What is the Navy's primary digital communication system?

The Navy Multiband Terminal (NMT) serves as the primary digital communication system for the Navy due to its versatility and capability to operate across multiple frequency bands. This system is specifically designed to support a wide range of communication needs, including voice, video, and data transmission, making it essential for modern naval operations.

NMT is capable of interfacing with various satellite communication systems, ensuring that naval forces can maintain secure and reliable connectivity regardless of their operational environment. This adaptability is crucial for mission success, especially in joint operations where interoperability with other services and nations is necessary.

In contrast, the other options, while important, do not serve as the primary digital communication system. The Navy Secure Terminal focuses on secure communications but is not as versatile as the NMT. The Navy Communication System encompasses a broader framework that includes multiple components and does not refer to a singular primary system. Navy Satellite Communications is specifically about satellite communication capabilities, rather than the integrated and multifunctional approach that the NMT provides.