Washington, D.C. Pentagon, large five-sided building in Arlington county, Virginia, near Washington, D.C., that serves as the headquarters of the U.S. Department of Defense, including all three military servicesâArmy, Navy, and Air Force.
Located in the J Star Cluster, the Quad Planetary System (the Quad) takes its name from the four inhabited bodies that comprise it: the dwarf planet Qresh and its three moons, Arkyn, Westerley, and Leith. These four worlds represent a politically, economically, and legally entwined planetary unit.
There are 102 counties in the state of Illinois. Most counties in Illinois were named after early American leaders, especially of the American Revolutionary War, as well as soldiers from the Battle of Tippecanoe and the War of 1812. Some are named after natural features or counties in other states. Some are named for early Illinois leaders.