new evidence. what surveillance cameras captured during the massacre in tucson. tonight the city tries to move forward. secret weapon. was the u.s. behind a sophisticated attack on iran's nuclear program? the latest from inside tehran. under siege. americans among the many trying to get out of the chaos in tunisia. what we found on our way in today. and, miracle rescue. a woman buried alive, and her husband who refused to give up. their incredible love story one year later. from nbc news world

headquarters in new york, this is "nbc nightly news" with lester holt. good evening. their city thrusted in the spotlight by last week's horrible shooting tragedy, the people of tucson tried to turn a new chapter and seize the message with a march for peace. on this day of worship, much of the community is trying to reconcile the events of the past week as it continues to bury its dead. we begin our coverage from tucson tonight, miguel. >> reporter: good evening. many left flowers in the parking lot where 19 were gunned down as others marched for people. a march with a message. the young, the old, strangers and friends, determined to show this community is healing. >> we want to show the entire community, hey, look. we care. we're here, and this happened in our backyard, but we're not going to put up with it. >> reporter: the rally ended at congresswoman gabrielle

giffords' office. this is where gabe zimmerman worked, one of the six victims. 30 years old and engaged to be married and today a service in his memory. 800 in attendance. giffords' husband who rarely leaves her bedside was also there. gabe's father says his son was his best friend. >> it's harder for me to get through life on a day-to-day basis. >> reporter: also remembered today, dorwin stoddard, the 67--year-old father of five. she was released in time to attend her husband's funeral. on this sunday many in tucson turned to their faith, seeking comfort in a tragedy where for now there are no answers. the suspected gunman jerrold lee loughner who made this rambling video is back in court later this month. today "the new york times" told

police during his arrest i plead the fifth. tucson bank tellers tell the paper when loughner entered their building they could quote feel for the alarm button shaken by his demeanor. at the crime scene the fbi retrieved surveillance video, the shooting on camera. >> the sources in law enforcement say this is a gruesome video. it's very clear that it's a suspect resembling mr. loughner. they say it's something you don't want to see. >> reporter: but here no talk of the suspect, instead a time to remember the victims. many seeking peace in a community full of sorrow. tonight in tucson a public vigil will be held for auflt victims, and like today's march lester, large crowds are expected to gather. >> thank you. we want to move a fi miles away to the hospital where there is late word from the officials

there about the condition of wounded congresswoman gabrielle giffords. kristen welker is outside the medical center. what are they saying? >> reporter: lester, just moments ago hospital officials told nbc news congresswoman gabrielle giffords' condition has been upgraded from critical to serious condition. they say she's doing well on this sunday. while she continues to heal inside this hospital, a touching memorial continues to grow on the outside. they come from nearby and far way to mourn and pay tribute. >> it's been devastating. >> reporter: best friends for decade, betty hunter and helen tremble drove 2002 houtwo hours phoenix. >> you become part of it when you come down here. it touches your soul. >> reporter: flowers, candles and notes cover the better part of the hospital lawn. four tucson natives it's not surprising to see the community come together like this.

>> this is the tucson that i know, that i grew up in. this is who we are. >> reporter: megan elwood wanted her 6-year-old to see. >> to show him there's more good in the world than bad. >> reporter: even parents are struggling to understand. >> it's tough, especially to know that there was a 9-year-old girl who passed away. it it really hits home. >> reporter: it also hits home for the eskabels. their daughter is 9 like christina taylor green. they drew this picture for christina and says no one could be taken away so soon. >> i wish the 9-year-old girl was alive so she could live longer and do more things in her life. >> reporter: this lawn is much more than a memorial. it has grown into a place of solace for a community in pain. this is where they grieve. this is where they are comforted. this is where they are starting to heal. >> things may happen in life

that we don't have answers to, but we hold onto our family, faith and community and help us get through times that are difficult. >> reporter: now, hospital officials say they will give us much more information about the congresswoman in a news conference first thing monday morning, but again, her condition has been upgraded from critical to serious. now, as for the two other remaining shooting victims here at the hospital, they are in good condition. lester. >> all good to hear. kristen welker tonight. thank you. all over the country this weekend members of congress went out of their way to reach out to people in their districts as congresswoman giffords did last saturday. among them congress mon peter welch from vermont. in kansas city republican congressman kevin yoder attended a prayer service today honoring giffords and the other shooting victims in tucson. the shooting of congresswoman

giffords set off deep soul-searching about the tone of american politics, and while it seems apparent the shooting was the act of a single disturbed person and likely unrelated to the political climate, it is still having a profound effect in the halls of power. >> reporter: from one of her closest friends in congress, today a call to look to a recovering gabrielle giffords for inspiration. >> we can take from her strength and hopefully as ourselves be better than we are. >> reporter: as washington gets back to business many hope a lesson has been learned and in one respect it be business as usual. >> be straight and honest and don't varnish it. you don't need to be nasty about it either. >> reporter: an early test comes wednesday. prepeel of the new health care law, the issue that set off a series of town halls two summers ago comes up for a vote in the gop house.

