Franklin Roosevelt actually said...
The tract of land hereby restored to the Territory of Hawaii shall revert to the jurisdiction and control of the War Department as part of the Fort Ruger Military Reservation if not used by the said Territory as 'a water-reservoir site and purposes incident thereto' within 1 year from the date of this order.
Context
Executive Order 6468—Restoring to the Territory of Hawaii a Part of the Fort Ruger Military Reservation
11/28/1933