I have been privileged to serve in the Pacific before. But now, from my vantage point as commander of U.S. Pacific Command (USPACOM), I have gained a fuller appreciation for the vibrancy, diversity, and complexity of the Asia-Pacific. You can sense the optimism among the regions 43 nations. I also see a region with security challenges, where the U.S. military continues to play an indispensable role in preserving stability. But ...