Arlington County, Virginia area. The county is situated in Northern Virginia on the southwestern bank of the Potomac River directly across from Washington, D.C., of which it was once a part. With a land area of , Arlington is the geographically smallest self-governing county in the U.S., and by reason of state law regarding population density, has no incorporated towns within its borders. Due to the county's proximity to downtown Washington, D.C., Arlington is home to many important installations for the capital region and U.S. government, including the Pentagon, Reagan National Airport, and Arlington National Cemetery. Many schools and universities have campuses in
Chief Management Officer of the Department of Defense Chief Management Officer of the Department of Defense The Chief Management Officer (CMO) of the United States Department of Defense (DoD) is the third-in-command of the department after the Secretary of Defense and Deputy Secretary of Defense. The position's purpose is to reduce costs by improving the quality and productivity of DoD's business operations. The CMO's office contains six "reform leaders" in the areas of logistics and supply chains, real property, community services, human resources, and health care, and a Program Executive Officer for IT Business Systems. The office also oversees Washington Headquarters Services and Pentagon Force Protection Agency, and