Only on sunshine. Nightly news begins now. Announcer from nbc news World Headquarters in new york this is nbc nightly news with lester holt. Good evening. Im tamron hall in for lester. It is the last thing many of us want to think about happening on americas birthday. The potential for an isisinspired attack in the u. S. As millions of americans prepare to gather for back yard barbecues, spirited parades, and aweinspiring fireworks, Law Enforcement is at the ready from coast to coast while overseas u. S. Embassies and diplomatic posts have called in their Emergency Action committees to assess the threat not an unusual step but one that takes on new importance following a recent wave of deadly attacks across the globe. We start tonight with National CorrespondentPeter Alexander and a world on high alert. Reporter across britain today a moment of silence. Fans pausing at wimbledon, the queen bowing her head. The uk remembering 30 of its citizens killed a week ago, where an isisinspired gunman attacked this tunisian beach. Concerns growing here in the u. S. Lone wolf is our worst nightmare, but we have nothing to indicate we have any of that going on. Reporter officers securing the site of tomorrow nights boston pops concert. A half Million People expected. Patrols on the Charles River too. Logistically this is a monumental task. Reporter in new york more than 7,000 officers on watch. At philadelphias barricades are going up while everyone prepares to celebrate Independence Day. Weve got to live. I mean what are we going to do . Were going to run from all those guys . I mean theyre all cowards. Reporter in California Los Angeles Police are planning heavy deployments to dozens of popular venues all to protect americas freedom. Its also something that the adversary would like to destroy. So were switched on to that 37 we have our officers very aware of it. Reporter dozens of Police Departments rely on this california company, shot spotter. Their technology can distinguish fireworks from gunshots. What were trying to do is shoot out a highly vetted alert so were not sending Law Enforcement agencies on wild goose chases. Reporter terror tremors echoing around the globe with the state department once ain ordering security reviews at u. S. Embassies. This year is different than other years simply because of the heightened threat around the world. Reporter but Authorities Say there remains no credible threat anywhere in the u. S. And today the president relaxed with a round of golf. And authorities tonight are repeating that important reminder urging people to get out and enjoy themselves but to be vigilant. In the words of the Boston Police commissioner if you see something, say something. Dont think youre going to bother police. Tamron . Thank you, peter. Meantime this Independence Day will unfortunately be a wet one for millions of americans following torrential storms in the south and with the rain comes lightning. July is the peak month for lightning strikes, and this year were on track for one of the deadliest seasons in years. Nbcs Gabe Gutierrez has more on that threat. Reporter already a shocking summer. In duluth minnesota a 12yearold boy is recovering after lightning struck him this week. Last night 732 strikes in horry county South Carolina in just 15 minutes. Just out of nowhere. We didnt know where to hide. Reporter this group of friends was hiking last week in colorado. Just a bright white hitting the ground and just and then i just fell and then i got up and then everybody was on the ground crying and screaming. Reporter around the country the stormy spring has led to 15 lightning deaths so far this year. All of last year there were 26. Florida, louisiana, mississippi, and alabama lead the nation in lightning strikes. Men are more likely than women to be hit. And most injuries happen on weekends when people are outside and not at work. I think its a necessity. Reporter in North CarolinaBrian Brumfield takes no chances. He puts lightning rods in every home he builds. The lightning hits the rod on the roof then travels through the attic, through the house, and down through this copper wire eight feet into the ground where it dissipates. It puts a lot of peace in your mind to know your house is safe when youre not here. Reporter tonight more people are bracing for more of this. Natures own fireworks this holiday weekend. Gabe gutierrez, nbc news nags head North Carolina. In colorado a medical helicopter exploded during takeoff today, killing the pilot, about 80 miles outside denver. A paramedic and nurse also suffered injuries but there were no patients on board. The crash sparked a huge fire that also engulfed a pickup and spread to the grass and trees nearby. In tennessee 5,000 people are now