What was meant to be AC/DC's signature concert finale nearly took a frightening turn during the band's recent performance in Las Vegas. Frontman Brian Johnson narrowly avoided injury after one of the group's iconic stage cannons malfunctioned just moments before the explosive finish of "For Those About to Rock (We Salute You)." Cannon Topples Just Feet from Brian JohnsonThe incident occurred during AC/DC's Aug. 1 concert at Allegiant Stadium in Las Vegas as the band prepared for its traditional closing number. AC/DC : For Those About To Rock : Allegiant Stadium Las Vegas 8/1/26The Show Went OnDespite the close call, Johnson didn't allow the mishap to derail the concert. AC/DC’s Stage Effect With a Long HistoryThe cannon salute has become one of AC/DC's most recognizable live traditions, accompanying performances of "For Those About to Rock (We Salute You)" for more than four decades.