Property Insurance against perils which are ‘allied’ to Fire Insurance in that they all cause relatively infrequent losses, are rated similarly to Fire Insurance, and often are covered through one or more endorsements to a Fire Insurance Policy. One such endorsement, the extended coverage endorsement, provides protection against wind, hall, falling aircraft, riot and civil commotion, vehicles striking the insured property, explosion (except boiler explosion), and smoke. Other allied lines include earthquakes, sprinkler leakage and business interruption Insurance.