an interview with Weekly Standard editor Bill Kristol
wrote about here
“He explained how difficult it had been for him to keep his composure. This was especially the case, he said, when he was congratulating and comforting Petty Officer Mansoor’s parents (this was evident on television). What wasn’t evident on the telecast was that when the president was reading his remarks and looked up at the audience, he saw the Navy SEALs assembled in the East Room, to a man, weeping. That’s when, the president said, he really had to steel himself to retain his composure. The president had a catch in his voice yesterday, 24 hours later, talking about the ceremony.
— Jon Ward, White House correspondent, The Washington Times