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Zerok, Afghanistan

U.S. Army Engineer Staff Sgt. Rick Atkinson of Roswell, N.M., plays with a puppy that soldiers of Forward Operating Base Zerok adopted a few weeks ago. Oct. 7 marks the anniversary of the beginning of the Afghanistan war in 2001; eight years later, thousands of American and international troops are camped out in field bases around the war-torn country. Chris Hondros / Getty Images