✈  SPECIAL REPORT  ✈

The U.S. military plane in Ushuaia: secrecy, sovereignty and the South Atlantic in dispute

A U.S. Air Force Boeing C-40 Clipper landed at the Malvinas Argentinas International Airport without an official statement, coinciding with the controversial intervention of the strategic port of Tierra del Fuego. The Argentine Navy found out through the media. The opposition demands explanations.

🔑 KEY FACTS ABOUT THE INCIDENT ▸  Aircraft: Boeing C-40 Clipper — 'office in the sky' with encrypted communications ▸  Origin: Joint Base Andrews, Maryland — the same base as Trump's Air Force One ▸  Route: Andrews → San Juan de Puerto Rico → Buenos Aires (Aeroparque) → Ushuaia ▸  Landing date: Sunday, January 25, 2026, after 11:00 a.m ▸  Passengers: bipartisan delegation from the U.S. Congressional Committee on Energy and Commerce ▸  Argentine statement: non-existent. Official information: provided by the U.S. Embassy only.

 

📰 The landing that no one announced

No official statement, no disseminated agenda, no explanations. That was the scenario surrounding the arrival of a U.S. military plane at Ushuaia's Malvinas Argentinas International Airport during the last weekend of January 2026. The aircraft, identified as a Boeing C-40 Clipper operated under the U.S. Air Mobility Command's RCH call code, landed shortly after 11 a.m. on Sunday, according to satellite trackers from civilian and military flights.

Just a day after landing, the U.S. Embassy in Buenos Aires confirmed that the aircraft was carrying a bipartisan delegation of members of the House Energy and Commerce Committee. But the Argentine government remained silent.

"There was no official information. Until yesterday it was a mystery." — Fuegian sources to La Política Online

 

🗺️ Why Ushuaia is not just any destination

The landing scenario is far from accidental. Ushuaia, capital of the province of Tierra del Fuego, Antarctica and South Atlantic Islands, is located almost 3,000 kilometers from Buenos Aires and is one of the most geopolitically sensitive points in the southern hemisphere. Its location makes it a gateway to Antarctica and a strategic passage between the Atlantic and Pacific Oceans.

⚓  The port of Ushuaia mobilizes about 700 ships a year, including ships that supply Antarctic campaigns and international cargo vessels.

🏗️  The Argentine Navy's Integrated Naval Base has been under construction since 2022 in its vicinity, a project that has captured the explicit interest of the U.S. Southern Command.

🔬  Ushuaia operates as a scientific logistics center for expeditions to the South Pole and as a port of call terminal for intercontinental maritime routes.

💎  The Patagonian region is also home to critical mineral reserves and the Vaca Muerta formation, considered the world's second largest reserve of unconventional gas.

 

🪖 The context: port intervention and previous signals

The landing of the C-40 Clipper did not occur in a vacuum. Just three days earlier, on January 22, 2026 – the same day the aircraft took off from Joint Base Andrews – the national government ordered the administrative intervention of the Port of Ushuaia, displacing the Provincial Directorate of Ports that had administered it since 1992 and placing it under the orbit of the National Administration of Ports and Navigation (ANPyN).

The provincial government of Tierra del Fuego, headed by the opposition Gustavo Melella, rejected the measure and described it as an abuse of federalism and a violation of the National Constitution. In an official statement, the Fuegian authorities hinted at undeclared geopolitical motivations behind the national decision.

"This intervention constitutes a subjugation of the autonomy of our province. There are geopolitical or economic intentions – not made explicit – that transcend the reality of the port." — Government of Tierra del Fuego

 

⚠️ The Argentine Navy found out through the media

One of the most resonant facts of the incident was revealed by La Política Online: the head of the Argentine Navy, Vice Admiral Juan Carlos Romay, learned of the arrival of the U.S. plane through the media, without having been previously notified by the national Executive Branch.

❗  Active military sources confirmed that the Argentine Armed Forces had no role in the arrival of the foreign aircraft.

🔐  The C-40 Clipper is considered an 'office in the sky': equipped with encrypted communications and areas for senior civilian and military commanders.

🌊  The aircraft operates under the U.S. Air Mobility Command (AMC), typically reserved for transporting high-ranking personnel.

 

🇺🇸 Washington's agenda and interest in the South Atlantic

The visit is not an isolated phenomenon. Since Javier Milei assumed the presidency in December 2023, Washington's interest in Argentina's extreme south has been manifested in a concrete way. In 2024, the then head of the Southern Command, General Laura Richardson, visited the Integrated Naval Base in Ushuaia. In September 2025, his successor, Admiral Alvin Holsey, repeated the visit accompanied by the embassy's chargé d'affaires, Abigail L. Dressel.

On both occasions, U.S. officials expressed concern about China's growing influence in the South Atlantic and Antarctica, a region where Beijing has systematically expanded its scientific and logistical presence. In this context, Milei authorized by decree the holding of joint military exercises and the entry of U.S. troops into Argentine territory.

The congressional delegation that transported the C-40 in January included representatives of the Energy and Commerce Committee. His stated agenda encompassed critical mineral processing, public health research, waste management and medical security — although no legislator was identified by name and there was no official exchange with the Argentine Congress or provincial authorities.

 

🏛️ The opposition demands answers

The arrival of the plane triggered chain reactions in the opposition political arc. From the Chamber of Deputies and the Senate, legislators from different blocs presented requests for formal reports to the Executive Branch, demanding explanations about the identity of the passengers, the objectives of the mission and whether the arrival was coordinated from Buenos Aires.

📋  The opposition presented requests for a report due to the lack of notification to the Argentine Congress.

🗣️  Deputies from the UCR, the Frente de Todos and the Fuegian bloc agreed to describe the episode as a worrying precedent for national sovereignty.

🚫  The government did not publicly respond to journalistic inquiries about the episode during the days after landing.

 

📌 What does this episode mean?

Beyond the debate over whether there were formal irregularities, the incident exposes a deep tension in the foreign policy of the Milei administration: the strategic rapprochement with Washington, which the government presents as a natural alliance between free nations, generates internal fissures and conflicting readings in the Argentine armed forces themselves, in the provinces and in a large part of the opposition.

The question that remains floating over Ushuaia is not whether the plane landed – the satellite tracking data admits no doubt – but what the government negotiated in silence, what the intervention of the port implies in that context and what is the price of the strategic alliance with the United States in a territory where Argentine sovereignty is,  since 1833, a historically sensitive issue.

🔗 Sources: CNN en Español | Profile | Online Politics | BíoBíoChile | Page 12