The Intelligence Specialists (IS) rating:
The Intelligence Specialist (IS) rating was established on July 26, 1975 by combining the Photographic Intelligenceman (PT) rating (established on April 10, 1957) and parts of the Yeoman (YN) rating.
The PT rating badge was hour glass that represented an image seen through a magnifying glass. The Sailors in this rating interpreted high-altitude aerial photos. Initial IS training (“A” School) was conducted at Lowry Air Force Base in Aurora, Colorado until 1984 when the school was moved to the Navy Marine Corps Intelligence Training Center (NMITC) in Dam Neck, VA.