“…Most theoretical models organize the effects of stress according to a stress-strainoutcomes model (e.g., Beehr, 1998;Koeske & Koeske, 1993) in which "environmental demands evoke an appraisal process in which perceived demand exceeds resources and results in undesirable physiological, psychological, behavioral, or social outcomes" (Salas et al, 1996, p. 6). Stressors appraised as threatening result in negative physiological, behavioral, and affective responses (e.g., Jex, 1998;Cooper, 1998), which in turn, influence many outcomes of interest to military personnel.…”