Final answer:
The TPFDD development process indeed begins with the supporting command, which identifies the requirements for a military operation.
Step-by-step explanation:
The statement 'The TPFDD development process begins with the supporting command' is True. TPFDD, which stands for Time-Phased Force and Deployment Data, is an essential component in military logistics planning, specifically for deployment and redeployment operations. The development process of a TPFDD typically starts with the supporting command, which is responsible for identifying all the requirements and assets needed for a particular operation. This includes determining the force structure, sustainment needed, and the movement of troops and equipment.