Information systems technician (IT) is a rating for United States Navy and United States Coast Guard enlisted personnel, specializing in communications technology. Information systems technician submarines (ITS) is a rating for U.S. Navy submariners. Information systems technician is a U.S. Navy and Coast Guard specific job, also known as an enlisted rating (often called MOS by other armed services). The other U.S. Armed Forces have similar positions, but with different titles utilized (information technology specialist in the U.S. Army, data network specialist in the U.S. Marine Corps)