97E
97E, pronounced "ninety seven echo" is the MOS code designating a Human Intelligence Collector in the US Army (formerly known as Interrogator Prisoner of War). 97E or "Echoes" as they are commonly called screen HUMINT sources and documents for priority information, conduct liaison meetings, interviews, and interrogation during wartime. Until recently, all 97Es were required to be ProFicient in a foreign language, which was often learned at the Defense Language Institute. Since the beginning of the wars in Afghanistan and Iraq, Echoes have proven to be in extremely short supply and this requirement has since been dropped.