William Stratton had just settled into his seat for a flight from Chicago to Phoenix, US, on the weekend. But this wasn't to be any ordinary trip.
Because shortly after the plane taxied away from the gate, a Frontier Airlines flight attendant approached his seat and handed him a note written on a serviette.
Bemused, he opened it up and found the seat numbers 10F and 13F written at the bottom along with words "other armed passengers".
It turns out the note wasn't meant for him, and the flight attendant had mistaken him for an air marshal. It's standard procedure for air marshals to be notified of other armed passengers on a flight.
Mr Stratton said the situation made him feel uncomfortable, and concerned, while a former air marshal told Fox 10 that had the note been given to someone who had bad intentions, it could have been a catastrophic mistake.