Book excerpt: This book provides background and analyses on the Civil Reserve Air Fleet (CRAF) which was created by executive order in 1951. As a result, the Departments of Commerce (DOC) and Defense (DOD) formulated a contingency plan to meet the nation's airlift needs in times of crisis. When the Department of Transportation (DOT) was created, it assumed DOC's role in the CRAF program, and today, DOD and DOT work together to manage the CRAF program. The CRAF supports DOD airlift requirements in emergencies when the need for airlift exceeds the capability of the military aircraft fleet. All CRAF participants must be U.S. carriers fully certified by the Federal Aviation Administration, and meet the stringent standards of Federal Aviation Regulations pertaining to commercial airlines. The CRAF has three main segments: international, national, and aeromedical evacuation. The international segment is further divided into the long-range and short-range sections and the national segment into the domestic and Alaskan sections. Assignment of aircraft to a segment depends on the nature of the requirement and the performance characteristics needed.