measures system, electro-optical/infrared imaging devices and magnetic anomaly detection device aboard variants of the P-3 Orion. They acquire data necessary to identify surface or air contacts, and can also provide data to help search, localize, and track contacts of interest. SS3s aid in establishing attack parameters on a single, or multiple surface contact. Non-acoustic operators also work with the flight station and navigator to ensure safety-of-flight conditions are maintained. Aboard ship or on land ''Note: abbreviated as ASWMOD/ASWOC These AWs brief and debrief aircrews, filter through, organize, and relay intelligence collected during the mission in an aircraft carrier ASW module (ASMOD) or in a land-based ASW operations center (ASWOC). They coordinate ASW information-gathering throughout the battle group, operate various under-sea warfare and non-under-sea warfare related sensor systems to extract, analyze and classify data obtained; perform specified pre-flight, in-flight and post-flight operations in a multitude of naval aircraft serving anti-surface, USW, mine countermeasures, electronic, counter-narcotics, and land and sea rescue missions performance; operate tactical support center systems to analyze and classify USW and non-USW data; assist in aircrew briefing and debriefing; and provide data base information to the tactical commander for use in prescribing mission objectives and tactics. Previous platforms Past AW-crewed aircraft include aircraft carrier-based S-3 Viking and S-2 Tracker aircraft. They also flew in SH-3 Sea King and SH-2 Seasprite helicopters and P-2 Neptune patrol aircraft. Roots of the rating The "naval aircrewman" rating was originally called the "Aviation Antisubmarine Warfare Operator" rating (AW) and was established on 1 Sep 1968 by BuPers Note 1440 of 29 Feb 1968 and was redesignated Aviation Warfare Systems Operator by BuPers Note 1440 of 16 Nov 1993, without change of abbreviation. NavAdmin 092/05 of 2 May 2005 directed the consolidation of Enlisted Naval Aircrew (NAC) ratings into Naval Aircrewman (AW) with five subspecialities and eliminated the Aviation Warfare Systems Operator designation. See also List of United States Navy ratings References United States Naval Aviation 1910–1995, Appendix 14, Aviation Ratings Naval Historical Center http://www.navytimes.com/news/2008/05/navy_aircrewrating_052708w/ United States Navy ratings