An e-mail, from the Navy side of the stadium:

K-Lo:
I don’t know if you were watching the Army-Navy game or if they showed
the halftime show, but when the President changed sides from Army to
Navy at the half, a spontaneous chant of “Four more years” rose up from
the midshipmen. I can’t be sure but I think it spread around the entire
stadium. It was probably the biggest assemblage of supporters since, and
perhaps including, the convention. Maybe it was inappropriate given our
office, but it certainly felt good.