180731-N-TI567-068 VARNA, Bulgaria (July 31, 2018) Bulgarian naval defense force professionals practice tactical formations on the Black Sea near Varna, Bulgaria, with their newly-acquired seven-meter rigid hull inflatable boats. Approximately 15 personnel recently graduated from a Patrol Craft Officer - Coastal course mobile training team engagement sponsored by the Naval Small Craft Instruction and Technical Training School. (U.S. Navy photo by Angela Fry)