The United States Air Force's 40th Air Expeditionary Wing was an Air expeditionary unit located at Diego Garcia, in the Indian Ocean, from 2002 to c. 2006. The 40 AEW's mission was to support combat forces in Afghanistan and other combat areas supporting Operation Enduring Freedom. Operations began in October 2001.

China Burma India Theater (CBI) was the United States military designation during World War II for the China and Southeast Asian or India–Burma (IBT) theaters. Operational command of Allied forces in the CBI was officially the responsibility of the Supreme Commanders for South East Asia or China. In practice, U.S. forces were usually overseen by General Joseph Stilwell, the Deputy Allied Commander in China; the term "CBI" was significant in logistical, material and personnel matters; it was and is commonly used within the US for these theaters.