Which of the following is used for logistical support in the Navy?

The answer highlights MILSTRIP as a crucial component of logistical support in the Navy. MILSTRIP, which stands for Military Standard Requisitioning and Issue Procedures, is a system designed to facilitate the efficient handling of requisitions and the management of supplies across military branches, including the Navy. This standardized approach streamlines the process of ordering and managing inventory, ensuring that necessary supplies are available when and where they are needed, which is essential for maintaining operational readiness.

The other options represent different concepts or entities within the military framework, but they do not specifically pertain to logistical support processes. For example, SSN refers to nuclear-powered attack submarines, SSBN refers to ballistic missile submarines, and NATO is an international military alliance. While they are all integral to Navy operations, they do not directly relate to the logistics mechanisms like MILSTRIP, which is focused on the requisition and distribution of materials critical for mission success.