If someone ADs at my funeral I'm going to be pretty upset.
Yes, those were blanks. They had to cycle the bolt carrier each time because there isn't enough pressure in the gas system to operate it without a bullet traveling down the barrel.
Why they chose such ridiculous positions to carry out a rifle salute is beyond me. I'll be upset about that at my funeral too. At least it was just a beret and not an ear or something.
I'd be pretty amused if an ear came off at my funeral, though...