A flight in the US was forced to turn around before take-off when a woman removed her clothes and began screaming.
The Frontier Airlines flight was about to fly from Denver to Portland, Oregon, when the passenger became agitated as the plane taxied.
Another passenger on the flight, identified only by his first name Devin, recorded video of the incident and posted it on YouTube.
The footage shows the woman kicking and screaming on the ground, while banging on the cockpit door. She then said, "You don't even realise we're about to die. This thing is going down".
Devin told Fox News Denver the woman's behaviour had been erratic inside the airport and that she had then tried to pry open an overhead panel and get out an oxygen mask as the plane taxied.