A U.S. Marine with Black Sea Rotational Force 17.1 prepares for an amphibious landing in Nikolaev, Ukraine, during exercise Sea Breeze 2017, July 18. Sea Breeze is a U.S. and Ukraine co-hosted multinational maritime exercise held in the Black Sea and is designed to enhance interoperability of participating nations and strengthen maritime security within the region. (U.S. Marine Corps photo by Cpl. Sean J. Berry/Released)