Editor's Note: China’s use of spy balloons over the U.S. has recently made global headlines, but few realize that the U.S. is developing stealthy surveillance and intelligence-gathering balloons of its own. Below, we review the history of spy balloons, from their first use in WWII to their current technological capabilities and development in the U.S. This article was originally published on November 11, 2021.
A timely reminder there is no "only they do it" here and quite possibly they do it less, and second.