Iraqi investigators from various units across the Al Anbar province, listen as U.S. Army Staff Sgt. Michael Kelly, from the Special Weapons Exploitation Team, 1st Brigade Combat Team, 82nd Airborne Division, explains how to properly process a crime scene at Al Asad Airbase, Iraq, Dec. 15, 2009. This class is a part of a week long course to instruct the Iraqi Police on advanced investigative skills.