allowed back in their homes and businesses following an emergency evacuation near the site of a train derailment. They had been told to clear out early yesterday morning when a train car carrying hazardous chemicals derailed and caught fire. There is fresh outrage tonight in baltimore where police are investigating an inflammatory sign found inside one of their vans. To many it is especially offensive in light of the death of freddie gray. An autopsy showed gray likely suffered a fatal spinal cord injury in one of those vans. His death sparked mass protests and violent riots. Get more now from nbcs tom costello. Reporter the question tonight, was someone within the Baltimore Police department trying to taunt prisoners with this sign found inside an arrest van that reads enjoy your ride cuz we sure will. In april 25yearold freddie gray suffered a fatal spinal cord injury after being arrested and placed inside a similar van without a seat belt. His death touched off weeks of protests and riots. No justice no peace reporter just last week a leaked autopsy report concluded grays death likely occurred when the van in which he was riding suddenly decelerated. We have probable cause to file criminal charges. Reporter Six Police Officers have pleaded not guilty to charges related to his death. Veteran Law Enforcement officers say the sign in the van sends the wrong message in baltimore. Insulting the people you arrest just works against you in the long run. You need to treat everybody with respect. Reporter in a statement Baltimore Police say the nature and the posting of wording in one of our transport vehicles is both concerning and unacceptable. This week the city said it will put cameras in police vans but it will take four years to equip all baltimore officers with body cameras. The six officers facing charges in freddie grays death remain free on bail. Their trial set to begin in october. Tom costello nbc news washington. There is more tonight on those explosive comments donald trump made about mexican immigrants. Nascar became the latest corporation to distance itself from trump, saying it will no longer hold an awards event at a and while some of his fellow republican candidates have criticized the remarks and called on others to denounce them at least one candidate is offering his support. Now, when it comes to donald trump, i like donald trump. Hes bold. Hes brash. And i get that it seems the favorite sport of the washington media is to encourage some republicans to attack other republicans. I aint going to do it. Im not interested in republican on c matters. You know doesnt rhetoric matter . I salute donald trump for focusing on the need to address illegal immigration. The Washington Cartel doesnt want to address that. The Washington Cartel doesnt believe we need to secure the borders. The Washington Cartel supports amnesty. And i think amnestys wrong. And i salute donald trump for focusing on it. He has a colorful way of speaking. Its not the way i speak. But im not going to engage in the medias game of throwing rocks and attacking other republicans. Im just not going to do it. Senator ted cruz with chuck todd today meet the press. As for the democrats, Hillary Clinton was running hard today in New Hampshire as one of her main rivals begins to make some inroads. We get that story from nbcs kristen welker. Reporter its fourth of july weekend in battleground New Hampshire and Hillary Clinton is again courting voters here. Please sign up and be part of this campaign. Reporter but the democratic frontrunner has to watch her back. Vermont senator Bernie Sanders longshot campaign is now getting real. Thank you all very much for being here tonight. Reporter sanders is narrowing the lead in New Hampshire with one recent poll showing only an eightpoint gap. Bill clinton leads comfortably in others. We each run our own campaigns and i always knew this was going to be competitive. Reporter and sanders has shown he can draw large crowds. Close to 10,000 in liberal madison, wisconsin. In case you havent noticed, there are a lot of people here. Reporter today in iowa. This country belongs to all of us and not just to the billionaire class. Reporter the 73yearold once selfdescribed socialist is riding a wave of enthusiasm among people who like his populist message. We really feel like hes the voice of everyone. He speaks on issues that are important to middleclass america. Reporter its not altogether surprising sanders is attracting voters in New Hampshire. After all, he hails from neighboring vermont and he appeals to the independent spirit here. Still, he also has obstacles. For example, hes far less popular among minority voters who were key to president obamas two Clinton CampaignOfficials Say theyre taking