Section III of the 2015 Cooperative Strategy for 21st Century Seapower (CS-21) details five functions essential to support our National Security (all domain access, deterrence, sea control, power projection, and maritime security). Select a major region (e.g., INDOPACOM , NORTHCOM, CENTCOM, SOUTHCOM, AFRICOM, or EUCOM) and explain in detail which essential function is the most important for the near term regarding our National Security.