U.S. Army Sgt. 1st Class Carolyn Sherratt, assigned to the 321st Tactical Psychological Operations Company, 16th Psychological Operations Battalion, and 1st Lt. Chad Cooper, assigned to the 1st Battalion, 77th Armor Regiment, 4th Brigade Combat Team, 1st Armored Division, demonstrate a counterfeit detection pen on Iraqi currency to Iraqi Police Col. Sadiq, commander of the Dhi Qar police media cell, at the Provincial Joint Command Center in Nasiriyah, Dhi Qar, Iraq, Jan. 4. Counterfeit currency has been an issue, and new measures are being taken by the police to combat the problem.