The Fourth of July has been celebrated across the nation since 1776. But when — and how — did Americans across the country agree to commemorate the holiday with a fireworks celebration?

The Chargers running back suffered a superficial eye injury at an Independence Day celebration “mishap,” Harris’ agent Doug Hendrickson told NFL Network insider Ian Rapoport. Several other attendees were also injured in the incident. Harris is still “fully expected” to be ready for the upcoming NFL season, according to Rapoport.

The nature and severity of Harris’ injury could not immediately be verified. Officials in Antioch say other people had been hurt in the blast, but did not specify their number or how severely any