New York City policemen tangled with demonstrators at a subway station on the opening day of the New York World's Fair, April 22, 1964. Youths attempted to stall the train, which was headed from the city to the fairgrounds, as a form of protest on behalf of civil rights for blacks. (Photo by Charles Gorry/AP Photo)

Transgender Kendra Ferrari, 21, performs during Miss Night Queen beauty contest in Guatemala City, Friday, June 15, 2012. Ferrari won the pageant and will represent the transgender community for one year. (Photo by Rodrigo Abd/AP Photo)

These are the stomach-churning pictures of the swing at the end of the world – a rickety wooden swing hanging over a precipice 2,660 metres above sea level – and not a seatbelt in sight. (Photo by Caters News)

Throughout the course of the long war in Afghanistan, Coalition troops have relied on thousands of military working dogs to help keep them safe, and make their jobs easier. The dogs are trained to detect explosives, to find illegal drugs, to search for missing comrades, or target enemy combatants. Not only are they active on the front lines, but behind the lines they serve as therapy dogs, service dogs, and loyal companions. They also share the same risks as the ground troops, suffering injuries and sometimes death on the battlefields. Gathered here are images of these dogs and their handlers in Afghanistan and back home, from over the past several years, part of the ongoing series here on Afghanistan.

“Kimberly Noel “Kim” Kardashian (born October 21, 1980) is an American socialite, television personality, actress, model, and recording artist. She is the daughter of late attorney Robert Kardashian, and is known for a s*x tape with her former boyfriend Ray J as well as her E! reality series which she shares with her family, Keeping Up with the Kardashians. Kardashian's prominence has increased as of January 2011 with the premiere of Kourtney and Kim Take New York, the second spin-off of Keeping Up with the Kardashians (the first being Kourtney and Khloe Take Miami), debuting on E!, with the series following Kim and sister Kourtney Kardashian as they leave Los Angeles to open a third D-A-S-H store in New York City.

Kardashian has launched multiple fragrances, guest starred on numerous shows, competed on ABC's Dancing with the Stars, and has had roles in movies such as Disaster Movie and Deep in the Valley. In 2010, Kardashian, along with her sisters Kourtney and Khloe, released an autobiography, Kardashian Konfidential, and plan to launch their own fashion line”.

Photo: Socialite Kim Kardashian blows out her birthday cake candles at her birthday party at Les Deux on October 21, 2007 in Los Angeles, California. (Photo by Noel Vasquez/Getty Images). LOS ANGELES, CA – OCTOBER 21

Ukraine's Ruslana performs her song Wild Dance ands wins the Eurovision Song Contest on May 15, 2004 at the Abdi Ipekci Stadium, in Istanbul, Turkey. The event – hosted by last year's winners Turkey – also celebrates the 30th Anniversary of ABBA's win. (Photo by Christopher Furlong/Getty Images)

Artist Joe Hill poses on his 3D artwork, from the “Joe and Max” project as part of an advertising campaign, during its presentation at a park in Moscow, Russia, July 4, 2015. (Photo by Sergei Karpukhin/Reuters)

A beluga whale sprays water towards visitors during a summer attraction at the Hakkeijima Sea Paradise aquarium in Yokohama, suburban Tokyo on July 20, 2015. Tokyo's temperature climbed over 34 degree Celsius on July 20, one day after the end of the rainy season. (Photo by Toshifumi Kitamura/AFP Photo)