This September 11, 2002, photo shows, K9 Search Specialist Denise Corliss and her search dog Bretagne in Houston, Texas. Bretagne the last known living 9/11 search dog has died in a Houston suburb at age 16. Bretagne was 2 years old when she and her handler, Corliss, were part of the Texas Task Force 1 sent to the World Trade Center site in Lower Manhattan after the terrorist attack brought down the buildings on Sept. 11, 2001. (Photo by D. Fahleson/Houston Chronicle via AP Photo)





Bretagne the last surviving search and rescue dog from 9/11 is walked by her handler Denise Corliss past a flank of members of the Cy-Fair Volunteer Fire Department, as she was brought into the Fairfield Animal Hospital, Monday, June 6, 2016, in Cypress, Texas to be euthanized. (Photo by Karen Warren/Houston Chronicle via AP Photo)





A picture made available on 07 June 2016 shows a Soviet monument, disassembled by people, near an urban-type settlement Olesko, Lviv region, western Ukraine, 06 June 2016. Ukraine approved the law on the decommunization of the country in May 2015. The country's deputies ordered to rename more than 160 cities and villages. Additionally, the Ukrainian Ministry of Culture gave way to demolish about 800 Soviet monuments. (Photo by Pavlo Palamarchuk/EPA)





US paratroopers from the 82 Airborne Division and Lockheed C-130 Hercules aircraft are seen in the air during the Swift Response-16 part of the NATO Anaconda-16 exercise at the military area near Torun, Poland, 07 June 2016. About 2 thousand paratroopers from Poland, USA and Great Britain took part in a landing exercise as part of the The Polish-led multinational exercise Anaconda-16, conducted with allies and partners from 24 countries between 07 and 17 June 2016, which is to test and enhance the capabilities of NATO countries to quickly respond to threats regardless of distance and origin. (Photo by Tytus Zmijewski/EPA)





Football Soccer, Sweden vs Moldova, UEFA Women's Euro 2017 Group Stage, Qualifying Group Four, Gamla Ullevi arena, Gothenburg, Sweden on June 6, 2016. Sweden's Olivia Schough cheers after the opening goal. (Photo by Thomas Johansson/Reuters/TT News Agency)





A zoo performer smiles as he puts his head between the jaws of a crocodile during a performance for tourists at the Sriracha Tiger Zoo, in Chonburi province, east of Bangkok,Thailand, June 7, 2016. (Photo by Chaiwat Subprasom/Reuters)





A mine-clearing line charge is fired during an Israeli miltary combined forces drill in Shizafon base, near Eilat in southern Israel June 7, 2016. (Photo by Amir Cohen/Reuters)





An Israeli military bulldozer and a tank (R) are seen during a combined forces drill in Shizafon military base, near Eilat in southern Israel June 7, 2016. (Photo by Amir Cohen/Reuters)





An Israeli air force F-15 fighter jet flys over Ramon Crater near Mizpe Ramon in southern Israel June 7, 2016. (Photo by Amir Cohen/Reuters)





Employees of Germany's biggest retailer Metro AG take a selfie as they kiss HI-4, a life-size humanoid robot, at Metro's headquarters in Duesseldorf, Germany, June 7, 2016. The android, modelled after its Japanese inventor Hiroshi Ishiguro, a professor at Osaka's University, is made of a metal skeleton, plastic skull and silicon skin; and can be used as a human substitute for interaction via a tele-operated control system. (Photo by Wolfgang Rattay/Reuters)





A Starship Technologies commercial delivery robot crosses a street during a live demonstration in front of the headquarters of Metro AG in Duesseldorf, Germany, June 7, 2016. The six-wheel electrical delivery robot, designed by Skype founders Ahti Heinla and Janus Friis, can autonomously navigate and carry a maximum load of 20 kilograms over a distance of six kilometres from its base station at a maximum speed of six km/h. (Photo by Wolfgang Rattay/Reuters)





Football Soccer, Euro 2016, Belgium team departure, Zaventem airport, Belgium on June 7, 2016. Brussels Airlines flight attendants pose inside a turbine engine. (Photo by Francois Lenoir/Reuters)





Visitors are reflected in a glass of a pool with fish at the International agriculture exhibition “BELAGRO-2016” in Minsk, Belarus June 7, 2016. (Photo by Vasily Fedosenko/Reuters)





A Venezuelan National Guard covers a woman as they run away from tear gas during a rally to demand a referendum to remove President Nicolas Maduro in Caracas, Venezuela, June 7, 2016. (Photo by Carlos Garcia Rawlins/Reuters)





An opposition supporter shouts in front of riot policemen during a rally to demand a referendum to remove President Nicolas Maduro in Caracas, Venezuela, June 7, 2016. (Photo by Carlos Garcia Rawlins/Reuters)





Opposition supporters recover from tear gas next to riot policemen during a rally to demand a referendum to remove President Nicolas Maduro in Caracas, Venezuela, June 7, 2016. (Photo by Carlos Garcia Rawlins/Reuters)





An opposition supporter uses Venezuela's flag colors as she attend a rally to demand a referendum to remove President Nicolas Maduro in Caracas, Venezuela, June 7, 2016. (Photo by Ivan Alvarado/Reuters)





An opposition supporter argues with riot policemen during a rally to demand a referendum to remove President Nicolas Maduro in Caracas, Venezuela, June 7, 2016. (Photo by Ivan Alvarado/Reuters)





A Palestinian girl prays in front of the Dome of the Rock, at the compound known to Muslims as Noble Sanctuary and to Jews as The Temple Mount, in Jerusalem's Old City during the holy month of Ramadan June 7, 2016. (Photo by Ammar Awad/Reuters)





