 ATOL-licensed firms will have had their business practices inspected by the CAA.An ATOL licensed tour operator must also obtain insurance bonds from the CAA.The aim of this is to provide refunds to travellers affected by any event which causes the airline to be unable to provide travel for its customers, and to arrange for flights (in addition to accommodation and other items which may be included in a package holiday) to return home those already abroad at the time.