Did you know that Captain Jack S. Holtwick, Jr., USN is credited with establishing the Communications Technician (CT) rating for the U.S. Navy in 1948?

Because the work was accomplished by both yeoman and radioman specialties, he took the spark from the radioman rating badge and the quill from the yeoman rating badge and combined them to create the CT rating badge. On March 25, 1976, the title Communications Technician changed to Cryptologic Technician.