Fig. 3. The GlideScope® Videolaryngoscope blade is at location 2 (vallecular position). ( A ) The laryngoscope was gently lifted, providing adequate room for endotracheal tube (ETT) insertion and advancement. Camera axis and the laryngotracheal axis are aligned. ( B ) The laryngoscope was levered, resulting in extreme reduction of the oropharyngeal space and immediate glottic space for ETT insertion and advancement. There is a severe misalignment of the camera axis and the tracheal axes. Advancement of the disengaged ETT into the trachea is difficult because of an unfavorable angle of impact of the ETT tip and the anterior tracheal wall. Twisting the styletless ETT in a corkscrew manner is used to advance the ETT into the trachea.