[TigersEye]

I think the incident you are referring to is in the following video. There are many more worth watching.

UNBELIEVABLE OBAMA GAFFES, Mistakes, Lies, and Confusion

After viewing that you will be thoroughly convinced that 0bama is not smart, not at all educated about the world and doesn't do any prep work or study at all.

[musicman]

"A Mind Strong Back Is A Terrible Thing To Waste"

[Scotswife]

Yeah...an appearance before veterans.
Opens up with a minute of “unexplained silence”

Someone tried to help out O by claiming he was waiting for a 21 gun salute to finish.
That is an odd claim...you can’t hear any shots. And even if the tv audience couldn’t hear shots - certainly the audience at the event would have been able to hear them - but some guy yells out AWKWARD!

It had to have been a teleprompter issue