Afghan evidence-based operations course instructor Saeed Kalan and fellow students watch as their classmate obtains a fingerprint off the board during a crime scene practical exercise conducted at the Tarin Kowt, Police Training Center in Uruzgan province, Afghanistan, April 21 -24, 2013. (U.S. photo by Capt. Gina Goris, 2nd Armored Brigade Combat Team, 3rd Infantry Division)