Denmark is participating for the first time in the world’s largest naval exercise, the Rim of the Pacific (RIMPAC).
The huge exercise, which will involve 27 countries and 25,000 people, will run from June 30 until August 4.
The exercise will take place off the coasts of Hawaii and southern California and involve 45 ships, five submarines and over 2,000 aircraft.
Along with Denmark, Brazil, Germany and Italy are all participating for the first time.
China, which has recently endured the brunt of strong international criticism for its presence in the South China Sea, will also participate.
RIMPAC was first conducted in 1971. Once a yearly event, the logistics of arranging such a large event forced it to become biennial.
The US Navy did not say how many men, ships or aircraft Denmark will provide to the exercise.