S-3 VikingLockheed S 3 Viking airplane model. The Lockheed S 3 aircraft was originally developed with Anti Submarine Warfare (ASW) as its primary mission. Now, the S 3B Aircrafts role in Carrier Aviation is changing focus. The S 3B Aircrafts ASW and Mining Warfare missions were deleted by Chief of Naval Operations Message in December 1999. Deconfiguration of aircraft, in compliance with removal of ASW specific equipment, was accomplished in accordance with AFC