Lyndon Johnson actually said...

"Keep your chin in and your chest out and do your duty as you see it."

"I have come to Korea to tell you that Americans, who fought side by side with you in your darkest hours, rejoice in your success, and take heart from your example."

"Here in Korea tonight, our fighting men stand with your own along the demilitarized zone, and we shall come once more to your defense if aggression--God forbid--should occur here again."

"We admire their bravery--and their self-esteem."