Many Department of Defense, US Navy, and other Federal Government websites use SSL to encrypt network traffic between web servers and browsers. This is similar to banks, brokerage houses, and e-commerce websites.
If you are having problems accessing our NROTC website (https://www.netc.navy.mil/NSTC/NROTC) or other similarly encrypted sites, the problem is most likely certificate errors such that the browser indicates that the website is untrustworthy and will not connect. To remedy that, the DoD Root Certificates need to be installed into Microsoft Internet Explorer.
Installing the DoD Root Certificates will allow your web browser to trust the identity of websites whose secure communications are authenticated by Department of Defense agencies. The DoD Root CA 2 certificate is included with the newer version of InstallRoot_5.5x32_NonAdmin.msi.