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Story summary
- The Independence Day display set a Guinness World Record by launching 850,000 fireworks across ten sites in 40 minutes.
- Heat and wildfire risk forced cancellations of parades and fireworks in several areas, prompting Washington, D.C. to issue a Code Red Air Quality Alert for hazardous smoke.
- Experts urged residents to wear N95 masks because the fireworks released particles and metal salts that can aggravate asthma and heart disease.
