1. Fireworks light up Fourth of July sky

2. People watch the Macy's Fourth of July fireworks in New York City. REUTERS/Jeenah Moon

3. A general view of U.S. national flags and fireworks during the annual Independence Day fireworks celebration on the National Mall in Washington.  REUTERS/Joshua Roberts

4. People watch the Macy's Fourth of July fireworks in New York City. REUTERS/Jeenah Moon

5. People watch the Macy's Fourth of July fireworks in New York City. REUTERS/Jeenah Moon

6. People watch the annual Independence Day fireworks celebration on the National Mall in Washington.  REUTERS/Joshua Roberts

7. People watch the Macy's Fourth of July fireworks in New York City. REUTERS/Jeenah Moon

8. People watch the Macy's Fourth of July fireworks in New York City. REUTERS/Jeenah Moon

9. People watch the Macy's Fourth of July fireworks in New York City. REUTERS/Jeenah Moon

10. People watch the annual Independence Day fireworks celebration on the National Mall in Washington.  REUTERS/Joshua Roberts

11. People watch the Macy's Fourth of July fireworks in New York City. REUTERS/Jeenah Moon

12. People watch the annual Independence Day fireworks celebration on the National Mall in Washington.  REUTERS/Joshua Roberts

13. People watch the Macy's Fourth of July fireworks in New York City. REUTERS/Jeenah Moon

14. People watch the annual Independence Day fireworks celebration on the National Mall in Washington.  REUTERS/Joshua Roberts