Information Analysis Center 
In any case 
Information Analysis Centers 
Industry Advisory Council 
Idle Air Control 
Instituto de Astrofisica de Canarias 
Immunization Action Coalition 
Industry Advisory Committee 
Instrument Approach Chart 
Intake Air Control 
Integrated Analysis Capability 
integrated avionics computer 
Intelligence Analysis Center 
Inter Application Communications 
Interapplication Communication 
International Association for Cybernet… 
Internet Application Component 
I Am Confused 
Impregnated Activated Carbon 
Independent Assurance Contractor 
Industrial Application Center 
Information Access Company 
Instantaneous Airborne Count 
Institute for Advanced Commerce 
Instrument Alignment Cube 
Integrated Assembly and Checkout 
Intelligence Advisory Committee 
interactive activation and competition 
Interactive Synchronous Communications 
Intergovernmental Advisory Committee