John Kennedy actually said...

"The purpose, of course, of all this concentrated effort must be to maintain the peace."

"It is clear that we must move forward on all approaches that will contribute to achieving our goal."

"You will, I know, continue your efforts to improve the operation of the program in this respect."

"I'm confident with your support, which you have demonstrated on many battlefields and many different parts of the world, that with your support we can meet the challenges that lie ahead."