When intubation is anticipated to be challenging, the Bougie is a straight, semi-rigid stylette-like device with a bent tip that can be used. It is frequently beneficial when the tracheal opening is anterior to the visual field. The bougie is gradually inserted during laryngoscopy into the larynx and via the cords until the tip enters a mainstem broncus. An helper inserts an ETT via the bougie and into the larynx while keeping the laryngoscope and Bougie in place. The bougie is taken off after the ETT has been installed.