Why is it necessary for a commander to sign a DD Form 5987?

A commander must sign a DD Form 5987, which is the military's official document for the dispatch of a vehicle, primarily to provide authorization for the operator to take the vehicle off post. This signature indicates that the commander acknowledges and approves the use of the military vehicle for purposes outside of its immediate station, ensuring accountability and security when military assets are utilized beyond established boundaries.

The process also ensures that the vehicle's use is in alignment with the mission and that it complies with military regulations governing vehicle operations. This is crucial for maintaining control over military resources and ensuring the safety and readiness of equipment and personnel while on missions or duties that require travel outside of the respective installations.