"This research effort applied principles of Naturalistic Decision Making to identify the cognitive challenges involved in platoon leader decision making in Military Operations in Urban Terrain (MOUT) building clearing missions. The findings informed the development of classroom, hardcopy, and multimedia training products to support Infantry Officer Basic Course students in MOUT decision making. A Cognitive Task Analysis of the building clearing task entailed a series of in-depth interviews with Army personnel experienced in MOUT. The analysis resulted in a detailed representation of eleven high-level decision requirements associated with the building-clearing task. Cognitive demands related to each requirement -- critical decisions and judgements, sensory cues, other factors, and expert strategies -- are included in the representation. Four products were developed based on the findings of the analysis: sixteen decision-centered training scenarios for MOUT environments; an interactive, multimedia tool (IMPACT) that supports instructors in training MOUT decision making skills; a classroom exercise that supports situation awareness appreciation and understanding; and a guide that provides supplemental information regarding the building clearing task from a platoon leader's perspective."--Stinet.