The 374th Airlift Wing includes four groups: operations, mission support, maintenance and medical. Each group manages a various number of squadrons in order to carry out the wing's mission.
Yokota Air Base is also home to U.S. Forces Japan, a joint service headquarters coordinating matters affecting U.S. and Japanese defense relations, and Fifth Air Force, whose mission is to enhance the U.S. deterrent posture and, if necessary, provide tactical fighter and military airlift support for offensive air operations.
374th Airlift Wing
The 374th Airlift Wing is responsible to the commander of 5th Air Force for C-130, C-12 and UH-1 operations including tactical airland and airdrop, as well as aeromedical and distinguished visitor airlift. View the wing fact sheet including a list of support agencies.
374th Mission Support Group
The 374th Mission Support Group is responsible to the 374th Airlift Wing commander for command, control and direction of support activities to 374th Airlift Wing and 32 tenant units to include Headquarters U.S. Forces Japan and 5th Air Force. View the unit fact sheet including a list of subordinate units.
374th Medical Group
The 374th Medical Group ensures medical readiness of 374th Airlift Wing, 5th Air Force and U.S. Forces Japan personnel. They also maintain 64 war reserve material projects, including the U.S. Air Force's largest Patient Movement Item inventory. View the unit webpage.
374th Maintenance Group
The 374th Maintenance Group maintains C-130H, C-12J and UH-1N aircraft supporting intratheater airlift and distinguished visitor transport for Pacific Air Forces. View the unit fact sheet including a list of subordinate units.
374th Operations Group
The 374th Operations Group maintains a forward presence by providing rapid responsive movement of personnel, equipment and operational support in the Asia-Pacific region. View the unit fact sheet including a list of subordinate units.
374th Airlift Wing 
The 374th Airlift Wing is responsible to the commander of 5th Air Force for C-130, C-12 and UH-1 operations including tactical airland and airdrop, as well as aeromedical and distinguished visitor airlift. 
The 374th Mission Support Group is responsible to the 374th Airlift Wing commander for command, control and direction of support activities to 374th Airlift Wing and 32 tenant units to include Headquarters U.S. Forces Japan and 5th Air Force. 
The 374th Medical Group ensures medical readiness of 374th Airlift Wing, 5th Air Force and U.S. Forces Japan personnel. They also maintain 64 war reserve material projects, including the U.S. Air Force's largest Patient Movement Item inventory. 
The 374th Maintenance Group maintains C-130H, C-12J and UH-1N aircraft supporting intratheater airlift and distinguished visitor transport for Pacific Air Forces. 
The 374th Operations Group maintains a forward presence by providing rapid responsive movement of personnel, equipment and operational support in the Asia-Pacific region. 