And with eyes wide open, no fear of failure, jennifer was ready. Eager to be among the first to bet fit from this new cutting edge technology. With razor thin precision, the surgeon maneuvers to fix a Permanent Rain drop size inlay made mostly of water atop the cornea. And like a rocket taking off for places seen only on giant telescopes, we watched and waited for a perfect landing. Perfect. Doing good. Ill try oh, yeah. There was two stepping under the stars and George Strait wow. I cant believe it. I can see it. Reporter i cant believe it. Im signing up. News 4, washington. Amagz. It is the hottest ticket in town. Still ahead, a look at what you may need to do if you want to visit the National Museum of africanamerican museum of culture next year. And a dad uses tech skills to save us a lot of money on groceries. Wewe. Get. Angry. Out of control, mad to the core, angry. Get out of the way or get rolled over. Anger. Just one reason more of us are surviving cancer than dying from it. Give now to the american cancer society. Interest in the new National Museum of africanamerican history and culture is so high. Officials are changing how they hand out tickets. Admission is free but do you need a reservation. Right now all the advance passes from now through march are gone and if youre looking to get advance passes for next april, they will be available a. M. Can you also now try to make same day reservations online. And a limited number of walk up passes will be available week days at 1 00 in the afternoon. Groups of ten or more, they can now schedule visits up to a year in advance. We still have special honors this week for a Fallen Marine from montgomery county. The sergeant died in 2006 while serving his second tour of duty in iraq. This week local law make areas announced that a bridge is dedicated to the bethesda naturive to honor his service and sacrifice. A sign bearing his name will be installed at the east west highway bridge over the Georgetown Branch trail. It was unveiled during a ceremony at the church he used to attend in bethesda. Maryland congressman spear headed the effort. Whether peopn people cross t bridge, theyll remember those who sacrificed for all of us in the community and,f remember alex for his dedication to our community and our country. Congressman petitioned the Maryland Department of transportation to dedicate that bridge in the sergeants memory. Its been a holiday tradition for 20 years. Coming up, ill tell you why this will be the last christmas dinner. Plus, the new app that can save you big money on your next trip to the grocery store. News 4 consumer reporter susan hogan shows us how it works. Fios is not cable. Were wired differently. That means incredibly fast 150 meg internet for the holidays. So in the 3. 7 seconds it takes gary watson to beat the local sled jump record, fly, gary, fly. His friend can download 13 versions of the perfect song. His sister can live stream it. While his mom downloads how to set a dislocated shoulder. Get 150 meg internet, tv and phone for just 79. 99 per month online for the first year. Cable cant offer that. Only fios can. How else do you think he gets around so fast . Take the reins this holiday and get the mercedesbenz youve always wanted during the winter event. Now lease the 2017 gla250 for 329 a month at your local mercedesbenz dealer. There were some long lines this week in southeast d. C. Local Police Officers stopped by for a home cooked meal and to remember a fellow officer. Brian gibson who died in the line of duty. But this is the last year officer gibsons mom is opening her home for the annual event. So as we report, its somewhat reporter every officer who walks through Shirley Gibsons meal gets a meal and a big hug. Shirley and her husband have been hosting the dinner since hir son brian was gunned down while on duty 20 years ago. Theyre my sons and daughters. And there is not a day that i dont pray for them. I hear siren and i say god, please take care of my kids. Theyre out. There. Reporter it started out as a way for her to cope with her loss. But i grew into something much bigger. After 20 years, she says with hundreds of officers coming through each year, its become too much for her to keep up. For 20 years, i spent the month of december trying to make sure that the officers had a chance to come by and get a home cooked meal. Reporter in addition to the hundreds of officers who showed up today, the d. C. Police helicopter also showed up to say thank y her home. For gibson, today is a happy day having her mother here for the First Time Since brian died. But she says shell miss cooking for the hundreds of officers. As for all of those hugs shes been giving out, shirley says, its her way of touching her son brian just one more time. It meant that i would get a chance to hug them with their vest on and with their Service Weapon on and feel my brian. Reporter now while this is the last time Shirley Gibson will open her home to Police Officers for a holiday dinner, it may not be the last time that there is a holiday meal in honor of brian gibson. The police union hopes to carry on the tradition. As for shirley, the police chief showed up not too long ago with a 4,000 Gift Certificate so she can take a cruise. In southeast, news 4. Just a wonderful woman and story so, so a local dad got