In April 1973, DCI James Schlesinger transferred the Technical Services Division of the Operations Directorate to the DS&T, where it would be renamed the Office of Technical Services (OTS).[1] Its primary focus was technical support of CIA case officers in the field, including development of exotic weapons and eavesdropping devices and production of forged documents.[7] It developed a poison pen and exploding seashells in an effort to assassinate Fidel Castro.[2]