Flight crews and air mechanics trained at Ewa Field for the upcoming Pacific War, including Battles at Wake Island, Guadalcanal, and Midway.

The many aircraft fighting and patrolling the South West Pacific theatre of war needed ongoing maintenance.

These units specialized on the Navy's land-based PB4Y-1 Liberator patrol bomber and later the Consolidated PB4Y-2 Privateer aircraft.

Blimp HedRon operated much like Carrier Aircraft Service Units but specialized in fabric damage and helium handling.

Lighter-than‑air operations extended into the South Atlantic and Caribbean areas (for example from Naval Base Trinidad).

Seaplane Tenders were able to do repair and maintenance and had all the supplies needed to operate in remote forward bases for months.

Seaplane tenders acted as barracks, supply depots, workshops, air mechanic and control towers for the planes.