We’ve all wondered about it, but have never actually seen what would happen if an entire fireworks display would ignite in the sky all at once.

Spectators at one of the largest 4th of July fireworks shows in the nation at San Diego’s Big Bay Boom  got to witness a wild show when a technical glitch set off thousands of fireworks from five barges all at once that lasted just 15 seconds.

While the scene was impressive and colorful, many who waited hours to see a show that was expected to last about 18 minutes were disappointed by the short display.

According to the L.A. Times, the company released a statement on bigbayboom.com saying, “The Garden State Fireworks team will be working throughout the night to determine what technical problem caused the entire show to be launched in about 15 seconds. We apologize for the brevity of the show and the technical difficulties.”

For those who’ve always wanted to see a fireworks show that was made up entirely of the Grand Finale, check out the video of the Big Bay bomb below: