If you watch this alternate video - which I assume is from the same performance... they run out at after about 20-30 seconds. https://www.wbir.com/video/sports/college/vols/pride-band-member-collapses-during-halftime-performance/ I suppose if someone fainted in the middle of a football play it would take a bit to figure out what was going on and respond as well... Bands practice and work hard and are taught "the show must go on!" when someone trips or something unexpected happens... least they didn't leave foot prints on his back. I've watched many a basketball game where a player struggled in agony while the refs waited for the completion of a "play" to stop the game.