Lyndon Johnson actually said...
Now, Therefore, I, Lyndon B. Johnson, President of the United States of America, do hereby designate Sunday, November 28, 1965, as a day of dedication and prayer, honoring the men and women of South Viet-Nam, of the United States, and of all other countries, who are risking their lives to bring about a just peace in South Viet-Nam.
Context
Proclamation 3686—Designating a Day of Dedication and Prayer for Those Risking Their Lives for Peace in Viet-Nam
11/05/1965