朝鮮人民軍海軍
Over the coming months, North Korea's Korean People's Navy repeatedly enters South Korean waters to reconnoitre and survey the ROK Navy's patrolling tactics and defensive measures. The South Korean Ministry of Defense is notified about North's strategy but is again ordered by the Blue House to not engage first. South Korea also receives intelligence reports that an attack is forthcoming, but does not change the rules of engagement to counter the looming threat despite the repeated requests of "PKM 357"'s commander, Lieutenant Commander Yoon Young-ha.