and nbc nightly news is coming up next. we will see you at 6:00. on this sunday night, palm sunday attacks. a state of emergency declared in egypt after deadly bombings at two churches, more than 40 people killed, many of them children, as isis claims responsibility. rising tensions. the new tough talk about russia and syria as the secretary of state leaves on a mission to moscow and another key white house officials is forced out. wake-up call for american cities after computer hackers triggered more than 150 emergency sirens in dallas, exposing vulnerability there and beyond. and dramatic improvement. the simple treatment for people with parkinson's that slows the disease and changes lives. "nightly news" begins now. from nbc news

world headquarters in new york, this is "nbc nightly news" with kate snow. >> good evening. at the beginning of the holiest week on the christian calendar, churches were packed all over the world today, and when isis targeted egypt's christian minority with bombings at two churches in cities north of cairo, the loss of life and devastation were extensive. a state of emergency has been declared and the military deployed across the country. the attacks comes pope francis is set to visit egypt later this month, a trip the vatican says will go on as planned. our matt bradley is in cairo tonight. >> reporter: a day of devotion turned to horror. a crowded palm sunday mass in cairo, ripped apart by what they believe was a bomb placed under a pew. hours later a suicide bomber scene at st. mark's church in

alexandria. security shows a man blowing himself up feet away from a playing child, after police stopped him from entering the church. that officer now hail as a hero. the twin bombings have left at least 43 dead, more than 100 injured and the middle east largest christian community in shock. many of the dead are children. "the situation is painful" a relative of one of the victims said. "why weren't proper measures taken to protect the people?" isis quickly claimed responsibility for both attacks, fulfilling a pledge made in february to target egyptian christians. isis attacks christians with horrifying regularity. egyptian president al sisi met with president trump last week. the two leaders pledged to fight isis terror together. >> i want to say to you, mr. president, that you have a great friend and ally in the united states and in me. >> reporter: mr. trump tweeting after today's attacks he has "great confidence" in the egyptian leader, but

experts are not confident in what so far appears to be president trump's unclear middle east policy. >> isis and its affiliates attacks against the two churches really show the inability of president trump to understand the complexity and the gravity of the crisis in the middle east. >> reporter: a vulnerable minority for whom isis remains the top concern. in the aftermath of these truly terrible attacks, many egyptian christians are turning their anger on the government. there were protests in alexandria today demanding better security, and in addition to announcing a three-month state of emergency, president sisi has fired a top ministry of interior official. kate? >> matt bradley in cairo tonight, matt, thank you. in this country the manhunt intensified for a heavily armed suspect authorities say stole more than a dozen high-powered guns in wisconsin and sent president trump an anti-government manifesto. nbc's blake mccoy has the new details. >> reporter: the desperate hunt for joseph jakabowski stretching into a fifth day, a man

authorities fear may be planning to attack schools, churches or government officials. today 50 miles from where he was last seen on surveillance cameras, security stepped up at churches. >> we enhanced our entry area by having ushers and deacons at the doors. the doors were all locked. the local police department were fantastic. >> reporter: service at this church in sun prairie were khan certified after reports of a man asks suspicious questions earlier in the week. >> we don't know if the guy was the same person, we can't ask that question but we're doing what we can to make sure everybody is prepared. >> reporter: food another possible sighting reported in darlington, wisconsin, about 65 miles from janesville. >> we don't know if he's in janes advise, wisconsin or somewhere else in the nation. >> reporter: 400 tips have poured in but so

far as he allude eluded more than 150 law enforcement officers searching for him. >> you are hearing on the news it happened over here, over there. it is like, wow, in janesville? >> reporter: police say he has a bullet proof vest, a helmet and arsenal of weapons stolen from this gun store. >> we know there were long guns stolen, we know handguns were stolen. >> reporter: the biggest clue authorities are working on, this cellphone video taken as he mailed a 161-page manifesto addressed to president trump. >> revolution. it's time for change. >> reporter: police have now interviewed the man who took the video and say he is cooperating. >> today is the day. so remember this face. >> game time. >> he doesn't care if you know him. this is the end game for him. there's no escape plan. the only plan is the attack plan. >> reporter: kids in janesville are on spring break this week so schools were going to be closed tomorrow. police are stepping up patrols at other potential targets and warn this man could be anywhere. kate? >> very scary. blake mccoy, thank you. secretary of state

