Aberdeen Test Center
Advanced Technology Center
Air Training Command
Air Traffic Controller
Armored Troop Carrier
Air Target Chart
Air Transport Command
Air Temperature Control
Air Threat Conference
Air Training Corps
air transportable clinic
Armament Training Camp
Army Training Center
Assurance Technology Corporation
Acquisition Tracking Center
Advanced Technology Components
Advanced Testing Capability
AEGIS Training Center
Agent Transfer Chamber
Aided Target Classification
Air Target Charts
Air Traffic Control's
Air Training Center
American Technology Corporation
American Truck Corporation
Amphibious Training Center
Analog Traffic Channel
Armored Troop Carriers
Armoured Troop Carrier
Army Tactical Center
Army Training Centers
Army Training Command
Assistant Trial Counsel
Association Travel Concepts
Asynchronous Transfer Mode Transfer Capability
Automatic Target Cueing
Automatic Target Cuing
Aviation Training Center
Mini-Armored Troop Carrier