In this picture taken with low shutter speed, Ferrari driver Sebastian Vettel of Germany steers his car during the qualifying session at the Formula One Bahrain International Circuit, in Sakhir, Bahrain, Saturday, April 2, 2016. He sets the third fastest time. The Bahrain Formula One Grand Prix will be held on Sunday. (Photo by Luca Bruno/AP Photo)





Cyprian Kotut of Kenya, left, rests after winning the 40th Paris Marathon men's race, as Laban Korir of Kenya, right, celebrates second place, in Paris, Sunday April 3, 2016. Cyprian Kotut won the Paris marathon on Sunday as Kenyan runners pulled off a podium sweep in perfect weather conditions. The 24-year-old Kotut, who also won the Paris half-marathon last month, completed the 42.195-kilometer (26-mile) race in 2 hours, 7 minutes and 11 seconds to improve his personal best set last year when finishing runner-up in Milano on his debut over the distance (2:08.55). (Photo by Thibault Camus/AP Photo)





In this March 29, 2016 photo, Mitch Xia, left, rallies with other organizers during a march on Franklin Street against N.C. House Bill 2 in Chapel Hill, N.C. The new state law requires transgender people to use the restroom of their biological gender, not the gender with which they identify. Stung by setbacks related to their access to public restrooms, transgender Americans are taking steps to play a more prominent and vocal role in a nationwide campaign to curtail discrimination against them. (Photo by Whitney Keller/The Herald-Sun via AP Photo)





Indian Kashmiri Muslims pray before a priest shows a relic believed to be hair from the beard of Prophet Muhammed during special prayers on the death anniversary of Abu Bakr Siddiq, the first Caliph of Islam at the Hazratbal Shrine in Srinagar on April 1, 2016. Thousands of Kashmiri Muslims gathered at the shrine in the summer capital of Jammu and Kashmir to offer special prayers. (Photo by Tauseef Mustafa/AFP Photo)





Rescuers work at a rear-end collision site at a expressway on April 2, 2016 in Changzhou, Jiangsu Province of China. The traffic accident happened in Changzhou Saturday after killed two people and another 29 injured. (Photo by VCG/VCG via Getty Images)





Amtrak investigators inspect the deadly train crash in Chester, Pa., Sunday, April 3 2016. The Amtrak train struck a piece of construction equipment just south of Philadelphia causing a derailment. (Photo by Michael Bryant/The Philadelphia Inquirer via AP Photo)





A Sri Lankan candy floss vendor awaits customers by a road side at dusk as light emits from burning garbage from behind an adjacent house, right, in Colombo, Sri Lanka, Sunday, April 3, 2016. The Colombo Port is seen silhouetted far behind. (Photo by Eranga Jayawardena/AP Photo)





Chicago Blackhawks right wing Patrick Kane (88) celebrates his goal against the Boston Bruins during the first period of an NHL hockey game Sunday, April 3, 2016, in Chicago. (Photo by Jeff Haynes/AP Photo)





Factoria Teatro company member Teresa Espejo performs a piece from Miguel de Cervantes on public transport in Rome, Italy, April 1, 2016. (Photo by Susana Vera/Reuters)





Suspected members of the Islamic State group wait to be taken for interrogation after being found among civilians returning to Ramadi for the first time since the city was taken back by Iraqi government forces earlier this year, in Ramadi, Iraq, Sunday, April 3, 2016. (Photo by Khalid Mohammed/AP Photo)





A couple embrace next to a man sleeping on a park bench in downtown Ciudad Juarez, Mexico April 2, 2016. (Photo by Jose Luis Gonzalez/Reuters)





The New Shepard rocket booster lands in this handout photo provided by Blue Origin, in West Texas April 2, 2016. Jeff Bezos' space transportation company Blue Origin successfully launched and landed for the third time a suborbital rocket capable of whisking six passengers off their home planet, taking another step on the company's quest to develop reusable boosters, the company said on Saturday. (Photo by Reuters/Blue Origin)





Firefighters work to extinguish a fire at the Russian Defence Ministry's building in central Moscow, Russia, April 3, 2016. (Photo by Maxim Zmeyev/Reuters)





A man takes a photo with his cell phone of an airplane that made an emergency landing in the waters of the Mediterranean sea off the shore of Tel Aviv, Israel, April 3, 2016. (Photo by Baz Ratner/Reuters)





A local tourist poses in front of Mayon volcano in Daraga, Albay in central Philippines April 3, 2016. (Photo by Erik De Castro/Reuters)





A couple stands next to a poster depicting Dutch politician Geert Wilders and Russian President Vladimir Putin kissing, at a metro station in Amsterdam April 3, 2016. (Photo by Cris Toala Olivares/Reuters)





Sofia Pavlovska and Anastasiya Dusanska of Ukraine, who both live in The Hague, pose during the demonstration on the EU referendum at the Dam Square in Amsterdam, the Netherlands April 3, 2016. (Photo by Cris Toala Olivares/Reuters)