rex tillerson arrived in europe tonight for crucial and highly anticipated meetings with the russians. the two nations have traded condemnations and warnings since the u.s. fired cruise missiles at syria last week. tensions complicating the relationship between moscow and washington. nbc's kelly o'donnell has more on what's at stake. >> reporter: under the radar, no more. rex tillerson, the media wary -- >> no comment. >> reporter: -- low-key secretary of state is emerging weeks after taking office. today his first sunday show interviews. >> i hope that russia is thinking carefully about its continued alliance with bashar al assad. >> reporter: a stern message tillerson is expected to take to russia where he will meet with the foreign minister this week. with his own established ties to vladimir putin from his former oil executive days, a putin meeting may also be possible. >> how he reacts to secretary tillerson, the kinds of signals he says in terms of

the future, that's what we need to be watching. >> reporter: tense relations. damaged by russia's protection of syria's assad regime and clouded by putin's interference in the 2016 election, with ongoing investigations by congress and the fbi. in moscow, nbc's bill neeley. >> reporter: here in moscow, the kremlin wants clarity from rex tillerson. what is america's strategy in syria? what about assad? does president trump want better relations with putin or more missile strikes? agreement, unlikely. >> reporter: today u.n. am bassor nikki haley blasted russia over syria's chemical attack. >> their initial reaction was, assad didn't do it, the syrian government didn't do it. >> reporter: in 2013 putin promised that russia's influence would stop assad's use of chemical weapons. >> russia has failed in that commitment, and the result of their failure has led to the killing of more children and innocents. >> reporter: the tillerson mission to moscow comes as the

white house national security team is reshaped. new tonight, k.t. mcfarland chosen by ousted adviser michael flynn, is out, offered an ambassadorship. following removal of political strategist steve bannon from the national security council by new national security adviser h.r. mcmaster. >> steve bannon provides the president with advice on a broad range of issues and will continue to do so. >> reporter: as national security adviser, mcmaster says russia should be compelled to explain how it could not have known in advance about the chemical attack in syria when some of its own personnel are stationed at the very base from which that attack was launched. a tough issue for secretary tillerson in russia this week. kate? >> kelly o'donnell down in florida. kelly, thank you. the u.s. is also engaging in a powerful show of force tonight aimed at north korea. a u.s. navy strike group is headed toward the korean peninsula after days of growing tensions. nbc's janis mackey frayer is in seoul, south korea, janice?

>> reporter: kate, tension here is nothing new. the u.s. strike on syria is widely seen as a message to kim jong-un that the u.s. is willing to strike north korea also. they have ordered the "uss carl vinson" to head to the korean peninsula because of recent provocations. this american show of force is met with a defiant vow from the north to bolster its own defenses, saying the strike on syria is justification for the regime's needs for a nuclear arsenal. the concern of a u.s. strike on north korea counterattack, the north has missiles pointed at seoul and there are 28,000 u.s. military personnel stationed in south korea. president trump has been pressing china's leader to rein in the north. the two met face-to-face for the first time last week, just 48 hours after north korea's latest missile test. these are cautious times, with the u.s. weighing options, north korea marking key anniversaries this month, and speculation kim jong-un may be

preparing for a sixth nuclear test. kate? >> janis, thank you. new details about the suspect in the deadly truck attack in stockholm, sweden, two days ago. officials say the suspect from uzbekistan was ordered to leave sweden in december after he was denied permanent residency. police also said a second suspect in the attack has been arrested. four people were killed. there's a showdown coming tomorrow in alabama, where the governor faces a hearing in the legislature on whether he should be impeached. he is accused of misusing his office, and as nbc's sarah dollopp reports, it stems from a personal relationship. >> reporter: what began as an alleged affair between alabama's governor and an aide is at the center of an effort to impeach him. hearings set to begin. against two-term member robert bentley. a sex scandal engulfed his administration last year when graphic recordings of phone conversations between the governor and top aide rebecca mason came to light.

