KLAS is now fully available through Terrasync.
EDIT: Slight problem. The jetways will only load properly in FlightGear GIT, and you have to tell FG to load them. To do this, set the /sim/paths/use-custom-scenery-data property to true in FGRun. Command-line users, use the --prop:/sim/paths/use-custom-scenery-data=true switch.