A Polish Army tank takes part in the NATO Noble Jump exercise on a training range near Swietoszow Zagan, Poland, Thursday, June 18, 2015. (AP Photo/Alik Keplicz)

Bulls fight during the Maghesangranti festival at Talukachandani village in Nuwakot district near Kathmandu, Nepal January 15, 2016. The village organizes the bullfight during the Maghesangranti festival that commemorates the start of the holy month of Magh, ushering in the coming of warmer weather and longer days. (Photo by Navesh Chitrakar/Reuters)

A spotted owlet appears to be playing peek-a-boo near Rancharda Lake in Ahmedabad, India on February 9, 2016. The species is common across the Indian subcontinent. (Photo by Caters News Agency)

An actress dressed as Wonder Woman walks between visitors during the season inauguration of the Madrid Warner amusement park in San Martin de Valdeiglesias, near Madrid, Spain, March 18, 2016. (Photo by Andrea Comas/Reuters)

A seagull flies through a rainbow near the Savannah River and the open spillway at Thurmond Dam in Clarks Hill, SC, Monday, January 4, 2016. (Photo by Michael Holahan/Augusta Chronicle via AP Photo)

A giant storm cloud can be seen in the sky above swimmers near Mollymook Beach, south of Sydney, March 5, 2014. (Photo by David Gray/Reuters)

Football Soccer, France vs Iceland, EURO 2016, Quarter Final, Stade de France, Saint-Denis near Paris, France on July 3, 2016. Iceland fan. (Photo by Carl Recine/Reuters/Livepic)

A boy looks for scrap metal using an improvised magnetic tool near a construction site in New Delhi, India, March 21, 2016. (Photo by Cathal McNaughton/Reuters)