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 Egypts 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. Marks 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 werent 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 todays attacks he has great confidence in the egyptian leader, but experts are not confident in what so far appears to be President Trumps 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 threemonth 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 highpowered guns in wisconsin and sent President Trump an antigovernment manifesto. Nbcs 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 dont know if the guy was the same person, we cant ask that question but were 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 dont know if hes 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 161page manifesto addressed to President Trump. Revolution. Its 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 doesnt care if you know him. This is the end game for him. Theres 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. Nbcs Kelly Odonnell has more on whats at stake. Reporter under the radar, no more. Rex tillerson, the media wary no comment. Reporter lowkey 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, thats what we need to be watching. Reporter tense relations. Damaged by russias protection of syrias assad regime and clouded by putins interference in the 2016 election, with ongoing investigations by congress and the fbi. In moscow, nbcs bill neeley. Reporter here in moscow, the kremlin wants clarity from Rex Tillerson. What is americas 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 syrias chemical attack. Their initial reaction was, assad didnt do it, the Syrian Government didnt do it. Reporter in 2013 putin promised that russias influence would stop assads 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 NationalSecurity 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 odonnell 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. Nbcs 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 jongun 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 regimes 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 chinas leader to rein in the north. The two met facetoface for the first time last week, just 48 hours after north koreas latest missile test. These are cautious times, with the u. S. Weighing options, north korea marking key anniversaries this month, and speculation kim jongun 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. Theres 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 nbcs sarah dollopp reports, it stems from a personal relationship. Reporter what began as an alleged affair between alabamas governor and an aide is at the center of an effort to impeach him. Hearings set to begin. Against twoterm 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 countrys 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 nbcs 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. Im standing on the train, im paying so much money. It is not worth it to me. Reporter experts say the derailments prove our Nations Railway system is simply too old. I think it should serve as a wakeup call. Its a realization of how fragile the entire system is. Reporter take new yorks penn station. More than 10 million riders pass through each year. Thats 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 cant go forward without federal commitment, it cant. 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 its the locks and dams in the midwest or its 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 trilliondollar infrastructure plan to congress, but wouldnt 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 citysize 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 citys 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 parkinsons, 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 parkinsons disease for the last seven years, because he doesnt have tremors. He doesnt have muscle stiffness, and his feet dont shuffle when he walks. One big reason hes 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 cant 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 theyre 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 theyre working harder than theyre used to doing, but its that hard work that gives them the benefits. So get those benefits, whats the formula . Cycling three times a week for 45 minutes at 80 to 09 rpms. I dont care what condition youre in. Thats 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 parkinsons. 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 parkinsons disease. Thats 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. Its all about a labor of love for a man who came of age serving aboard it and never forgot the experience. The story from nbcs