Question: Which branch of the U.S. military maintains a highly classified remote detachment of a base in the state of Nevada?

Context paragraphs:
Area 51: The United States Air Force facility commonly known as Area 51 is a highly classified remote detachment of Edwards Air Force Base, within the Nevada Test and Training Range.  According to the Central Intelligence Agency (CIA), the correct names for the facility are Homey Airport (ICAO: KXTA) and Groom Lake, though the name "Area 51" was used in a CIA document from the Vietnam War.  The facility has also been referred to as "Dreamland" and "Paradise Ranch", among other nicknames.  The special use airspace around the field is referred to as Restricted Area 4808 North (R-4808N).

Black project: A black project is in the vernacular of the United States and United Kingdom militaries, a highly classified military or defense project, unacknowledged publicly by the government, military personnel, or defense contractors.  Examples of U.S. military aircraft developed as black projects include the F-117 Nighthawk stealth attack aircraft and the B-2 Spirit stealth bomber, both of which were highly classified and denied as existing until ready to be announced to the public.  In the United States the formal term is "Special access program (SAP)".

Thule Tracking Station: The Thule Tracking Station (TTS, ) is a Greenland military installation near Thule Air Base and which has a Remote Tracking Station (callsign: POGO) of the U.S. Air Force Satellite Control Network.  Originally the classified 6594 TW's Operating Location 5 designated by Air Force Systems Command on October 15, 1961: the station was operational on March 30, 1962, with "transportable antenna vans parked in an old <nowiki>[</nowiki>SAC] bomb assembly building."  The permanent RTS equipment was emplaced in 1964, and a communications terminal was emplaced on Pingarssuit Mountain--Thule Site N-32 (moved to Thule Site J in 1983.  TTS transferred to Detachment 3, 22nd Space Operations Squadron, in 1992 and includes a "fully equipped mini-fitness center".  The stations "C-side" of electronics was removed in summer 2011 and the upgrade to an Automated Remote Tracking Station is forecast to be completed in 2015.

Rachel, Nevada: Rachel is a census-designated place (CDP) in Lincoln County, Nevada, United States.  As of the 2010 census it had a population of 54.  As the closest habitation to the Nellis Air Force Range and Area 51, Rachel enjoys a modest celebrity, particularly among aviation enthusiasts and UFO hunters.  North of the town is the Quinn Canyon Range, which has the ghost town of Adaven.

Judge Advocate General Branch (Pakistan): The Judge Advocate General Branch of the Pakistan Armed Forces is composed of Pakistan's Military senior officers, lawyers and judges who provide legal services to the Army, Air Force, Navy, and Marines at all levels of command.  JAG branch comes directly under the Adjudant-General Branch of the army.  The Judge Advocate General's Legal Service includes judge advocates, warrant officers, paralegal noncommissioned officers and junior enlisted personnel, and civilian employees.  In Pakistan, the Judge Advocate General can have the rank of Lieutenant-General, Major or Brigadier-General.  The JAG is currently led by the combined Pakistan Armed Forces's senior-rank officers that includes the Vice Admirals of the Navy, Air Marshals of the Air Force, and the Lieutenant-Generals of the Army whose names are kept highly classified.

David H. Huntoon: Lieutenant General David Holmes Huntoon, Jr., USA completed a 40-year military career serving as the Superintendent of the U.S. Military Academy at West Point, New York.  He commanded West Point from July 15, 2010 until July 15, 2013, and retired from the Army on November 1, 2013.  During his time in uniform, Huntoon served in infantry, planning, operations, training, strategy, and leader development positions, and commanded organizations from Platoon level to Army Major Command.  Throughout his military career, Huntoon had alternating assignments between operational and leader development postings, and he gained a reputation as a highly skilled and innovative educator and a soldier-focused commander.  He is the only Army general officer to have led the U.S. Army Command and General Staff College, the U.S. Army War College, and the U.S. Military Academy.  Huntoon has unique experience in leader development in the U.S. military, and significantly influenced leader development programs in the U.S. Army as a general officer.  As a Major, Huntoon wrote principal elements of the U.S. operational plan for the U.S. invasion of Panama (1989), and was a lead planner in the XVIII Airborne Corps plan for Operation Desert Storm (1990-1991).

John T. Hughes (intelligence officer): John T. Hughes (1928-1992) was an intelligence officer of the U.S. Defense Intelligence Agency, specializing in Soviet military capabilities and best known for his nationally televised briefing on the removal of Soviet missiles in Cuba, during the Cuban Missile Crisis.  A past photo analyst, Hughes had been part of the famous U-2 collection program from the earliest days of its operation.  Over the years he personally briefed Presidents John F. Kennedy, Gerald R. Ford, Jimmy Carter and Ronald Reagan on highly classified photographs of Soviet military installations and other sensitive security matters.  Hughes guided DIA’s collection and analysis, and served as a principal intelligence adviser to the Secretary of Defense, the Chairman of the Joint Chiefs of Staff, and the Director of the Defense Intelligence Agency.

Courts-martial in the United States: Courts-martial in the United States are trials conducted by the U.S. military or by state militaries.  Most commonly, courts-martial are convened to try members of the U.S. military for criminal violations of the Uniform Code of Military Justice (UCMJ), which is the U.S. military's criminal code.  However, they can also be convened for other purposes, including military tribunals and the enforcement of martial law in an occupied territory.  Federal courts-martial are governed by the rules of procedure and evidence laid out in the Manual for Courts-Martial, which contains the Rules for Courts-Martial, Military Rules of Evidence, and other guidance.  State courts-martial are governed according to the laws of the state concerned.  The American Bar Association has issued a Model State Code of Military Justice, which has influenced the relevant laws and procedures in some states.

Janet (airline): A highly classified small fleet of passenger aircraft known as "Janet" is operated for the United States Air Force to transport military and contractor employees.  It mainly serves the Nevada National Security Site (most notably Area 51 and TTR), from their terminal at Las Vegas' McCarran International Airport.  The fleet's "Janet" call sign, from which its "de facto" name comes, is said to stand for "Just Another Non-Existent Terminal".

Operation Tracer: Operation Tracer was a highly classified World War II military operation based in Gibraltar, a British colony and military base.  The impetus for the plan was the 1940 scheme by Germany to capture Gibraltar, code-named Operation Felix.  Operation Tracer was the brainchild of Rear Admiral John Henry Godfrey, the Director of the Naval Intelligence Division of the British Admiralty.  In 1941, he decided to establish a covert observation post at Gibraltar that would remain operational even if Gibraltar fell to the enemy.  From the facility, the movements of enemy vessels would be reported back to the United Kingdom.  Godfrey requested the assistance of several distinguished consultants to bring the plan to fruition.  The plan was so top secret that Godfrey held meetings with his consultants at his private residence rather than at Whitehall.  The decision was made to construct the facility using the existing tunnel system for Lord Airey's Shelter, the underground military shelter just north of Lord Airey's Battery.  The artillery battery was located at the upper ridge of the Rock of Gibraltar, near the southern end of what is now the Upper Rock Nature Reserve.

Supporting paragraphs: Rachel, Nevada Area 51
Answer: Air Force