sanders seriously. After all, she thought victory was in her hands in 2008 until barack obama came along. Senator sanders job is to rile things up to get people excited, to keep Hillary Clinton honest. Her job is to wane a general election. Reporter five republican candidates will campaign at the big holiday parades here in New Hampshire this weekend as well trying to break from the pack of 14 vying for frontrunner status. Kristen welker nbc news hanover, New Hampshire. Overseas tens of thousands of people took to the streets today in greece supporters and opponents of a referendum this sunday on how the country should deal with its crippling financial crisis. Its a matter of growing concern across europe and here in the u. S. We get the latest from nbcs keir simmons in athens. Reporter greeks are divided and angry. There were clashes with police tonight and opposing protests just blocks apart. Polls say greeks are evenly split and in less than 48 hours they will vote on their very future. Yes or no to europe. Do you believe it will be a no vote on sunday Prime Minister . Reporter the greek Prime Minister emerged from athens equivalent of the white house to urge his people to vote no to harsh new austerity measures what he calls europes blackmail. The greek Prime Minister is literally walking up into crowds of thousands. This is the man who is gambling with the future of this country, perhaps the future of europe. Reporter but it may toob late. Be too late. Jobs scarce banks closed long lines at atms. In thes lonn ka an old man broke down waiting for money. Greece is strapped for cash and owes billions. Without money the country will soon struggle to import essential goods. Youre lacking baby snood. Baby food. Like this the milk. Reporter this pharmacist says theyve already stopped stockpiling the basics like painkillers. Some say a 1930s style depression is inevitable. American missionaries from hawaii and arizona have come to greece to work in a soup kitchen. Greece needs help. We think people in the u. S. Dont have jobs. These people really dont have jobs. Reporter greeks are divided. Their economy is in pieces. And the suffering will not end suffer. However they vote. Tonight the greek finance minister says his country is preparing for the worst, stockpiling food medicine, and energy supplies. The crisis is now reaching Critical Mass threatening the wellbeing of this strategically important country and the dream of a unified europe. Tamron . All right, keir thank you very much. Still ahead tonight, while taking down drug offenders, he became one himself. Stealing evidence to feed his habit and practically giving suspects a get out of jail free card. A law mans disturbing tumble down into the pit of addiction. Also one of the most incredible feats under the sun. The flight record that was just shattered using only sunshine for fuel. When a moment spontaneously turns romantic why pause to take a pill . And why stop what youre doing to find a bathroom . With cialis for daily use, you dont have to plan around either. Its the only daily tablet approved to treat erectile dysfunction so you can be Ready Anytime the moment is right. Plus cialis treats the frustrating urinary symptoms of bph, like needing to go frequently, day or night. Tell your doctor about all your medical conditions and medicines, and ask if your heart is healthy enough for sex. Do not take cialis if you take nitrates for chest pain as it may cause an unsafe drop in blood pressure. Do not drink alcohol in excess. Side effects may include headache, upset stomach, delayed backache or muscle ache. To avoid longterm injury, get medical help right away for an erection lasting more than four hours. If you have any sudden decrease or loss in hearing or vision or any symptoms of an allergic reaction stop taking cialis and get medical help right away. Why pause the moment . Ask your doctor about cialis for daily use. For a free 30tablet trial go to cialis. Com introducing the first ever gummy multivitamin from centrum. A complete, and tasty new way to support. Your energy. Immunity. And metabolism like never before. Centrum multigummies. See gummies in a whole new light. When youre living with diabetes steady is exciting. Only glucerna has carbsteady clinically proven to help minimize blood sugar spikes. So you stay steady ahead. When i started at the shelter, i noticed benny right away. I just had to adopt him. Hes older so he needs my help all day. When my back pain flared up we both felt it i took tylenol at first but i had to take 6 pills to get through the day. Then my friend said try aleve. Just two pills, all day. And now, im back for my best bud aleve. All day strong and try aleve pm now with an easy open cap. Were back with a cautionary