Christina Aguilera Screws Up The National Anthem At The Super Bowl [VIDEO]

Christina suffers a lyrical malfunction midway through her rendition of the National Anthem. About :51 sec in, as she was about to sing the fourth line ("o'er the ramparts we watched, were so gallantly streaming") she sang this line: "what so proudly, we watched, at the twilight's last streaming."  Here is the video.