Franklin Roosevelt actually said...

At no time shall any person, other than persons on public vessels of the United States, enter Culebra Island Naval Defensive Sea Area

At no time shall any person, other than persons on public vessels of the United States, enter any of the naval defensive sea areas herein se...

nor shall any vessel or other craft, other than public vessels of the United States, be navigated into said area, unless authorized by the S...

At no time shall any aircraft, other than public aircraft of the United States, be navigated into any of the naval airspace reservations her...