The Navy Credentialing Opportunities Online (COOL) app for mobile devices recently received a significant upgrade with the addition of advancement exam bibliographies (BIBs). BIBs on COOL allows Sailors, including the Reserve forces, who are preparing for advancement examinations to access their references without the need for a Common Access Card (CAC). Also, many of the documents in the app have been compressed, making downloading it easier. To find the free Navy COOL app, search "Navy COOL" in app stores or in your web browser. To update the existing Navy COOL app on your mobile device (if you haven't received a notification), check the page in the device store and there will be an upgrade option — choose 'upgrade' and download.