All users (previous and new) must register for access to gated content.

You do not need to join our site to view its public content, however, much of our content requires registration using a Federal/DoD Public Key Infrastructure (PKI), Personal Identity Verification (PIV) or Common Access Card (CAC) client certificate.

Certificate Validation

Make sure your Federal/DoD PKI, PIV or CAC client certificate is correctly installed in your browser and click on the "Read Certificate" button.

After your certificate is validated, you will be directed to the site registration form.

Last Reviewed: 13 May 2015