Rear Admiral Robert Girrier served as Deputy Commander Pacific Fleet and as Director of Operations for U.S. Pacific Command as well as commanding two carrier strike groups, a destroyer squadron, a destroyer, and a mine countermeasures ship. He holds master’s degrees in international affairs, marine affairs, and public administration and is the co-author of seven professional book editions, including Fleet Tactics and Naval Operations, the Watch Officer’s Guide and the Division Officer’s Guide as well as the previous edition of Command at Sea. Rear Admiral Girrier is President Emeritus of Pacific Forum International, an Indo-Pacific focused foreign policy think tank, and founder and managing member of Strategic Navigation, LLC, providing consulting services for strategy and policy.