U.S. Code: Title 36 : Section 301National anthem(a) Designation. - The composition consisting of the words and music known as the Star-Spangled Banner is the national anthem.(b) Conduct During Playing. - During a rendition of the national anthem - (1) 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.http://caselaw.lp.findlaw.com/casecode/uscodes/36/subtitles/ i/parts/a/chapters/3/sections/section_301.html (more) (less)