French police forces take part in a mock attack drill in the fan zone in the centre of Lyon, France, as part of security measures for the UEFA 2016 European Championship, June 7, 2016. (Photo by Robert Pratta/Reuters)





Singer Christina Aguilera performs onstage during the “Hillary Clinton: She's With Us” concert at The Greek Theatre on June 6, 2016 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)





A file picture dated 03 June 2016 shows a woman standing in front of two images of Mona Lisa with plastic surgery suggestions in Bonn, Germany. The pieces are a part of an exhibition titled “Eva's Beauty Case” which will be shown at the LVR Industrial Museum in Bonn from 09 June 2016 to 22 January 2017. (Photo by Oliver Berg/EPA)





People wander through a maze of mirrored panels that create many reflections at the National Gallery of Victoria International on June 7, 2016 in Melbourne, Australia. The installation, titled “Semicircular Space” is by the Danish contemporary artist Jeppe Hein and will occupy the NGV International Federation Court from 4 June – 16 September 2016. (Photo by Scott Barbour/Getty Images)





A diver swims among fish in an exhibit to emulate sea creatures in efforts to send a message that pollutants such as nets and plastic bags will entangle marine animals, making it difficult for them to breathe or eat, at the S.E.A. (South East Asia Aquarium), Resorts World Sentosa, on Tuesday, June 7, 2016, in Singapore. This is part of efforts by the aquarium to educate visitors on the threats facing the oceans and the importance of protecting them as part of their 10-day celebration of World Ocean Day which falls on June 8. (Photo by Wong Maye-E/AP Photo)





The pack rides during the second stage (Cluses – Saint – Vulbas) of the 68th edition of the Dauphine Criterium cycling race on June 06, 2016 in Saint-Vulbas. (Photo by Lionel Bonaventure/AFP Photo)





A dog passes by a graffiti of Republican presidential candidate Donald Trump in Barcelona on June 7, 2016. (Photo by Josep Lago/AFP Photo)





Michaele Lee Jr., 4, center, is swung by his mother Chinquenta Bell, right, and aunt Shaquenta Bell, during a procession down the street where Muhammad Ali grew up following a community memorial service outside his childhood home Monday, June 6, 2016, in Louisville, Ky. In a city accustomed to capturing the world's attention for just two minutes during the Kentucky Derby each year, Ali's memorial service Friday looms as one of the most historic events in Louisville's history. Former presidents, heads of nations from around the globe, movie stars and sports greats will descend upon the city to pay final respects to The Louisville Lip. (Photo by David Goldman/AP Photo)





Turkish security officials and firefighters work at the explosion site after a bus carrying riot police official was struck by a bomb in Istanbul, Tuesday, June 7, 2016. At least five police officers were wounded. The blast occurred at a busy intersection near an Istanbul University building in the city's Beyazit district during the morning rush hour. (Photo by DHA via AP Photo)





An aerial view of the in progress installation “The Floating Piers” by Bulgarian-born artist Christo Vladimirov Yavachev known as Christo, on the Lake Iseo, northern Italy, Tuesday, June 7, 2016. Some 200,000 floating cubes create a 3-kilometers runway to be clad in bright yellow fabric and connecting the town of Sulzano to the small island of Monte Isola on the Iseo Lake for a 16-day outdoor installation opening on June 18 through July 3. (Photo by Luca Bruno/AP Photo)





Cassim Jaffalie,3, stands with his friends at their family home in this Monday, May, 23, 2016 photo in Machinga about 200 kilometres north east of Blantyre Malawi.His father Razik Jaffalie gave up his work as a bicycle taxi operator to protect his son in a country where there has been an increase in albinism attacks. At least 18 Albino people have been killed in Malawi in a “steep upsurge in killings” since November 2014, and five others have been abducted and remain missing, a new Amnesty International report released Tuesday, June 7, 2016 says. (Photo by Tsvangirayi Mukwazhi/AP Photo)





A supporter of the PHTK presidential candidate Jovenel Moise pours beer into the skeleton skull meant to represent interim President Jocelerme Privert in a mock coffin, during a voodoo ceremony, before the start of a protest march demanding his resignation in Port-au-Prince, Haiti, Tuesday, June 7, 2016. The electoral council of Haiti has decided to re-do a presidential election that a special commission determined was marred by fraud. (Photo by Dieu Nalio Chery/AP Photo)





Iraqi counterterrorism forces take their lunch on their front line position during an operation to oust Islamic State militants from Fallujah, Iraq, Tuesday, June 7, 2016. It's the first fasting day of the Muslim holy month of Ramadan – the country's most influential Shiite cleric said Monday that Iraqi fighters could obtain from the Ramadan fast if they thought it impaired their ability on the battlefield. (Photo by Maya Alleruzzo/AP Photo)





A graffiti mural of boxer Muhammad Ali and singer Prince – who would have been 58 today – in Camberwell, south London on Tuesday June 7, 2016 as actor Will Smith and former world heavyweight boxing champion Lennox Lewis will be pallbearers at Muhammad Ali's funeral, it has been announced. Smith, who portrayed Ali in the 2001 film about the boxer's life, and Lewis will be among up to 15,000 people expected to attend the funeral service in Ali's home town of Louisville, Kentucky on Friday. (Photo by Yui Mok/PA Wire)





A woman runs in the heavy surf with her dog at Sunset Beach in Treasure island, Fla., Monday, June 6, 2016, as Tropical Storm Colin churns in the Gulf of Mexico. Colin was expected to make landfall somewhere along Florida's gulf coast. (Photo by Chris O'Meara/AP Photo)





Actress Paula Patton signs autographs for fans during the premiere of Universal Pictures' “Warcraft” at TCL Chinese Theatre IMAX on June 6, 2016 in Hollywood, California. (Photo by Mike Windle/Getty Images)