A map of the United States, with arrows pointing to where the Chinese surveillance balloon was spotted.
  • The United States on Saturday shot down a balloon officials said was a Chinese surveillance device.
  • The balloon had been spotted floating over the US and parts of Canada this week.
  • Below is a timeline of the balloon's journey over the country and what is known about the device.

The United States on Saturday shot down a balloon spotted floating over the nation and parts of Canada this week that officials said was a Chinese surveillance device.