Fewer first responders will be available for the usual spike in firework incidents and ER visits during July 4th weekend — one of America's most dangerous holidays

7:59am PDT - July 4th, 2020    4th of july 2020 - Business Insider

• On average, more Americans visit the emergency room on July 4 and 5 than any other day during the year, making it "by one measure, the most dangerous day of the year," according to the Pew Research Center.
• First responders are already stretc…