Students of coursework offered by The Contracting Education Academy at Georgia Tech know that the preferred means for searching the Federal Acquisition Regulation (FAR) — and agency supplements to the FAR — is the on-line search engine operated by Hill Air Force Base.
Unfortunately, that site — known as the FARSite — has been down for the last couple weeks due to an unintended consequence of security enhancements made to Air Force websites. Only military officials can access the site at the moment. Officials at Hill AFB are aware of the problem and are working to restore public access to the FARSite.
Until public access is restored, users can utilize an alternate FAR search engine available at acquisition.gov/far. Below is a screenshot of the alternate site with an explanation of some of its features.

We will alert you once access to the FARSite is restored. [Note: Public access to the Hill Air Force Base FARSite was restored on Feb. 3, 2017.]