Allegiant Air has a $4.99 fee for a Priority Security Line: (copied from my receipt) FIRST PRIORITY SCREENING Please present the confirmed itinerary page to the ticket agent upon check-in at the Las Vegas ticket counter for Priority Screening redemption. If the confirmed itinerary is not presented, the customer forfeits their access to the priority screening lane. Has anyone used this? Is this the line that can bypass the snake/weaving line by going to the far side of the security gate? Is this something they would include on a boarding pass? Even any information on how that security line works would be great!!!