Michele Amabile Angermiller The “America’s Got Talent” semifinals kicked off with a bang on Wednesday night (Sept. 16) as South Korean group BTS delivered a colorful and energetic performance of the hit song “Dynamite” on the NBC show.The band members — comprised of Jungkook, RM, V, Jimin, J-Hope, Suga and Jin — looked dapper in ’70s-inspired get-ups while meticulously hitting their marks as they danced against the backdrop of a gas station, a movie theater and a restaurant.