Where are approved domestic delivery services for classified information specified?

The correct choice indicates that approved domestic delivery services for classified information are specified in the Transportation, Delivery, and Relocation Solutions (TDRS), Schedule 48. This schedule is part of the GSA’s procurement framework that outlines specific services and companies capable of handling sensitive materials securely within the United States.

The TDRS provides guidance and certification for transportation services that comply with the required security standards for classified information, ensuring that such materials are delivered securely and in accordance with federal regulations. This is crucial for maintaining the security of classified materials during transit, which is a key responsibility for Facility Security Officers.

The other options, while relevant to various aspects of government operations or guidelines regarding classified information, do not specifically focus on the approved domestic delivery services for classified materials like Schedule 48 does. Government Services Administration pertains to a range of services but not exclusively classified transport solutions. The Department of Defense guidelines refer more broadly to various security protocols and standards, while NISPOM policy documents provide a framework for overall security but may not lay out specific delivery services in detail as TDRS does.