RAF C-17 Resupply Mission at World’s Northernmost Settlement

The Royal Air Force has demonstrated its growing Arctic operational capability after an RAF Boeing C-17A Globemaster III successfully landed at Canadian Forces Station (CFS) Alert, the northernmost permanently inhabited settlement on Earth. Situated approximately 1,100 miles inside the Arctic Circle at 82.5 degrees north, the remote outpost plays a vital role in NATO’s northern security network and climate research activities.

The mission formed part of Exercise Polar Puma under Operation Boxtop, a long-running Canadian resupply operation that sustains the isolated Arctic station during the harsh polar conditions. Operating alongside the Royal Canadian Air Force (RCAF), crews from the RAF’s 99 Squadron flew multiple sorties into the austere location, delivering vital fuel and supplies to ensure the continued operation of the strategically significant facility.

CFS Alert is located on the northern tip of Canada and is almost entirely surrounded by Arctic ice throughout the year. The station serves as both a critical signals intelligence hub supporting NATO operations and an important climate monitoring and scientific research centre. Due to the extreme geography and environmental conditions, conventional maritime resupply is impossible for most of the year. Even during the brief annual thaw, waters remain too shallow for supply vessels to reach the station.

As a result, all heavy logistics support must be delivered by air using specially equipped transport aircraft capable of operating from a semi-prepared runway composed of gravel and compacted snow. The runway itself is less than half the length of a conventional airport strip, presenting unique operational challenges for large strategic airlifters such as the C-17.

The RCAF traditionally conducts these demanding resupply missions twice annually, transporting close to one million litres of jet fuel required to keep the station operational through the Arctic winter. The fuel powers everything from heating systems and generators to communications infrastructure essential for operations in the High North.

For the first time, the RAF has now joined the mission, highlighting the United Kingdom’s increasing focus on Arctic operations and interoperability with NATO allies in the region. Operating from Pituffik Space Force Base in Greenland, RAF crews conducted eight flights into Alert, delivering nearly 300,000 litres of fuel during the deployment.

Flight Lieutenant Mike Chandler of 99 Squadron described the mission as both challenging and rewarding. “Flying into the High Arctic is demanding, especially when the weather can change on a dime, but that’s exactly why this activity is so important,” he said. “Working with our Canadian colleagues has shown just how closely our air forces operate together. The C-17 performs superbly in these conditions, and it’s a real privilege to contribute to a mission that is so vital to sustaining operations at Alert.”

The deployment also served as an important opportunity to strengthen operational integration between the RAF and RCAF. Personnel from both air forces worked together across operations, engineering and logistics functions, with mixed aircrews flying aboard each other’s aircraft, a level of cooperation rarely seen since the Second World War.

Air Commodore James, Commander of the RAF Air Mobility Force, said the deployment underscored the RAF’s global reach and expeditionary capability. “This is a powerful demonstration of the RAF’s reach, readiness, and capability,” he said. “Operating thousands of miles from the UK, in the extreme cold and with limited infrastructure, proves that we can generate operational air mobility wherever it is needed.”

The RAF’s fleet of eight C-17A Globemaster IIIs, based at RAF Brize Norton, has formed the backbone of the United Kingdom’s strategic airlift capability for the past quarter century. The aircraft has supported operations ranging from Afghanistan and Iraq to humanitarian relief missions worldwide, proving particularly effective in austere and remote operating environments.

The Arctic deployment further reinforces the RAF’s commitment to expanding its capability to operate in extreme northern conditions as geopolitical and strategic interest in the Arctic region continues to grow. Through missions such as Operation Boxtop and Exercise Polar Puma, the RAF is not only enhancing its cold-weather operational expertise but also strengthening NATO cooperation and readiness in one of the world’s most challenging environments.