tale of a staggering fall from grace. An fbi agent who became the very thing he was hunting. A drug offender. The heroin he busted others for proving too big a temptation for himself. He went spiraling into addiction and allowed so many he had a hand in arresting to go free. Nbc National Correspondent kate snow has his story. Reporter matt lowry always wanted to be in Law Enforcement just like his dad. He kept seeing i was in a uniform. So he went to his mama and asked her to make a Little Police uniform. Reporter he excelled in sports and school, graduated from the fbi academy with the highest honor. Matt was living his dream, busting drug dealers mainly for heroin. But one day last september he disappeared. Day turned to night. I didnt get a call from one of the other agents. Bill get to this location. They told me the location. Its matt. It doesnt look good. What goes through your mind . Matts been shot. I mean thats the only thing that im thinking of is matt is shot. And hes they found him somewhere. Reporter he hadnt been shot. But the answer to what happened is in these evidence photos obtained by the washington post. Empty heroin baggies in his fbi vehicle. Evidence from cases hed been working. Heroin was in front of me you know every day. Reporter hed first gotten hooked on prescription painkillers for a debilitating stomach problem, and when he could no longer get them turned to heroin. Its a big leap though matt to go from thinking about heroin, being addicted to painkillers, and then stealing evidence bags. Mmhmm. Yeah. Something, you know clicked in my head. And let me just take a little bit to start off these withdrawals. And then ill figure out later, you know how am i going to get through this. Reporter he used heroin daily for more than a year. Even the day his son was born. Matt pleaded guilty to 64 counts and 25 drug defendants were let go because he tampered with evidence in their cases. All the hard work working 12 hires day on all these cases, you know for months at a time, and then all of the sudden all these guys are released. Because of what you did. Mmhmm. Yeah. Reporter in Court Documents filed by the u. S. Attorney wednesday, prosecutors said matt lowry was a special agent who took an oath and instead of upholding it with honor he disgraced himself and the fbi. Did you feel like you let your dad down . Yeah. I let him down. Let my coworkers down. Everybody who had, you know an idea of what i what they thought i was. It was completely wrong. Reporter hes been sober since that day in september, with the support of his wife and family. Hes spending all the time he can with his 16monthold son, knowing he faces seven to ten years in prison. The hardest part. And like said my being away especially from my son, is going to be the hardest part. Hes a good dad, isnt he . Hes a better father than i am. He is a wonderful father. He is a wonderful husband. He is hes a protector. But he couldnt protect himself. Reporter sentencing is next week. Kate snow, nbc news Anne Arundel County maryland. Were back in a moment with the pop culture icon thats about to get a makeover. Abies grow up to be cowboys. Dont let em pick guitars or drive them old trucks. Boys . Mamas, dont let your babies grow up to be cowboys. Stop less. Go more. The passat tdi clean diesel with up to 814 highway miles per tank. Hurry in and you can get 0 apr plus a 1,000 volkswagen credit bonus on 2015 passat tdi clean diesel models. To you, theyre more than just a pet. So protect them. With k9 advantix® ii. Its broadspectrum protection k ills fleas ticks and mosquitoes too. K9 advantix® ii. For the love of dog™. Roundup im a loving husband and a real good dad but weeds just make me rattlesnake mad well roundup has a sharpshootin wand im sendin them weeds to the great beyond roundup yeha [ whip cracks ] no need to pump, just point and shoot hit em in the leaves, and it kills to the root round fences, trees even mulched beds cause the only good weed is a weed thats dead roundup yeha [ whip cracks ] [ male announcer ] roundup. [ whip cracks ] with a onetouch wand. I built my business with passion. But i keep it growing by making every dollar count. Thats why i have the spark cash card from capital one. I earn unlimited 2 cash back on everything i buy for my studio. And that unlimited 2 cash back from spark means thousands of dollars each year going back into my business. Thats huge for my bottom line. Whats in your wallet . A remarkable show of kindness and generosity in charleston South Carolina. Two weeks after the Church Shootings that killed nine people a group of anonymous donors has raised over 3 million to establish a Scholarship Fund for family members of the victims and others at the emanuel african methodist