Sailors continue to benefit from the Navy Credentialing Opportunities On-line (COOL) program with the latest Navy COOL app update. The app matches the most recent information found on the Navy COOL website. Sailors will find updated links to advancement exam bibliographies in the app, and hospital corpsmen, in particular, will now find their bibliographies broken out by specialties. The update also includes a requirement to install Department of Defense trusted certificates, which allows users to access external DoD and Navy websites from the app. The Navy COOL App is available on the Navy App Locker website or through the new Navy App Locker app.