In 1992, Congress for the first time explicitly directed the federal agencies making SBIR grants to use commercial potential as a criterion for granting SBIR awards. In response, the Department of Defense developed the SBIR Fast Track initiative, which provides expedited decision-making for SBIR awards to companies that have commitments from outside vendors. To verify the effectiveness of this initiative, the Do D asked the STEP Board to assess the operation of Fast Track. This volume of original field research includes case studies comparing Fast Track and non-Fast Track firms, a large survey of SBIR awardees, and statistical analyses of the impact of regular SBIR and Fast Track awards. Collectively, the commissioned papers and the findings and recommendations represent a significant contribution to our understanding of the SBIR program.