Bomb threats on passenger airliners are treated with a sense of urgency, often resulting in emergency landings, evacuations, and, eventually, disruption in services as well as travelers’ plans.

In a news release emailed to AirlineGeeks on Wednesday, the union stated that Allegiant Air is seeking regulatory ... A Viva Aerobus Airbus A320 (Photo: AirlineGeeks | William Derrickson) The ...