Call for Fire (CFF) is a highly complex and dynamic task to train. Existing CFF training systems offer immersive training experiences, yet high set-up and implementation costs and limited system portability inhibit fulfillment of throughput requirements. Augmented Virtuality (AV) may be a viable solution to reduce costs associated with CFF Simulation-Based Training, improve system portability, increase throughput, and enhance the immersive experience. AV involves the blending of live and virtual training elements to create a highly immersive experience with greater task fidelity. This experiment represents an initial metrics and experimental protocol assessment in a series of training effectiveness evaluation experiments investigating the performance and learner perception tradeoffs of AV technologies applied to the CFF task domain. Results reveal trends toward increased learner self-efficacy, positive perceptions of system fidelity and usability, and high ratings for immersion, engagement, and presence. These findings confirm the validity of the selected performance metrics and subjective measures for the assessment of AV technologies for CFF training and also inform the empirical recommendations to improve the quality of follow-on training effectiveness evaluations.