Seized plastic handguns which were created using 3D printing technology are displayed at Kanagawa police station in Yokohama, south of Tokyo, in this photo taken by Kyodo May 8, 2014. Yoshimoto Imura became the first man to be arrested in Japan for illegal possession of two guns he created himself using 3D printing technology, Japanese media said on Thursday. The 27-year-old, a college employee in the city of Kawasaki, was arrested after police found video online posted by Imura claiming to have produced his own guns. Gun possession is strictly regulated in Japan. Police raided Imura's home and found five guns, two of which could fire real bullets, Japanese media said. (Photo by Reuters/Kyodo)

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.

A woman waits to hear about her sister, a teacher, following a shooting at the Sandy Hook Elementary School in Newtown, Connecticut. A man killed his mother at their home and then opened fire inside the elementary school where she taught, massacring 26 people, including 20 children, as youngsters cowered in fear to the sound of gunshots reverberating through the building and screams echoing over the intercom. (Photo by Jessica Hill/Associated Press)

A screen grab from a police body camera video shows the pilot of a plane that crashed on railway tracks being rescued by Los Angeles Police Department officers moments before a train hit the aircraft in Los Angeles, California, U.S. January 9, 2022. (Photo by LAPD/Handout via Reuters)

Frost covers a face shield of a volunteer before the start of the women's 7.5km + 7.5km skiathlon cross-country skiing competition at the 2022 Winter Olympics, Saturday, February 5, 2022, in Zhangjiakou, China. (Photo by Alessandra Tarantino/AP Photo)

Itzhak de Laat of Team Netherlands crashes during the Men's 500m Heats on day seven of the Beijing 2022 Winter Olympic Games at Capital Indoor Stadium on February 11, 2022 in Beijing, China. (Photo by Toby Melville/Reuters)

A man takes a photo of a mural entitled “Thank goodness Silvia is here” (Meno male che Silvia c'è), representing former Italian prime minister and presidential candidate Silvio Berlusconi dressed as a woman, by Italian street artist Salvatore Benintende aka TvBoy, on January 21, 2022 in Milan. (Photo by Piero Cruciatti/AFP Photo)

In this photo released by Xinhua News Agency, a passenger jet that veered off a runway during take-off and caught fire is seen in the aftermath in Chongqing Jiangbei International Airport in southwestern China's Chongqing Thursday, May 12, 2022. The Chinese passenger jet left the runway upon takeoff and caught fire in western China on Thursday morning, and several people were injured. (Photo by Liu Chan/Xinhua via AP Photo)