Aon Corporation is one of the leading providers of risk management services in the United States. It offers a range of insurance and reinsurance brokerage and human capital and management consultation solutions. The corporation maintains a staff of more than 35,500 employees. Aon Corporation operates over 500 offices in nearly 120 countries. It serves several clients in the automotive, construction, entertainment, marine, financial, health care, trucking, pharmaceutical, and aerospace and aviation industry. The corporation operates Aon Benfield, which provides financial advisory and claims management services. Aon Corporation also maintains Aon Consulting and Aon Risk Services. The corporation has annual sales revenue of approximately $7.5 billion.