U.S. Army soldier SPC Collin Pallesen of "Attack" Co, 2nd Battalion, 1st Infantry Regiment plays with an Afghanistan dog named "Tango" before heading out of Combat Outpost Kandalay to patrol in Zharay district, in Kandahar province, southern Afghanistan October 27, 2012. "Tango" always comes with the platoon during patrols, Pallesen said. REUTERS/Erik De Castro ( AFGHANISTAN )