Canadian Defence Minister David McGuinty attends a Defence Science and Technology showcase at RAAF Defence Establishment Fairbairn in Canberra on March 5, 2026, (Photo by Hilary Wardhaugh / POOL / AFP via Getty Images)

Australian Chief of Air Force Stephen Chappell (L) introduces Canadian Prime Minister Mark Carney to Australian Defence Minister Richard Marles (R) during a Defence Science and Technology showcase at RAAF Defence Establishment Fairbairn in Canberra on March 5, 2026, (Photo by Hilary Wardhaugh / POOL / AFP via Getty Images)

Craig Hardie (R) speaks with Canadian Prime Minister Mark Carney during a Defence Science and Technology showcase at RAAF Defence Establishment Fairbairn in Canberra on March 5, 2026, (Photo by Hilary Wardhaugh / POOL / AFP via Getty Images)

Australian Defence Minister Richard Marles attends a Defence Science and Technology showcase at RAAF Defence Establishment Fairbairn in Canberra on March 5, 2026, (Photo by Hilary Wardhaugh / POOL / AFP via Getty Images)

Craig Hardie (R) speaks with Canadian Prime Minister Mark Carney as Australian Defence Minister Richard Marles (L), Canadian Finance Minister Francois-Philippe Champagne, Canadian Defence Minister David McGuinty and Australian Chief of Air Force, Air Marshal Stephen Chappell look on during a Defence Science and Technology showcase at RAAF Defence Establishment Fairbairn in Canberra on March 5, 2026, (Photo by Hilary Wardhaugh / POOL / AFP via Getty Images)

CANBERRA, AUSTRALIA - MARCH 05: Craig Hardie (R) speaks wth Canadian Prime Minister Mark Carney as Canadian Minister of National Defence David McGuinty looks on during a Defence Science and Technology showcase at RAAF Defence Establishment Fairbairn on March 05, 2026 in Canberra, Australia. Carney is in Australia to discuss trade and other matters. (Photo by Hilary Wardhaugh/Getty Images)

CANBERRA, AUSTRALIA - MARCH 05: Dr. Roland Keir (R) speaks with Canadian Prime Minister Mark Carney (C) as Australian Minister for Defence Richard Marles and Australian Chief of Air Force Stephen Chappell and colleagues look on during a Defence Science and Technology showcase at RAAF Defence Establishment Fairbairn on March 05, 2026 in Canberra, Australia. Carney is in Australia to discuss trade and other matters. (Photo by Hilary Wardhaugh/Getty Images)

CANBERRA, AUSTRALIA - MARCH 05: Australian Minister for Defence Richard Marles attends a Defence Science and Technology showcase at RAAF Defence Establishment Fairbairn on March 05, 2026 in Canberra, Australia. Canadian Prime Minister Mark Carney is in Australia to discuss trade and other matters. (Photo by Hilary Wardhaugh/Getty Images)