What tool do planners use to create and modify a TPFDD file and build a force list?

The Joint Operations Planning and Execution System (JOPES) Edit Tool (JET) is the correct answer because it is specifically designed to create and modify Time-Phased Force and Deployment Data (TPFDD) files. JET enables planners to input, update, and manage the detailed requirements for forces and resources needed for a deployment or operation. By using JET, planners can effectively build a force list that outlines the personnel and equipment necessary to execute military operations.

This tool enhances the planning process by allowing for real-time updates and modifications to the TPFDD, ensuring that planners have the most accurate and up-to-date information as they prepare for deployments. The use of JET is critical for effective logistics planning, as it integrates seamlessly with other components of the JOPES framework to support comprehensive operational planning and execution.