Joint Base Myer–Henderson Hall

Joint Base Myer–Henderson Hall is a Joint Base of the United States military that is located around Arlington, Virginia which is made up of Fort Myer(Arl), Fort McNair(SW DC), and Henderson Hall. It is the local residue of the Base Realignment and Closure, 2005 process. It is commanded by the United States Army but has resident commands of Army, Navy, & Marines. Most conspicuous is the Arlington National Cemetery Honor Guard. The 2 eponymous bases are co-located along the west boundary of the cemetery, and Fort McNair is across the Potomac R, in Washington,DC, on the Anacostia River.

Operations
Fort Myer is headquarters to service personnel working throughout the National Capital Region. The post provides housing, support, and services to thousands of active-duty, reserve, and retired military, members of the U.S. Coast Guard, and their families stationed in the United States Army Military District of Washington. The JBMHH’s mission is to operate the Army’s community and support Homeland Security in the nation’s capital.

Stationed here are: The First and Fourth battalions of the 3rd U.S. Infantry Regiment, (The Old Guard) — and since August 2011, 'A' Company (Commander in Chief's Guard), which was stationed at Fort McNair, D.C; The U.S. Army Band “Pershing's Own”; the grave site of Black Jack, the riderless horse in the state funerals of General of the Army Douglas MacArthur and U.S. Presidents John F. Kennedy, Herbert Hoover, and Lyndon B. Johnson, is located on Summerall Field, 200 ft northeast of the parade ground's flagpole.

Due to its proximity to Arlington National Cemetery, this is also the base of operations for most Services' Honor Guards and burial teams. A large percentage of burials in Arlington National Cemetery originate from Old Post Chapel, one of the two chapels on Fort Myer. Visitors are also given access to the caissons, stables and the Old Guard Museum. Black Jack, the riderless horse that rode in the funeral procession for John F. Kennedy, Dwight D. Eisenhower, and others, is buried on the grounds near the stables.

The military's largest child development center, named the Cody Child Development Center (CDC), is located here.