>> you'll see a more civil debate. imt not sure the substance will change much. >> reporter: in his memorial address president obama called for a change in tone among those that disagree. >> it's important for us to pause for a moment and make sure that we're talking with each other in a way that heals, not in a way that wounds. >> reporter: today mr. obama's 2008 foe john mccain lauded the president as a patriot writing we should mindful as we argue about our differences that so much more unites than divides us. already there is a small step toward that unity. >> so tonight i'm proposing specific steps -- >> reporter: as the president prepares to deliver his state of union next week, many members of both parties say they will cross the aisle that runs down the middle of the chamber and listen to the speech alongside their political opponents. >> that's symbolic, but maybe it sets a tone and everything gets a little biltmot more civil.

>> reporter: there's a fuel schedule of events at the white house this week. on wednesday he hosted his hosts his chinese counterpart for an ofisht state visit. lester. >> thank you. from overseas a story of nuclear politics and intrigue tonight involving iran and allegations that the united states was involved in a sophisticated attack on iran's nuclear program. it comes as iran tries to gain an edge before sbernlinternatio talks on its nuclear program later this week. john yang has the latest. >> reporter: attempting to appear open and transparent, iran gave diplomats a tour of the main enrichment facility today. another part of the xharm offensive, the top nuclear negotiat negotiator sat down with richard engel for a rare interview. he brushed aside economic sanctions imposed on iran. >> translator: the tools of

sanctions is go for the old times. >> reporter: there are increasing signs of serious problems for iran's problem as secretary of state hillary clinton alluded to this past week. >> the most recent analysis is that the sanctions have been working. they have made it much more difficult for iran to pursue its nuclear ambition. iran's had technological problems that have made it slow down their timetable. >> reporter: those problems appear to be the result of cyber warfa warfare, an attack on iran's nuclear program with a sophisticated computer virus. >> this is for cyber war as much of a game changer as the airplane was for conventional war. >> reporter: reports say the virus caused the program's highly calibrated centrifuges to shake apart, all the while hiding the problem from engineers monitoring them and not affecting computers outside the program. >> the genius of this is that

you can use it to attack nuclear enrichment facilities that you don't know about. >> reporter: you don't believe the -- >> in his interview with nbc news he acknowledged the attack and said evidence pointed to the united states as the source. so far u.s. officials haven't commented officially. >> reporter: the cyber war shows they are weak and vulnerable. >> reporter: he said foreign powers were responsible for attacks on scientists working on the program. >> translator: they somehow manage these assassinations of scientists. >> reporter: strong accusations as iran tries to gain the upper hand for up coming talks in istanbul later this week. now to tunisia where the capital remains a tense place tonight two days after the long-time president was drirch from power. the prime minister says a national unity government will be announced today.

in the meantime tunisians and many foreigners are caught in the middle. the u.s. is warning americans to avoid travel to tunisia. john ray is in the capital again for us tonight. >> reporter: the great scramble to escape tunis, tourists an unwilling witness to revolution in the chaos that followed. embassy officials seemed overwhelmed, many are stranded again tonight. bridget young has been studying arabic here, but now she's trying to get home to san diego. >> it's chaos. >> reporter: two days after the popular uprising that ending with the country's leader of 23 years going into exile, tunis is tense. the city's center is under army occupation, and the soldiers seem to share a nation's nervousness. close to one government building we're halted and at gunpoint

made to sit. this is a vivid illustration of how tense the city is. we're being held by the army men pointing guns at us and told that we cannot leave. long minutes pass before we're leased. the man next to me tells the soldiers he's an armed police officer, but it's the police most mistrusted. in the suburbs vigilantes mount checkpoints. we come across these men brandishing knives. they say supporting of the ousted president are looting and creating havoc trying to destroy the new beginning. what were symbols of power are ram sacked. this was a seaside villa of a nephew of the president. his possessions are torched or scattered. this is one of the many luxury homes owned by the former president's family. it's now a ruined monument to the corruption and excess.

the turmoil has not yet ended nor is it clear what will come next. john ray, nbc news, tunis. when "nbc nightly news" continues on this sunday evening, a remarkable story of love, hope and survival in haiti. one couple's journey a year after the quake. and high stakes in hollywood. tonight's golden globes are all about green. [ woman ] i had this deep, radiating pain everywhere... and i wondered what it was. i found out that connected to our muscles are nerves that send messages through the body. my doctor diagnosed it as fibromyalgia, thought to be the result of overactive nerves that cause chronic, widespread pain. lyrica is believed to calm these nerves. i learned lyrica can provide significant relief from fibromyalgia pain. and less pain means i can do more with the ones i love. [ female announcer ] lyrica is not for everyone. lyrica may cause serious allergic reactions or suicidal thoughts or actions. tell your doctor right away if you have these, new or worsening depression, or unusual changes in mood or behavior or any swelling or affected breathing, or skin,

