 Somewhere lurking in those waters hiding is a submarine and during the exercise the U.S. and Republic of Singapore navies work together using a variety of assets to find it. As a destroyer I usually don't get the opportunity to be the anti-submarine warfare commander and so this presents us an opportunity for us to grow tactically to take that next step, the next level of warfare. The different platforms play a game of cat and mouse, each trying to find the other first. The U.S. and Singapore navies take turns as the leadership actively searching for their counterpart submarine. They can hide easily, because they're quiet, we're I guess the first defense, I guess in a world-like scenario against enemy subs so if we don't go to our job, chances are we're not going to make it.