A security misunderstanding occurred at Ontario International Airport in California on Sunday evening. A passenger discussing the online game Call of Duty used words such as "bomb" and "explosion," which were misheard by other passengers as a real threat. The involved flight and the east wing of Terminal 2 were subsequently evacuated.
The Ontario Police Department stated that the Frontier Airlines flight was waiting for takeoff at the time of the incident. After passengers who heard sensitive terms reported them to the crew, airport authorities evacuated the aircraft and the relevant terminal area, and temporarily detained the individual who made the remarks.
Police later learned that the passenger was communicating with friends via FaceTime while playing Call of Duty. The language in question stemmed from a discussion about the multiplayer content of this military-themed first-person shooter game and did not constitute a real threat to the flight or the airport.
After law enforcement officers inspected the aircraft and cabin, no explosives or weapons were found. The detained passenger was not charged and was released before reboarding with the other passengers. The flight eventually departed, and no further incidents occurred.

