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.
For most prospective residents, the real story of the D.C. area is the array of residential and commercial corridors surrounding the city on all sides. Just south across the Potomac in Virginia lies Fairfax County, a built-up area including the satellite city of Arlington and the larger suburbs of Alexandria, McLean, and the more upscale Fairfax.