Naval Sea Systems Command in the context of "Washington, D.C. Navy Yard"

41°28′36″N 90°25′36″W / 41.476774°N 90.426539°W / 41.476774; -90.426539

The John Deere World Headquarters is a complex of four buildings located on 1,400 acres (570 ha) of land at One John Deere Place, Moline, Illinois, United States. The complex serves as corporate headquarters for agricultural heavy equipment company John Deere.

The United States Naval Surface Warfare Center Dahlgren Division (NSWCDD), named for Rear Admiral John A. Dahlgren, is located in King George County, Virginia, in close proximity to the largest fleet concentration area in the Navy. NSWCDD is part of the Naval Surface Warfare Centers under the Naval Sea Systems Command (NAVSEA). NSWCDD was initially established 16 October 1918 as a remote extension of Maryland's Indian Head Proving Ground used for testing naval guns. The Dahlgren site was named the Lower Station, Dahlgren Naval Proving Ground when it first opened. The location on the Potomac River was specifically chosen for the development of a long ballistic test range on the Potomac River, required for the testing of modern, high-powered munitions.

The NSWCDD employs approximately 4,700 scientists, engineers and support personnel at the Dahlgren organization and more than 350 at NSWCDD DNA. Prior to 2007, Panama City Coastal Systems Station located at the Naval Support Activity Panama City was part of Dahlgren Division, but in 2008, it became its own division within the NAVSEA Naval Surface Warfare Center structure.

The Washington Navy Yard (WNY) is a ceremonial and administrative center for the United States Navy, located in the federal national capital city of Washington, D.C. (federal District of Columbia). It is the oldest shore establishment / base of the U.S. Navy, established 1799, situated along the north shore of the Anacostia River (Eastern Branch of the Potomac River) in the adjacent Navy Yard neighborhood of Southeast, Washington, D.C.

Formerly operating as a shipyard since the end of the 18th century / beginning of the 19th century, and ordnance plant, the yard currently serves as home to the Chief of Naval Operations (CNO), commanding the U.S. Navy, and is headquarters for the several military agencies and commands of: Naval Sea Systems Command, Naval Reactors, Naval Facilities Engineering Systems Command, Naval History and Heritage Command, Navy Installations Command, the National Museum of the United States Navy, the U.S. Navy Judge Advocate General's Corps, Marine Corps Institute, the United States Navy Band, and other more classified facilities.

Naval Reactors (NR), which administers the Naval Nuclear Propulsion Program, is an umbrella term for the U.S. government office that has comprehensive responsibility for the safe and reliable operation of the United States Navy's nuclear reactors "from womb to tomb." The deputy administrator for Naval Reactors concurrently serves as director of the Naval Nuclear Propulsion Program, establishing a single entity who has authority and reporting responsibilities within both the Naval Sea Systems Command (NAVSEA 08), reporting to the chief of naval operations, and the National Nuclear Security Administration (NNSA NA-30), reporting to the NNSA administrator.

Naval Reactors is headed by a Navy four-star admiral. The director serves for a nominal eight-year term of office, the longest standard assignment in the U.S. military. The program was originally created under Executive Order 12344 by the President Ronald Reagan, on February 1, 1982. The director was concurrently assigned as the deputy administrator for Naval Reactors for the National Nuclear Security Administration via Pub. L. 98–525 (50 U.S.C. § 2406) on October 19, 1984 in order to assist them in the research, design, development, health, and safety matters pertaining to naval nuclear propulsion plants via 42 U.S.C. § 7158. Executive Order 12344 was made a permanent federal program via Pub. L. 106–65 (text) (PDF) of October 5, 1999 (50 U.S.C. § 2511).