What does SIS stand for?

Senior Intelligence Service

This definition appears very rarely and is found in the following Acronym Finder categories:

Military and Government

Other Resources:

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Scientific Instrument Society Secondary Items Study Secret Intelligence Service (MI6) Sections Internationales de Sèvres (French bilingual school) Secure Information Sharing Security Information Systems SegainterSettle AG (Swiss Central Securities Depository) Selective Inquiry System Semester in Spain (various schools) Semiconductor Insulator Semiconductor		Senologic International Society Sensor & Instrumentation System Sensor Image Simulator Sensory Index Score Seoul International School Sequential Importance Sampling Serial Interface Server Server Infrastructure Strategy Services Information System (North Carolina) Servicios Israelis de Seguridad (Guatemalan security firm)

Samples in periodicals archive:

Several are at the flag-rank Senior Executive Service (SES) or Senior Intelligence Service (SIS) level or have served as Assistant Secretaries in federal departments.

The Postgraduate Intelligence Program for reserves a ten-year ...

Glanton was a member of the Senior Intelligence Service from 1996-2000 and served in the United States Coast Guard from 1966-1970.

Universal Guardian Announces the Appointment of William Glanton to ...