Onboard the US Navy (USN) Arleigh Burke Class (Flight IIA) Guided Missile Destroyer (Aegis), USS PORTER (DDG 78), a USN Sailors assigned to the ships Visit, Board, Search and Seizure (VBSS) Team, discusses tactics with two Bulgarian Navy Sailors, during bilateral training on the destroyer's aft missile deck. The PORTER is in port at Varna, Bulgaria, engaged in maneuvering, communication, air defense and Maritime Interdiction Operations (MIO) drills, to strengthen the emerging partnership between the two navies