sick and tired of paying monster bills for his family of four at the grocery store. He did something about it. Now hes helping thousands of other families as well. Consumer reporter susan hogan shows us how can you bust that grocery budget in half. Reporter aside from our mortgage, the grocery bill is the next budget buster in our homes. So when i heard about this new app called basket that would help me save time and money, i just had to check it out. Are you a haphazard shopper . Randomly grabbing products off the shelves and then being shocked with the total at checkout . I always have the best intentions to get in that circular and clip the coupons. Reporter we all start with good intentions. Searching for coupons, shopping for store brands, but no matter how hard we try, the grocery bill breaks the bank. We spent at least 300 a week. Reporter local dad and Software Developer was blown away by his familys grocery bills. So he did something about it. He developed an app called basket. The first ever crowd sharing community of shoppers tired of shopping blind. Its quite simple. You put in your grocery list, items you want to buy, push a button and called shop my basket and all the prices at all your local stores. All the sales, all the coupons included within seconds the app reveals what your Shopping List will cost at Grocery Stores near you. We asked this mom to give it a try. First she types in her grocery list in the app. I have all the regular typical stuff. You know, stuffing, were going to make pumpkin pie and i need chicken broth. Reporter once her list is complete im going to shopt basket. Reporter within seconds she can see what the list will cost. At my nearby giant, things are look going. Zbh a few miles down the roa d, the app costs 60. At another store, its more than 72. Sometimes ive had significant savings over here on a bigger Shopping List, the weekly Shopping List. Im saving 100 and i do drive there. Reporter if you want larger discounts, tell the app youre willing to shop at two Different Stores or drive a few miles out of the way to get even bigger discounts which is what elizabeth did to save 65 . Times 52 weeks in a thats 5,000. How it works is also a story. It all started really as a game of sorts. How you can be a part of this first of a kind app, well show you tomorrow morning starting on news 4 at 4 30. Susan hogan, news 4. All right. When we come back, trauma patients get a rare chance to say thank you to the medical profession whos perform miracles every day. We rely on our courage. The kind of courage that shows up when we need it. Courage. Just one reason more of us are surviving cancer than dying from it. Give now to the american cancer society. Its a tradition that dates back decades. Michelle obama made her final holiday visit to the kids at Childrens NationalMedical Center right here in the district. She and Ryan Seacrest read a story to the kids and gave them a chance to ask anything they wanted. One of them asked about what she got the president for christmas. Mrs. Obama only said that one gift has to do with music, the other with sports. Emergency room doctors and nurses workday in and day out to save lives. A lot of times they dont get to see the patients after they leave the hospital. But once a year at George WashingtonUniversity Hospital trauma patients get a chance to say thank you to those hospital employees. News 4s amy cho got to see one reunion at the fifth annual trauma survivors day. Reporter sam walking up the aisle and taking a seat. Seems simple enough until you consider this was sam just a short the last time has been the most difficult. Nine months of my life. Reporter in february he was hit by a metro train and nearly lost his life. That night doctor Libby Schroeder is the one on call. He arrived having suffered pretty impressive injuries. Reporter but even more impressive, the way he handled it, with the will power for weight lifting and that wide smile and those witty one liners. They said they were going to have to amputate my leg. Im trying my best. Reporter he was one of seven trauma patient whos came back to gw to see the ones that saved him and to say thank you. Im glad to see you doing great. Thats what were happy about. To see you up and walking. These are the people that took care of me when i had no ability to take care of myself. Yes, thank you. One of those people, mary shapell. Im so uplifted to kind of see and recognize them and witness them. It brought tears to my eyes. I have a lot to look forward. To. Reporter hes looking forward and paying it forward to others like himself. Maybe fill out a mobile application for meantal health. Reporter whatever he does, the team at gw says theyll be there for him and his fellow survivors every step of the way. In the district, amy cho, news 4. Theyre always working hard, weekends, holidays, you name it. Thats all for news 4 this week. Im chris lawrence. Were going to leave you video from d. C. And maryland as police help spread Holiday Cheer in our community. Thank you for joining us. Have a great week. Welcome to redskins chronicles. Im Larry Michael at redskins park. Each week here on redskins chronicle we take an in depth look at a piece of the teams legacy. Today we take a look at a team within a team. Today we focus in on tlegendary offensive line forhe