What is a common characteristic of the S-3 Viking, SH-3 Sea King, and SH-2 Seasprite?

The correct response highlights that the S-3 Viking, SH-3 Sea King, and SH-2 Seasprite were specifically designed for antisubmarine warfare. This characteristic is crucial because each of these aircraft serves or served a key role in detecting and neutralizing submarines, which is a significant aspect of naval operations.

The S-3 Viking, for instance, was extensively used by the U.S. Navy with its capability to operate from aircraft carriers and conduct anti-submarine missions with advanced sensors and weapons systems. Similarly, the SH-3 Sea King has a long history as a dedicated anti-submarine helicopter, equipped with sonar buoys and torpedoes, capable of both shipboard and shore-based operations. The SH-2 Seasprite, although it has multi-mission capabilities, was also equipped for anti-submarine tasks, making it an essential tool in fleet defense against underwater threats.

This clear focus on antisubmarine warfare distinguishes these aircraft from the options presented, which would not collectively describe all three in the same manner.