When does the Network Early Access (NEA) milestone occur?

The Network Early Access (NEA) milestone is a critical point in the project timeline that occurs when the general contractor (GC) permits client teams to begin network activities. This milestone signifies that essential infrastructure is in place and is ready for the client's operational use, indicating a key transition from construction to the commencement of networking tasks. This access enables client teams to prepare and engage with the network systems which are vital for the ongoing development of the project operations.

The other options do not correctly represent the NEA milestone's purpose or timing. Completing the entire project or having fully operational construction zones occurs later in the project timeline, while the Master Punch List, which consists of outstanding tasks that need to be completed before final project turnover, is not directly related to the initiation of network activities. Therefore, the valid context of the NEA is about enabling network-level work rather than indicating overall project completion or operational readiness.