The following is the most recent version of the NIST 800-171a:
https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-171a.pdf
The following is the most recent version of the NIST 800-171a:
https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-171a.pdf
Yes that is the latest. DOD Contractors should be aware of this pending docket DARS-2018-0023 titled, “Guidance: Reviewing System Security Plans and NIST SP 800-171 Security Requirements Not Yet Implemented” reference: https://www.regulations.gov/document?D=DARS-2018-0023-0001