AAR Corp. engages in the provision of products and services to commercial aviation and government and defense industries. The company is headquartered in Wood Dale, Illinois and currently employs 4,500 full-time employees. The Company’s segments include Aviation Services, which consists of aftermarket support and services offerings that provide spare parts and maintenance support for aircraft operated by its commercial and government/defense customers, and Expeditionary Services segment that consists of primarily manufacturing operations with sales derived from the design and manufacture of pallets, shelters and containers used to support the United States military’s requirements for a mobile and agile force, including engineering, design and system integration services for command-and-control systems. The company provides customized inventory supply chain management, customer fleet management and operations and aircraft component repair management services. The firm also offers eMRO, a Web-based enterprise software solution for managing aircraft maintenance and fleet management.