Iraq's invasion of Kuwait in August 1990 caused much speculation that military Reserve units such as the 12th USAF Contingency Hospital would be called to active duty in the event of a war. Feelings and attitudes of personnel in the 12th Contingency Hospital were measured with a survey questionnaire in October 1990, 3 months prior to the mobilization date. The same questionnaire was administered in June 1991, about 2 months after the unit was demobilized. Indicators of increased tension,fear, and discouragement changed dramatically in the pre- and post-activation surveys. Some interesting rank group findings were noted. Results of the surveys point the way toward future studies to better understand what the specific emotional aspects of mobilizing a Reserve unit are and what can be done to ameliorate negative factors and to enhance constructive coping with problem areas.