Thirty-seven people were hurt in Charles City, Iowa during the Fourth of July fireworks display. A shell misfired, sending a fireball into a crowd of people.

• 在爱荷华州的查理市，有37人在美国国庆日的烟花表演中受伤。原因是一个未被点燃的烟火落在了拥挤的人群中。