This paper reports on a preliminary training development study (TDS) of the proposed training devices for the operator course of the Division Support Weapon System. Training device requirements for this system are being determined during the earliest stages of the Life Cycle System Management Model (LCSMM). The study overcame the lack of data needed for training device decision-making by building upon the comparability analysis techniques embodied in previous applications of the HARDMAN methodology to the Division Support Weapon System. The results of this study suggested that device-based courses would be substantially less costly than equipment-based courses.