In the world of espionage, the U-2 spy plane has long been a powerful tool for gathering intelligence from high altitudes. But in recent years, this iconic aircraft has also become the subject of some unlikely social media fame. In 2016, a U-2 pilot caused a stir when he posted a selfie taken from the cockpit of his plane. The photo not only showcased the impressive view from the aircraft’s altitude but also revealed a surprising detail: a Chinese spy balloon trailing the plane. The U-2 spy plane has been in use since the 1950s and is known for its ability to fly at extremely high altitudes, up to 70,000…