Possible Clues:

• Bar on flight
• Survey reports by staff keeping tabs on those taking flight
• In-flight security device takes energy from asteroid drifting around back of Jupiter
• In-flight security?
• Flight security device said to reassure, regrettably starts malfunctioning
• It holds carpet in place at the bottom of a riser
• Restraint in flight 22 performed by staff
• A bar on flight
• Fixture between riser and treader