A United Airlines flight from Newark, New Jersey, to Palma de Mallorca, Spain, made an unexpected return to Newark on Saturday due to a potential security threat related to a Bluetooth device. After 4 hours and 24 minutes in the air, the flight crew decided to turn back to address the situation. Passengers reported that they were instructed to turn off their Bluetooth devices, and social media posts indicated that the device in question was named 'BOMB.' An air traffic control recording confirmed that the security detail was prompted by this name, leading to the need for a thorough inspection of the aircraft. The flight eventually reboarded and landed in Palma de Mallorca at 3:47 p.m. local time on Sunday, arriving approximately 9.5 hours late. Despite the initial panic, the situation turned out to be related to a teenager's Bluetooth speaker, causing a mix of frustration and humor among passengers.