The term most commonly refers to a large, crewed, autonomous vessel. It is also sometimes used historically or colloquially to refer to remotely operated vehicles and robots, as well as medium-sized or smaller vessels, such as the midget submarine and the wet sub.
Alexandria is part of Virginia's 8th congressional district, represented by Democrat and Alexandria resident Don Beyer, elected in 2014. The state's senior member of the United States Senate is Democrat Mark Warner, elected in 2008.
Alexandria is an independent city in the Commonwealth of Virginia in the United States. As of the 2010 census, the population was 139,966,[3] and in 2016, the population was estimated to be 155,810.[4] Located along the western bank of the Potomac River, Alexandria is approximately 7 miles (11 km) south of downtown Washington, D.C.