(male narrator) a hush falling over the crowd. years of work poured into this moment right here. in order to achieve greatness, we must first believe in ourselves. (all) beat that wall! beat that wall! beat that wall! beat that wall! (narrator) and when boundaries are broken... (iseman) history has been made! (narrator) it inspires others to believe. (wetzel) kacy catanzaro really took this sport to another level for women. i feel incredibly inspired. i'm gonna be the first mom to hit that buzzer. (narrator) tonight mighty kacy returns...