Add the picture of Obama at the Memorial Day ceremonies in Arlington Cemetery last May to your set. There is one with Zer0 once again using the crotch salute while others either salute or hold their hands over their hearts. The teleprompters are also clearly visible, adding just the right touch. /s
Later I received a contact from another Freeper that shed doubt on it and did some research and found a video of the event.
Those saluting and putting their hands over their hearts were doing so saluting the President as he came out on stage and stood there awaiting to speak. Obama, since he was the one being saluted, of course did not salute.