Sofía Vergara Awards Historic Golden Buzzer on 'America's Got Talent'

Hakuna Matata Acrobats advance to finals with death-defying performance in first live show of Season 19.

Vergara's Golden Buzzer marks the first time a judge can fast-track an act to the finals during live shows.
The Tanzanian acrobatic group impressed judges with a series of dangerous balancing tricks.
Simon Cowell praised the act as one of the most difficult and dangerous ever seen on the show.
Heidi Klum and Howie Mandel also lauded the performers for their skill and execution.
Three additional acts from the quarterfinals will advance based on viewer votes.