The FBI agent heading the probe into Zhou described their own experience, noting, "I am familiar with tradecraft and techniques utilized by foreign adversarial nations and the efforts those nations undertake to collect intelligence on elements of military infrastructure of their interest."

(39-year-old Yinpiao Zhou of China was arrested last week)

https://www.foxnews.com/us/us-investigating-whether-chinese-citizen-charged-flying-drone-over-base-committed-more-serious-offenses