Which units are responsible for maintaining Link 16 network functions?

The responsibility for maintaining Link 16 network functions involves specific units that play crucial roles in ensuring network integrity and operational effectiveness. The Initial Entry JTIDS/MIDS Unit (IEJU) is integral in establishing and managing the Link 16 communication network, particularly during initial operations. Its primary function includes setting up the necessary equipment and ensuring that the units can effectively communicate.

The Network Time Reference unit is equally important as it provides accurate timing information necessary for synchronization among various Link 16 participants. This synchronization is critical for coordinating data exchanges and ensuring that all participants are operating with the same temporal reference, which is essential for tactical communications and situational awareness.

The choice that highlights the roles of both the Initial Entry JTIDS/MIDS Unit (IEJU) and the Network Time Reference captures the essence of network maintenance in Link 16 operations, as these two entities are key to deploying and sustaining network functionality. Other options that suggest additional units, like the Link 16 Manager or Grid Reference Unit, while they may contribute to network operations, do not specifically align as directly responsible for maintaining Link 16 network functions as the two identified.