South Korea showcased a ballistic missile capable of carrying an eight-ton warhead and featured a flypast of a U.S. bomber at military parades in Seoul on Tuesday, a show of force now held annually to signal readiness to respond to North Korean threats.

SEOUL, South Korea — South Korea unveiled its most powerful ballistic missile and other weapons targeting North Korea during a massive Armed Forces Day ceremony Tuesday, as the president warned the North’s regime would collapse if it attempts to use nuclear weapons.

Eager citizens waved flags and aged veterans stood at attention as armor rumbled through central Seoul’s concrete canyons, while a line of Apache attack helicopters whirled overhead and formations of fighter jets thundered through the clouds.