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The Federal Acquisition Regulations System is established for the codification and publication of uniform policies and procedures for acquisition by all executive agencies.
NIST SP 800-161 from 48 C.F.R.
NISTIR 7622 under Federal Acquisition Regulation from 48 C.F.R.
False Accept Rate (defined over an authentication transaction)
NIST SP 800-76-2 under FAR