An Air Force systems-oriented electronics maintenance course for weapon control was developed and evaluated. A behavioral description based upon a task analysis of actual job requirements was first prepared. Based on objectives derived from these behavioral descriptions an experimental 14-week training course was developed. A group of subjects with electronics aptitude percentile scores ranging from 60 to 95 was trained by the experimental course. A control group of men with higher electronic aptitude scores was trained by a conventional course which included an introductory section on electronic principles. Data on all subjects was obtained including aptitude scores, reading ability scores, course grades, end-of-course performance testing, field followup performance testing, and supervisory appraisals on the basis of this data. The performance of experimental and control groups was compared. A list of references is appended. (Author/JY)