09/27/1962
https://www.presidency.ucsb.edu...
"As a mark of respect to the memory of those who gave their lives when the U.S.S. THRESHER was lost off the Atlantic coast on Wednesday, April 10, 1963 it is hereby ordered pursuant to the provisions o..."
"I also direct that the flag shall be flown at half-staff for the same length of time at all United States embassies, legations, consular offices and other facilities abroad including all military faci..."
"The example of men and women rendering full-time service within the corps should motivate additional Americans to volunteer their services in their own communities."
"By virtue of the authority vested in me by the Civil Service Act (22 Stat. 403), and section 1753 of the Revised Statutes, and as President of the United States, it is hereby ordered as follows:"