A woman, wearing a traditional Sevillana dress, performs as she asks for alms in downtown Malaga, Spain, April 28, 2016. (Photo by Jon Nazca/Reuters)

A mother bear takes a dip in the water to cool off in the warm summer sun but refuses to leave her three youngsters behind – so they climb aboard her back. (Photo by Jon Langeland/Solent News & Photo Agency)

U.S. Rep Steve Southerland grins after winning an auctioned possum during the Wausau Possum Festival on Saturday, August 2, 2014, in Wausau, Fla. What is usually a must-attend event for statewide candidates was notably lacking of them this year, perhaps because candidates who now raise tens of millions of dollars focus more on television ads than making personal contact. But not attending is a missed opportunity, said Susan MacManus, a University of South Florida political science professor who drove more than 350 miles for the festival. (Photo by Heather Leiphart/AP Photo/The News Herald)

Members of an American landing party assist troops whose landing craft was sunk by enemy fire off Omaha beach, near Colleville sur Mer, France, June 6, 1944. REUTERS/Weintraub/US National Archives

German troops in Stalingrad, USSR. September 10, 1942. (Photo by TASS)

A performer takes part in the annual street parade, which is part of the Carnival of Cultures celebrating the multi-ethnic diversity of the city, in Berlin, Germany on May 20, 2018. (Photo by Hannibal Hanschke/Reuters)

Ammunition airlift into besieged Khe Sanh, Operation Pegasus, April 1968. (Photo by Larry Burrows/AP Photo)

People take pictures as an Airbus Beluga XL transport plane lands during its first flight event in Colomiers near Toulouse, France, July 19, 2018. The Beluga XL, the new cargo plane of the Airbus family has taken off from Blagnac, in the south of France, for its first test flight. The launch of the aircraft triggered thunderous applause in an audience of more than 10,000 people, mostly employees and subcontractors of the European aircraft manufacturer. (Photo by Regis Duvignau/Reuters)