Related Clues:

• Spreadsheet features
• Societal levels
• Lines of seats
• Levels of society
• Captain, general, etc.
• To-dos
• Geological layers
• Admiral and others
• Colonel, corporal, etc.
• Layers in beds
• Grandstand divisions
• Carpentry devices
• Razes
• They're often closed in an emergency
• Admiral and general, for example