In this section, “emergency management and civil defense” and “emergency” have the meanings stated in the State Emergency Management and Civil Defense Act. No action for damages may be brought against a person, firm, or corporation who allows premises which he owns, controls, or occupies to be used, free of charge, for one of the following purposes: Sheltering persons during an attack or raid by an enemy; Stocking of food, water, medical supplies, equipment, or other materials to be used in the event of an attack upon the United States; or Sheltering persons during an emergency. This section applies only to injuries to person or property incurred on or adjacent to the premises: During an actual or practice attack or raid; While supplies and materials are being moved or stored; During an emergency; or During inspections or visits connected with emergency management and civil defense.