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.
In Old Town Alexandria, building numbers are assigned north and south from King Street and west (only) from the Potomac River. In the areas formerly in the town of Potomac, such as Del Ray and St. Elmo, building numbers are assigned east and west from Commonwealth Avenue and north (only) from King Street.