05/06/1951
https://www.presidency.ucsb.edu...
"We are glad to welcome you."
"I hope you have an enjoyable visit, and that you will go back with information that will be helpful to you and to your country."
"Any person navigating an aircraft within this airspace reservation in violation of the provisions of this order will be subject to the penalties prescribed in the Civil Aeronautics Act of 1938 (52 Sta..."
"I have today signed an Executive Order prescribing minimum standards for the classification, transmission and handling of official information relating to the security of the Nation."