A United Airlines flight from Newark to Spain was diverted back to Newark after a passenger's Bluetooth speaker was named 'BOMB,' triggering security protocols. - The flight turned around after 4 hours and 24 minutes in the air.
- Passengers were asked to turn off Bluetooth devices, and the aircraft was inspected. - The device was reportedly a teenager's speaker, and the flight eventually landed in Spain 9.5 hours late.
- The incident highlights the seriousness of security threats on aircraft.