A 21-year-old Chinese national studying aeronautical engineering at University of Glasgow in Scotland has been taken into custody by the Federal Bureau of Investigation (FBI) following his arrest at John F. Kennedy International Airport, where he was preparing to board a return flight to Europe.

The individual, identified as Tianrui Liang, had reportedly traveled across parts of the United States with the intention of observing and photographing military aircraft at several U.S. Air Force installations.

Authorities allege that Liang visited Offutt Air Force Base, where he attempted to capture images of sensitive aircraft, including the E-4B Nightwatch and various RC-135 reconnaissance platforms. Prior to that, he is also believed to have visited Ellsworth Air Force Base, known for hosting B-1B Lancer bombers.

Investigators state that Liang relied on publicly available planespotting resources and online guides to identify vantage points near military bases that are commonly used by aviation enthusiasts for observation and photography. While such platforms are typically intended to help hobbyists remain within legal and safe viewing areas, authorities have not confirmed whether Liang adhered to those guidelines during his visits.

According to officials, Liang initially traveled to Vancouver, Canada, where he met with a friend attending university in New York. The two then embarked on a road trip into the United States, traveling through Seattle and into Montana. The companion later returned to New York by air, while Liang continued traveling independently.

Liang was arrested upon arriving at JFK Airport as he prepared to depart for Glasgow via Frankfurt. He has been charged under Title 18, U.S. Code, Section 795, which prohibits the unauthorized photographing or documentation of designated military and naval installations without prior approval from commanding authorities.

While such statutes exist in the United States and other countries, they are infrequently enforced against aviation enthusiasts. In many cases, hobbyists are viewed as an informal layer of vigilance, often reporting suspicious activity to authorities. Some military installations even maintain structured engagement programs with regular observers to enhance situational awareness.

However, officials suggest that several factors may have contributed to heightened scrutiny in this case. Offutt Air Force Base is not only home to rare and strategically significant aircraft but also serves as headquarters for United States Strategic Command, making it a highly sensitive installation.

Additionally, authorities noted broader national security considerations, including increased vigilance surrounding foreign nationals accessing or documenting military infrastructure. Investigators are also examining whether Liang may have positioned himself in areas not typically used or recommended by established planespotting communities, which may have drawn attention. A witness reportedly observed him photographing aircraft in proximity to operational areas, including near a runway.

Liang appeared in court on April 8, where he was initially granted release on bail after surrendering his passport. However, a subsequent court order issued on April 9 resulted in his re-arrest, with the court determining that he posed a potential flight risk. He remains in custody pending further legal proceedings.

The case has drawn attention within the global aviation enthusiast community, particularly amid reports of increased scrutiny of foreign planespotters visiting the United States. Some international travelers, including those from allied countries such as the United Kingdom and the Netherlands, have reported being questioned by authorities or having their travel privileges under the Electronic System for Travel Authorization (ESTA) reviewed or revoked following such activities.

While national security concerns remain paramount, some observers note that maintaining constructive relationships with the aviation enthusiast community has historically contributed to situational awareness and reporting of unusual activity. Authorities have not commented further on how this balance may evolve moving forward.

The investigation remains ongoing.