episcopal church. The fury over the confederat is having some unexpected fallout in the world of pop culture. Golfer bubba watson the twotime masters champ, bought the original general lee car used in the dukes of hazzard at auction in 2012. Well now hes tweeted, all men are created equal. I believe that. So i will be painting the American Flag on the roof of the general lee. That provoked both cheers and boos from watsons followers. And when we come back the long slow flight that made History Today by letting the sunshine in. Ce policy has a number. But not every Insurance Company understands the life behind it. Those who have served our nation have earned the very best service in return. Usaa. We know what it means to serve. Get an Auto Insurance quote and see why 92 of our members plan to stay for life. Theres a more enjoyable way to get your fiber. Try phillips fiber good gummies plus energy support. Its a new fiber supplement that helps support regularity and includes b vitamins to help convert food to energy. Mmmmm, these are good nice work, phillips the tasty side of fiber, from phillips. Super poligrip seals out more food particles. So your food wont get stuck and you can enjoy every single bite. Eat loud, live loud, super poligrip. I accept that im not 21. I accept im not the sprinter i was back in college. I even accept that i live with a higher risk of stroke due to afib, a type of irregular heartbeat, not caused by a heart valve problem. But i wont accept giving it less than my best. So if i can go for Something Better than warfarin. I will. Eliquis. Eliquis. Reduced the risk of stroke better than warfarin plus it had less major bleeding than warfarin. Eliquis had both. That really mattered to me. Dont stop taking eliquis unless your doctor tells you to, as stopping increases your risk of having a stroke. Eliquis can cause serious and in rare cases fatal bleeding. Dont take eliquis if you have an artificial heart valve or abnormal bleeding. While taking eliquis you may bruise more easily and it may take longer than usual for any bleeding to stop. Seek immediate medical care for sudden signs of bleeding like unusual bruising. Eliquis may increase your bleeding risk if you take certain medicines. Tell your doctor about all planned medical or dental procedures. I accept that im not as fast, but im still going for my personal best. And for eliquis. Reduced risk of stroke. Plus less major bleeding. Ask your doctor. If eliquis is right for you. Finally tonight, imagine crossing the Pacific Ocean on a flight from japan to hawaii without using a drop of fuel. One man did just that and today he made aviation history. Nbcs Hallie Jackson has the story from honolulu. Reporter on this aroundtheworld flight and were in the air. Reporter its the most dangerous leg. Five days over the pacific. And no one knew if Andre Borschberg would make it because no ones ever flown this long alone, much less without a single drop of fuel. Borschbergs piloting this solarpowered plane from a seat no bigger than a bathtub. Im really enjoying myself discovering this fantastic adventure. Reporter borschberg and his partner Bertrand Picard are on a round the world journey to show what solar energy can do. The singleperson plane took off from abu dhabi in march traveling more than 10,000 miles since then stopping in six countries, all of it streaming live online, like when the pilots eating. Drinking. Even sleeping during one of his 20minute naps. When hes exercising doing yoga sitting down since the cockpits too small to stand in. And when nature calls you asked a question about the bathroom . I have to ask. Reporter the toilet is built into the seat. 17,000 solar cells soak up the suns energy during the day to keep the plane going all night. Its average speed just 40 miles an hour. Even slower when borschberg finally landed in hawaii today. Longest solo flight ever whats going through your mind right now . So much joy, you know. So much incredible feeling. Reporter it may be decades before any of us fly in a solarpowered plane, but these pioneers hope to prove its possible showing for the future of clean energy the skys the limit. Hallie jackson, nbc news honolulu. Incredible. That will do it for us on this friday night. Im tamron hall. For all of us at nbc news thank you for watching and have a happy fourth of july one day a rider made a decision. The decision to ride on and save money. He decided to save money by switching his motorcycle insurance to geico. Theres no shame in saving money. Ride on, ride proud. Geico motorcycle great rates for great rides. It was a masterpiece. She is like the real deal. Who are is already an oscar front runner and who is worth seeing at the movies. An expert analysis of this summers flicks