Information Security Oversight Office (ISOO)

Guidance for Transmission Methods of Classified Information within and between the U.S., Puerto Rico, or a U.S. Possession or Territory

Frequently Asked Question

Please Contact ISOO if you have more questions concerning methods to transmit classified information within and between the U.S., Puerto Rico, or a U.S. possession or territory.


  1. Can Secret and Confidential information be transmitted by an overnight delivery service within the U.S. and its Territories?

    Yes. Agency heads may, when a requirement exists for overnight delivery within the U.S. and its Territories, authorize the use of the current holder of the General Services Administration contract for overnight delivery of information for the Executive Branch [Ref. Section 2001.46 (c)(2) of 32 C.F.R. Part 2001]. View the current contractors

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Information Security Oversight Office (ISOO) >

The U.S. National Archives and Records Administration
1-86-NARA-NARA or 1-866-272-6272

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