What is the composition of a Sea Echelon (TA22)?

The Sea Echelon (TA22) is designed to be a versatile and robust unit capable of extending operational capabilities for the Naval Construction Force. Its composition includes one officer and 25 enlisted personnel, which reflects the specific structure and mission alignment needed for effective deployment.

Moreover, the TA22 is self-sufficient for 60 days, allowing it to operate independently without needing resupply or direct support from other units. This autonomy is crucial for missions that may occur in remote locations or require sustained operations without immediate access to logistics.

The unit is also deployable within 6 days, which underscores its readiness and the strategic importance of mobility in military operations. Rapid deployment is essential in responding to various missions, whether they are humanitarian assistance or combat operations.

The comprehensive capability of the Sea Echelon encompasses all these aspects—human resource structure, sustainability, and quick deployability—making 'All of the above' the correct choice, as it accurately captures the full scope of what the TA22 entails.