>> when i stand behind you and i put my arms around you -- >> reporter: while the governor denies having a physical affair with the woman, he apologized to his constituents on friday, vowing to remain in office. >> i do not plan to resign. i have done nothing illegal. >> reporter: two separate investigations by a legislative committee and state ethics officials found probable cause that bentley violated ethics and campaign law by using state law enforcement officers and other resources to try to keep the recordings from going public. >> but seeing this embarrassment to our state right now -- >> reporter: if he is found guilty, bentley would be only the ninth governor in u.s. history to be removed from office. his fate now in the hands of the alabama legislature. sarah dollof, nbc news. cities and towns throughout the united states are waiting to see what becomes of the president's plan to rebuild the country's infrastructure. the need was highlighted dramatically over the last couple of weeks

by derailments at penn station here in new york city. we get more from nbc's morgan radford. >> reporter: two derailments in just 11 days. >> we will be directing you the safest way to evacuate the train. >> reporter: train service coming to a halt in new york, leaving hundreds of thousands of commuters stranded. >> i'm standing on the train, i'm paying so much money. it is not worth it to me. >> reporter: experts say the derailments prove our nation's railway system is simply too old. >> i think it should serve as a wake-up call. it's a realization of how fragile the entire system is. >> reporter: take new york's penn station. more than 10 million riders pass through each year. that's more than 1,300 trains per day, double the number from the '70s. >> it is nothing short of catastrophic. >> reporter: john is the current head of the gateway project, a $24 billion proposal designed to double the capacity of trains along the northeast corridor, including penn station. >> this is the most urgent infrastructure project in america. it can't go forward

without federal commitment, it can't. this is completely in jeopardy. >> reporter: president trump promised a trillion dollar infrastructure plan, but when he revealed his budget in march, it showed a $2.4 billion cut from the transportation budget. top democrats say our future depends on new improvements. >> it is vital to our northeast economy and it makes a world of sense. >> reporter: the reality of it is, this is also bigger than gist new york. >> this is a national issue and whether it's the locks and dams in the midwest or it's aging bridges and tunnels, highway systems, airports, we are way behind as a country. >> reporter: a country moving forward one step and one ride at a time. >> on wednesday president trump told the "new york times" he planned to present a trillion-dollar infrastructure plan to congress, but wouldn't specify whether proposals like the gateway project would, in fact, be included, kate. >> morgan, thank you so much. still ahead tonight, the computer hacking attack that

woke up a major american city in the middle of the night, sounding alarms about infrastructure security around the country.

for a lot of us concerns about computer hacking are focused on the personal stuff, stolen identities or p.i.n. numbers or someone looking at your emails without permission, but tonight the 7million residents of dallas have proof that a hack

attack can mean city-size trouble, as steve patterson reports what happened there is raising the alarm for a lot of american cities and towns. [ sirens ] >> reporter: it sounded like an air raid over dallas. >> that is not a drill. >> reporter: on friday night, all 156 of the city's emergency sirens screaming in unison into the early hours of saturday morning. >> they say alarms are coming from all over dallas. >> reporter: the cause, not a storm but a cyberattack, creating fear and confusion, clogging 911 for hours. more than 4,000 calls. the culprit unknown. >> this is like finding, you know, a needle in a haystack. >> reporter: the incident comes after years of warnings from the cyber security community about the danger hacking can cause to vital infrastructure. homeland security statistics pinpoint nearly 300 attacks reported on critical systems in 2015 alone. >> certainly those parts of our infrastructure that is readily accessible is vulnerable to these attacks. >> reporter: texas is one of the five most hacked states according to the tech firm digital guardian.

second only to california, where in san francisco an attack took light rail ticket machines off line during one of the busiest shopping weekends last year. >> we have reached a point where cyber crime is now pervasive. these kinds of attacks are happening all the time. >> reporter: sounding the alarms from the cyber security community for american cities. steve patterson, nbc news, los angeles. when we come back, the benefits of cycling. how for some it is turning back the clock on a debilitating disease.

everyone knows exercise is good for us, but cycling is getting some new attention now.

