This is an ATC.
These fireworks are actually NOT from the 4th of July, but from 8/16/14. They were originally scheduled for the Independence Day celebration at Crew Stadium that year, but a thunderstorm struck just before the game, seriously injuring a firefighter attending a charity event at the venue. Under the circumstances, the celebration was cancelled. The fireworks were used, instead, on 8/16 to celebrate US star Landon Donovan when he appeared at Crew Stadium with his LA Galaxy during his farewell season.