Pyrotecnico and Freedom 250 have earned the Guinness World Records title for the largest fireworks

It is now official: Pyrotecnico and Freedom 250 have earned the Guinness World Records title for the largest fireworks display, with 840,537 fireworks illuminating Washington, D.C., in celebration of America’s 250th birthday.
The record measures the display's scale. What it cannot fully capture are the months of planning, precision, sacrifice and teamwork required to make such an undertaking possible.

This episode breaks down how D.C.'s record-setting fireworks display synced 840,537 launches to music with millisecond precision. From SMPTE timecode and e-matches to negative offsets and safety diagnostics, it explores the engineering behind a massive, perfectly timed sky show.