turns out it can help relieve the symptoms of parkinson's, a chronic and progressive disease that gets worse as people age. our medical correspondent dr. john torres on a simple and surprising discovery. >> reporter: you would never guess that judd stover has suffered from parkinson's disease for the last seven years, because he doesn't have tremors. he doesn't have muscle stiffness, and his feet don't shuffle when he walks. one big reason he's so active and symptom free? he said yes to a surprising new therapy. >> slow it down even more and better by doing this stuff, where do i sign up? >> reporter: what did he sign up for? a clinical trial using a simple treatment. >> how you feeling? >> feeling good. >> reporter: cycling. researchers at the cleveland clinic are finding cycling is helping patients stop the symptoms of parkinsons and can even do something that medicine can't -- slow down the progression of the disease itself. neuroscientist jay alberts made a

stunning discovery. cycling can increase certain proteins in the brain that help movement and cognitive function. and so these changes are similar to what happens when they're on medication? >> exactly right. when you have medication you have increased activation in this area. you have a similar increase in activation following exercise. so exercise is, in fact, medicine. >> reporter: to activate those changes in the brain, patients have to do forced exercise, which means they're working harder than they're used to doing, but it's that hard work that gives them the benefits. so get those benefits, what's the formula? cycling three times a week for 45 minutes at 80 to 09 rpms. >> i don't care what condition you're in. that's pretty strenuous. >> reporter: that formula has worked so well, alberts has taken the research out of the lab, and into the gym. >> the program returned me to normal or very close to normal. >> reporter: at 60 different ymcas across the country, now offering classes called pedaling for parkinson's. >> it is just like turning on a light

bulb. that was the difference between pedaling and not pedaling. >> each pedal stroke a step toward living a better life with parkinson's disease. >> that's my goal, better every day. >> reporter: dr. john torres, nbc news, cleveland. >> just fascinating. up next, a piece of world war ii history gets new life, thanks to a veteran who knows it well.

finally tonight, a relic of world war ii is about to ply the waters once again, this time in friendlier territory. it's all about a labor of love for a man who came of age serving aboard it and never forgot the experience. the story from nbc's kerry sanders in new

orleans. >> reporter: at 92 years old, it's natural to look back at history. >> the invasion fleet is moving towards france. >> reporter: especially when you were part of it as jim nierson was. >> welcome aboard, sir. great to have you pack back. >> reporter: that's jim in world war ii, a member of the crew on pt boat 305, and jim today. >> you don't see any enemy ships out there, do you? >> no. >> reporter: on the very boat where this 18-year-old boy quickly became a man. >> we all know that war is hell, but you don't think about it being hell. you just do your job. >> reporter: it's a marvel this pt boat jim was on is now once again operational. decommissioned as war surplus, she was used as a tour boat in new york city, an oyster boat in the chesapeake bay, until volunteers at the world war ii museum in new orleans began a ten-year passion project. refashioning her

mahogany hull, easy compared to finding original parts. >> we got pieces from all over the united states and all over the world. the radar dome came from a collector in australia. the engines came from a farmer in indiana who used them in tractor pulls. we found the sight for the torpedos on ebay. >> reporter: on ebay? >> on ebay, came out of pennsylvania. the only one we've seen in ten years. >> man your guns! >> reporter: everything is as it was during world war ii, except the machine guns are not real and there is no ammunition. in new orleans, the maiden voyage for paying customers set for later this month. tickets expensive, $350, but rides are already sold out for weeks. are and so many other people, thankfully, changed the course of history. >> uh, probably had a little bit to do with it. >> reporter: just like the greatest generation, you're modest.

pt 305 and crew sank enemy ships in the mediterranean. now she's a living link to the rapidly disappearing greatest generation. kerry sanders, nbc news on lake pontchartrain, new orleans. >> great addition down in new orleans. that is "nbc nightly news" for this sunday night. lester holt will be in tomorrow. i'm kate snow reporting from new york. i will see you tomorrow on msnbc. for all of us at nbc news, have a great night. rit n atix.sechi foa msinsanose

right now at 6:00, searching for a missing san jose state student. tonight a potential break through in the case. the news at 6:00 starts now. good evening and thank you for joining us tonight. i'm peggy bunker. >> and i'm terry mcsweeney, we're following a developing story. a 23-year-old kevin red rico may have been spot this evening. he's been missing since wednesday. his car found in benecia. >> and chuck coppola joining us now with the latest. and there is new news about the search this afternoon. >> reporter: very late news this afternoon. right now i'm standing alongside the highway 680 bridge over the carquinez straight and a group