A U.S. aircraft carrier has arrived in South Korea in a show of force, days after North Korea test-launched cruise missiles to demonstrate its counterattack capabilities.

The nuclear-powered warship from Carrier Strike Group 1 was accompanied by the guided-missile cruiser USS Princeton and the guided-missile destroyer USS Sterett, according to the navy

The arrival of the USS Carl Vinson and its strike group at the South Korean port of Busan is meant to display a solid US-South Korean military alliance in the face of persistent North Korean threats, and boost inter-operability of the allies’ combined assets, the South Korean navy said in a statement.

The Carl Vinson Carrier Strike Group arrived in South Korea only days after Pyongyang carried out its fourth missile test this year.