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to learn more call 800-quicken or visit us at quickenloans.com. so if you go from a croissant with butter to a whole wheat roll with olive oil, you'll go from roughly 16 grams of fat to about 6. take alli with that, and you're down to 4.5. alli helps you reach a healthier weight, when you get active, eat right, and take alli. alli will block about 25% of the fat you eat. and for every two pounds you work to lose, alli can help you lose one more. fda-approved alli -- how healthy works. learn more at myalli.com. as we continue tonight, one year later scenes from haiti where parts of the country look as though the devastating earthquake hit just yesterday. tonight we have a follow-up on a remarkable story we told you about a year ago. it happened in haiti. it's the simple and powerful

bond of love. we went to port-au-prince and have the report tonight. >> reporter: as they comb through a mountain of rubble almost a week after haiti's devastating earthquake, rescuers from los angeles doubted they would find anyone alive. the collapsed building has been a bank, and the last place the manager was seen alive. even as the days ticked away, her husband, roger, never lost hope. >> i knew that she was there. >> reporter: for six straight days roger stood vigil. he spent every day of the last 15 years with his wichlt he wasn't about to leave her now. >> i called for her. she didn't answer me. >> reporter: or so he thought. under 30 feet of broken concrete in total darkness, she called out for roger just as he did for her. did you hear your husband?

>> yeah, every time i heard him. and i said i'm still alive. i'm alive. i'm alive. please help me. i'm alive. >> reporter: though he couldn't hear her pleas, he moeshlized help convincing an excavator to clear piles of rubble. after six days came the moment he was waiting for. the rescuers moved in climbing into the hole where she was trapped shooting this video with their cell phones. after working for hours fearing another collapse, they finally managed to free her pinned hand. >> okay. hon, you're out of here. >> reporter: they carried her out, and it was then that she started to sing. >> it's probably the most moving moment for any rescue i'll ever have. >> reporter: months later in a satellite interview, she finally got a chance to say thank you. >> i love you. god bless you. >> reporter: she's now back at her old job at port-au-prince

but not in the same building. it's still in ruins. despite her ordeal and losing four fingers, she says she hasn't had a single day of depression. >> i'm very happy to be alive. i admit i feel sadness. >> reporter: just moments of happiness with her husband. >> i look at her, and i admire her. >> every day. >> every time. >> reporter: a new life filled with joy and a familiar song. don't be afraid, she sings, god is here. words that coarried one woman through the darkness back into the light. nbc news, port-au-prince. when we come back, the story behind a heart-breaking photo being seen around the world. ♪ [ male announcer ] from jet engines that have fewer emissions, to new ways to charge electric cars, to renewable sources of clean energy, ecomagination from ge is advanced technology

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in south america a break in the rain gave rescuers in brazil some time to deliver food and water to remote areas cut off by mudslides. days of heavy rain sent tons of earth crashing down mountainsides. the death toll is now over 600. officials say there's no longer any hope of finding survivors after four days buried in mud. among the most poignant images from the grave of a woman that died in a landslide. her dog sat next to the grave for two days after she was buried. in australia cleanup continued today in brisbane, the country's third largest city, after three weeks of flooding in queensland. it covered parts of neighbors states today. at least 27 have been killed in the flooding, 14 are still missing. at the vatican a joyful day

as pope benedict spoke of the beautification of pope john paul ii. today the faithful in st. peter's square, some with polish flags, showed their pride over the news of the late pope. president obama and his family attended a church service in washington today. the service honored the 25th anniversary of the national holiday marking the birth of martin luther king jr. at that service the congregation sang happy birthday to michelle obama who turns 47 tomorrow. when we come back tonight, high honors in hollywood when we look behind the golden globes. :ñ.ñgz

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here's a scene out in beverly hills right now as attendees file down the red carpet for the golden globe awards. as george lewis reports the players take this competition very seriously. >> reporter: if you think of award season in hollywood as a political campaign, then the golden globes are sort of like the iowa caucuses or the new hampshire primary. a huge kickoff event. only here people dress better. but behind the glitz and the the glom moglamour is a high-stakes struggle. >> it's money.

tens of millions of dollars in additional revenue. >> reporter: they spend a lot of money to campaign for those awards. >> in some cases these movie studios spend as much to campaign the moovie as they did to make the move itself. some some experts say how you behave at the golden globes could show your chance at the oscars. if you have a lot of thank yous in your acceptance speech. >> i'd like to thank my dogs. >> reporter: like mickey roshg, you might not get a chance to repeat the speech at the oscars. >> if you win you have to make a good speech, and if you don't, some oscar voters might count that against you. >> what we really want to do is see these actors being glamour russ, caarticulate and that's t rope they talk.

>> reporter: tonight's ceremony comes nine days before the movie academy announces the oscar nominees. so the oscar hopefuls are squarely in the spotlight. as awards season gets under way, the players in the movie industry are concerned about creating the same thing the politicians try to gin up in a campaign. the big mo, momentum. george lewis, nbc news, los angeles. and that's "nbc nightly news" for this sunday. live coverage from the red carpet is coming up next here, followed by the 68th annual golden globe wards at 8:00 p.m. team. brian williams will be here tomorrow. i'm lester holt reporting from new york. from all of us here at nbc news, new york. from all of us here at nbc news, good night. -- captions by vitac -- www.vitac.com