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N PR 1600 2 Need help?
Subject: NASA Classified National Security Information (CNSI) w/Change 3 (8/31/2016)
Responsible Office Code: LP2
Effective Date: October 11, 2011
Expiration Date: September 11, 2019
Cancellation Date: April 30, 2024 
Document Cancelling this Directive (if Cancelled): N PR 1600 2A
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Documents Cancelled by this Directive: