Question: Naval Officer Training Command Newport is a unit of Naval Education and Training Command which was once the homeport for what?
Context: Training Command was the RAF's command responsible for flying and ground training from 1936 to 1940 and again from 1968 to 1977.  Training Command was formed from Inland Area on 1 May 1936 and absorbed into RAF Support Command on 13 June 1977.  From 27 May 1940 to 1 June 1968, Training Command did not exist as its functions were split into Flying Training Command and Technical Training Command. The Naval Nuclear Power Training Command (NNPTC) is the parent organization within the United States Navy's Naval Education and Training Command that is responsible for educating enlisted and commissioned personnel of the US nuclear naval program.  NNPTC's mission is to train officer and enlisted students in science and engineering fundamental to the design, operation, and maintenance of naval nuclear propulsion plants.  NNPTC houses Nuclear Field "A" School and Naval Nuclear Power School.  These two schools were formerly independent entities run by separate commanding officers and structures.  NNPTC was created in 1993 to streamline the command structures of both schools, with each school ultimately reporting to a single commanding officer of NNPTC. CNRSE's motto is "Where the Atlantic Fleet and the Navy's Air Training Command come to train", It gets this motto from the fact that its installations are home to both the Naval Air Training Command located at Naval Air Station Corpus Christi and Naval Education and Training Command, which has its headquarters at Naval Air Station Pensacola.  The region's installations also host the United States Navy Flight Exhibition Team, more commonly known as the Blue Angels, which for a brief stint in the late 1940s were under what was then the NAval Air Advanced Training Command. Army Air Forces Training Command (AAFTC) Is the lineal predecessor to today's Air Education and Training Command (AETC), which celebrated its 75th anniversary 23 January 2017.  It began as Air Corps Flying Training Command on 23 January 1942, was redesignated Army Air Forces Flying Training Command 15 March 1942, and merged with Army Air Forces Technical Training Command to become Army Air Forces Training Command on 31 July 1943.  Continuing service after the war, it was redesignated Air Training Command on 1 July 1946.  During the consolidation of Air Force Major Commands in the retrenchment of the 1990s, Air Training Command assumed control of Air University and became Air Education and Training Command on 1 July 1993--see the Lineage and honors statement for AETC: http://www.afhra.af.mil/About-Us/Fact-Sheets/Display/Article/433550/air-education-and-training-command-usaf/ . The Naval Station Newport (NAVSTA Newport) is a United States Navy base located in the city of Newport and the town of Middletown, Rhode Island.  Naval Station Newport is home to the Naval War College and the Naval Justice School.  It once was the homeport for Cruiser Destroyer Force Atlantic (COMCRUDESLANT), which relocated to Naval Station Norfolk in the early 1970s.  Newport now maintains inactive ships at its pier facilities, along with the United States Coast Guard.  In BRAC 2005 (Base Realignment and Closure), NAVSTA Newport gained over five hundred billets, in addition to receiving, again, the Officer Candidate School (OCS), the Naval Supply Corps School (in 2011), and several other activities, to include a few Army Reserve units. The Officer Training School is a Republic of Korea Air Force commissioning program held at the Republic of Korea Air Force Education and Training Command, Jinju.  It is a part of Basic Military Training Wing.  The current Commander, Air Force Education and Training Command is Maj Gen Jaewon Yoon. Air Force Training Group is the Royal Australian Air Force (RAAF) group responsible for training personnel.  It is headquartered at RAAF Williams, Victoria.  The group was established as Training Command in 1953.  It formed part of Support Command between from 1959 to 1990, when it was re-established as Training Command.  In July 2006, Training Command was re-formed as Air Force Training Group under Air Command.  Air Force Training Group units are organised into Air Training Wing, Ground Training Wing, Reserve Training Wing, and RAAF College. The Naval Air Training Command (NATRACOM) is a one star command that conducts flight training of student Naval Aviators, and Naval Flight Officers. Though it does not conduct Naval Aircrew training which is conducted by Naval Education and Training Command's Naval Aviation Schools Command (NASC), it is responsible for monitoring the production of Aircrewmen through the Naval Aviator Production Process (NAPP).  Through the NAPP, NATRACOM is also responsible for programming and monitoring the production of all (currently 19) Navy and Marine Corps Fleet Replacement Squadrons. Naval Officer Training Command Newport (or more simply, Officer Training School) is a unit of Naval Education and Training Command, located on Naval Station Newport in Newport, Rhode Island that is responsible to the Chief of Naval Education and Training for the development of civilians, enlisted, and newly commissioned personnel for service in the fleet as Naval Officers.  Outside of the requisite physical readiness testing, the programs are academic in nature, and with the exception of the student enrolled in the Naval Science Institute or Officer Candidate School, personnel will come to Officer Training School having already received their commission or warrant. The Air Force Reserve Officer Training Corps (AFROTC) is one of the three primary commissioning sources for officers in the United States Air Force, the other two being the United States Air Force Academy (USAFA) and Air Force Officer Training School (OTS).  A subordinate command of the Air University within the Air Education and Training Command (AETC), AFROTC is aligned under the Jeanne M. Holm Center for Officer Accessions and Citizen Development at Maxwell AFB, Alabama.  The Holm Center, formerly known as the Air Force Officer Accession and Training Schools (AFOATS), retains direct responsibility for both AFROTC and OTS.
Answer: Cruiser Destroyer Force Atlantic