An Armenian volunteer is seen in the town of Askeran, near where clashes with Azeri forces are taking place, in Nagorno-Karabakh region, which is controlled by separatist Armenians, April 2, 2016. Picture taken April 2, 2016. (Photo by Hrayr Badalyan/Reuters/PAN Photo)





An Armenian soldier of the self-defense army of Nagorno-Karabakh stands near an artillery unit in the town of Martakert, where clashes with Azeri forces are taking place, in Nagorno-Karabakh region, which is controlled by separatist Armenians, April 3, 2016. (Photo by Vahram Baghdasaryan/Reuters/Photolure)





Armenian volunteers make preparations before making their way to Nagorno-Karabakh region, which is controlled by separatist Armenians, where clashes with Azeri forces are taking place, in Yerevan, Armenia, April 3, 2016. (Photo by Hayk Baghdasaryan/Reuters/Photolure)





A girl, bound with a scarf from the cold, marches in the annual Greek Independence Day Parade on Danforth Avenue in Toronto, Ontario April 3, 2016. (Photo by Chris Helgren/Reuters)





A guard of honour waits to welcome Sudanese President Omar Hassan al-Bashir during a peace campaign rally in Zalingei airport in Darfur, April 3, 2016. (Photo by Mohamed Nureldin Abdallah/Reuters)





A student prepares to search a classroom in a middle school for a shooter during an Active Shooter Response course offered by TAC ONE Consulting in Denver April 2, 2016. According to TAC ONE, the course, which is offered for the first time to concealed weapons permit carrying civilians, is designed at preparing people to effectively save lives prior to the arrival of law enforcement at an active shooter incident. (Photo by Rick Wilking/Reuters)





Vanessa James and Morgan Cipres of France during the Pairs Short Program at the ISU World Figure Skating Championships at TD Garden in Boston, Massachusetts, April 1, 2016. (Photo by Timothy A. Clary/AFP Photo)





An Irish dancer celebrates in front of her competitors after winning the under 14's World Irish Dance Championship on April 2, 2016 in Brighton, England. The 8th World and 11th European Irish Dance Championships sees over 1500 dancers from 26 countries, speaking over 20 languages, competing in a variety of contests at the Brighton Centre on the city's beachfront. The event is organised by the World Irish Dance Association and is billed as the “Irish Dance Spectacular”. (Photo by Chris Ratcliffe/Getty Images)





A man cleans a tomb of his deceased relatives at the Babaoshan cemetery on the Qingming Festival in Beijing, Sunday, April 3, 2016. Qingming festival, also known as the Grave Sweeping Day, is a day when Chinese around the world remember their dearly departed and take time off to clean up the tombs and place flowers and offerings. (Photo by Andy Wong/AP Photo)





A wreckage bus after crashing with passenger train at accident site in Nakhon Chai Si district, Nakhon Pathom province, Thailand, 03 April 2016. At least three people were killed and nearly 30 others injured after a passenger train crashed into a tourist bus on a crossing railway, media reports. (Photo by EPA/Stringer)





A group of skier climbs the 'Col du Pacheu' during the 69th edition of the “Trophees du Muveran”, a Ski Mountaineering race throught the Swiss Alps, above Les Plans-sur-Bex, Switzerland, 03 April 2016. (Photo by Laurent Gillieron/EPA)





People sit next to a tree covered with hangers, symbolizing an illegal abortion, in front of the Polish parliament after a demonstration against a possible tightening of the country's abortion law, already one of the most restrictive in Europe, in Warsaw, Poland, Sunday, April 3, 2016. Rallies in Warsaw and other cities are being held under the slogan “No to the Torture of Women” and come as the influential Roman Catholic church launches a campaign for a total ban on abortion, something supported by Prime Minister Beata Szydlo and ruling party leader Jaroslaw Kaczynski. (Photo by Alik Keplicz/AP Photo)





Ethnic Chinese Malaysians visit the graves of their ancestors at a cemetery on the eve of the annual “Qingming” festival in Kuala Lumpur on April 3, 2016. Qingming, also known as Tomb-Sweeping Day, is an annual Chinese festival to commemorate the dead. Families visit and clean the graves of their ancestors, burning incence, paper money and presenting offerings such as food, tea, wine and joss paper accessories. (Photo by Manan Vatsyayana/AFP Photo)





Action from the Lamb National at Ascot racecourse on April 03, 2016 in Ascot, England. (Photo by Alan Crowhurst/Getty Images)





Men dressed in ancient Roman costumes walk in front of a bicycle rental store along the ancient Appian Way, in Rome, Sunday, April 3, 2016. (Photo by Beatrice Larco/AP Photo)





Airport workers wave as a Brussels Airlines plane taxis towards the runway at Brussels Airport, in Zaventem, Belgium, Sunday, April 3, 2016. Under extra security, three Brussels Airlines flights, the first for Faro in Portugal, were scheduled to leave Sunday from an airport that is used to handling about 600 flights a day. (Photo by Benoit Doppagne/Pool Photo via AP Photo)





Romanian soldiers are seen through the flame of unknown soldier while standing in attention during celebrations marking the NATO Day in Bucharest 03 April 2016. Romania became a full member of NATO on 02 April 2004. (Photo by Bogdan Cristel/EPA)