"Conduct during playing the national anthem when the flag is displayed:
(A) all present except those in uniform should stand at attention facing the flag with the right hand over the heart; (B) men not in uniform should remove their headdress with their right hand and hold the headdress at the left shoulder, the hand being over the heart; and (C) individuals in uniform should give the military salute at the first note of the anthem and maintain that position until the last note; and (2) when the flag is not displayed, all present should face toward the music and act in the same manner they would if the flag were displayed."
Even when watching tv from bed my quadriplegic best friend has me place his hand over his heart any time the anthem is played, and when in public he has somebody hold his hand up in place over his heart. He has no issue sternly instructing any able bodied folks within ear shot that dare be disrespectful, and they take heed...it's no fun being toe pinched with a 400 pound chair.