150903-N-FQ994-067 ODESA, Ukraine (Sept. 3, 2015) Ukrainian Navy diver Sergey Tukmachov, left, and Vladimir Voropaev, right, perform maintenance on a Kirby Morgan 37 dive helmet during the Sea Breeze 2015 diving component. Sea Breeze is an air, land and maritime exercise designed to improve maritime safety, security and stability in the Black Sea. (U.S. Navy photo by Mass Communication Specialist 3rd Class Robert S. Price/Released)