Abstract : The U.S. Army's Tank-automotive and Armaments Command (TACOM) Research Development and Engineering Center (TARDEC) Vetronics Technology Area is responsible for technology applications that support reduced crew operations in ground combat vehicles. The current program meeting this challenge is the manned Crew Integration and Automation Test Bed (CAT) Advanced Technology Demonstration (ATD). The CAT is the culmination of past Science and Technology Objectives (STO) that include the Vetronics Technology Test bed (i.e., the intra vehicle electronics suite STO), future scout virtual prototype ACT II effort and Crewman's Associate Advanced Technology Demonstration.