"Because the Normandy invasion was such a momentous operation – the DAY OF ALL DAYS, so to speak – the phrase D-Day became associated with it."

https://www.nytimes.com/1994/06/06/world/the-d-day-tour-code-names-where-d-day-and-h-hour-came-from.html

Did you hear it? Did he give the go code? Did you see his countenance after his speech?

No one escapes this.

Thank you God.

o7 Mr. President and Q Team. Forever grateful.