was originally envisioned (there have been calls for Dobbins ARB to become the second major commercial airport in metro Atlanta, to be a major reliever to Hartsfield–Jackson Atlanta International Airport, the busiest airport in the world). Dobbins ARB is the only U.S. military facility left in northern Georgia after the 2005 Base Realignment and Closure Commission (BRAC) recommendations were enacted. The Georgia Air National Guard transferred to Robins AFB in 1996, leaving Air Force Reserve C-130s as the only Air Force flying unit at the base. The 248th Medical Company (Air Ambulance) and elements of the 151st Aviation Regiment of the Army National Guard are also based there. More units relocated to Dobbins ARB as the Georgia Army National Guard took over NAS Atlanta as the latter closed due to BRAC and became a tenant non-flying command known as Navy Operational Support Center Atlanta. Dobbins is also the home of the U.S. Air Force Reserve's Transportation Proficiency Center which provides accelerated training for Airmen joining the Air Force Reserve in transportation career fields, specialized skill training, and pre-mobilization readiness training for Reserve component transportation Airmen called to active duty service. Near Dobbins ARB's main gate stands a Wichita-built B-29 named "Sweet Eloise" (B-29-80-BW, AAF Ser. No. 44-70113), which is on public display as a memorial to World War II bomber production plant at the site. However, at least two Marietta-built B-29s have survived the years. One is on display at the Georgia Veterans State Park near Cordele (B-29A-15-BN, AAF Ser. No. 42-93967) and the other (B-29B-55-BA, AAF Ser. No. 44-84053) is located at Robins Air Force Base's Museum of Flight in Warner Robins, Georgia. Major Commands to which assigned AAF Air Service Command, October 13, 1942 Commanding General, Army Air Forces, September 27, 1943 Second Air Force, January 14, 1944 AAF Materiel Command, July 15, 1944 AAF Materiel and Services, July 17, 1944 Redesignated: AAF Technical Service Command, August 31, 1944 Air Technical Service Command, July 1, 1945 Air Materiel Command, March 9, 1946 Air Defense Command, June 25, 1946 Continental Air Command, May 10, 1949 Air Force Reserve, August 1, 1968 Redesignated: Air Force Reserve Command, February 17, 1997–present Major Units assigned 522d Base HQ and Air Base Squadron, June 10, 1943 – March 25, 1944 292d Army Air Force Base Unit, March 25, 1944 – May 31, 1946 54th Fighter (later Troop Carrier) Wing, October 2, 1946 –