The puppet Joint Chiefs of Staff announced this on Sept. 24.

To be involved in the joint naval military exercises are huge armed forces including submarines of offensive nature of the U.S. imperialist aggression forces and their guided missile destroyers forward-deployed in Yokosuka base, Japan, patrol planes belonging to the 9th patrol plane squadron of the U.S. imperialists stationed in Hawaii and warships and planes with various missions of the puppet forces.

The warmongers blustered that they would conduct intensive training of the strategy, technique and procedures for countering someone's submarine infiltration, openly disclosing that the joint naval military exercises are targeted against the DPRK.