Possible Clues:

• Source of marijuana in nick gets support
• Subject of airline etiquette discussion
• Support for limb motionless initially in seizure
• Plane seat part
• Spot frequently shared by flyers
• Comfortable chair feature
• Ready to explode? Nap in part of chair
• Support in a temporary ceasefire?
• Give weapons to others in support
• Theatergoers often share one