Program Evaluation and Review Technique (PERT) is used in the U.S. Marine Corps task analysis program for occupational field studies. Scheduling sequential tasks, estimating time requirements, determining staffing needs, and locating checkpoints for control all can be accomplished using PERT. Examples of operational aspects of PERT, PERT schedules, time estimations, and management of occupational field studies are provided. This presentation will be of most use to new personnel for planning and control of occupational field studies, and to persons interested in task analysis as conducted by the Marine Corps. (CH)