Surety bonds are a form of protection that dates back to Babylonian times. Such bonds are a key piece of many public and private sector transactions. U.S. Customs, for example, requires importers to carry bonds to ensure compliance with rules and regulations. Courts require bail bonds to release criminal case defendants. Property or project owners require contractors to carry performance bonds. The Airline Reporting Corporation requires travel agents to meet certain requirements when carrying airline ticket stock, and an ARC Bond meets those requirements.