A massive sand storm cloud is close to enveloping a military camp as it rolls over Al Asad, Iraq, April 27, 2005. (Photo by Cpl. Alicia M. Garcia, U.S. Marine Corps/Reuters/U.S. Department of Defense)

Spanish bullfighter Julian Lopez “El Juli” adjusts his montera (bullfighter's hat) before starting a bullfight at the Malagueta bullring in Malaga, southern Spain, April 4, 2015. (Photo by Jon Nazca/Reuters)

Period-costumed actors participate in the 150th anniversary re-enactment of the surrender of General Robert E. Lee to General Ulysses S. Grant at the Museum of Confederacy in Appomattox, Virginia, April 9, 2015. (Photo by Jay Paul/Reuters)

A visitor looks at a creation at the Artemide space during Milan Design Week, April 14, 2015. The Milan Design Week will be held until April 19. (Photo by Stefano Rellandini/Reuters)

A supporter of BJP dances during celebrations after learning of initial poll results outside the party headquarters in New Delhi, on May 16, 2014. (Photo by Anindito Mukherjee/Reuters)

Colombia fans celebrate a goal during the World Cup Group C soccer match between Colombia and Greece, at a park in Bogota June 14, 2014. (Photo by John Vizcaino/Reuters)

A participant of the “Zombie Takeover of Coney Island” acts like a zombie as he walks along Surf Avenue in Coney Island in the Brooklyn borough of New York, July 2, 2014. (Photo by Carlo Allegri/Reuters)

Krista Long began snapping pics of people sliding down a water slide after many visits to the local water park with her tween daughters. The result is an action-packed series that show emotions ranging, she says, “from pure joy to fear, in anticipation of the inevitable splash-down!” (Photo by Krista Long)