The Department of Defense policies and procedures implementing and supplementing the Federal Acquisition Regulation (FAR) are reproduced in this volume. The regulations and guidance apply to contracting with the Office of the Secretary of Defense, the Departments of the Army, Navy and Air Force, the Defense Logistics Agency, and other defense agencies.The July 2017 Department of Defense FAR Supplement (DFARS) includes the full text of the DFARS and DFARS Procedure Guidance Information (PGI), including all interim rules, final rules and Change Notices issued prior to July 1, 2017, along with a comprehensive index.The July 2017 Department of Defense FAR Supplement (DFARS) contains all of the Final Rule, Interim Rule and PGI changes made since January 1, 2017.