Through 17 Super Bowl Halftime Shows, six Emmy Award shows, four Oscar nights, three Grammys, the first-ever FIFA World Cup Halftime Show and an Olympic opening ceremony, Hamish Hamilton has seen it all. Still, never in his career has the prolific live-event director been more worried about a technical failure than when he helmed the now-Emmy-nominated Bad Bunny Super Bowl Halftime Show in February, when they were shooting on prime cinema camera lenses, not particularly designed for a live show, and they had no backups. “Even with the World Cup, we always had a backup,” he says. “But with Bad Bunny [aka Benito Antonio Martínez Ocasio],…