However basic close quarters combat and marksman techniques were acquired in the GSDF Ranger Course at Fuji School, maritime counter-terrorism operations was an unknown field even for Rangers, so the MSA officers had no choice but to conduct trial and error by themselves about how to apply those techniques in maritime operations.
Despite acquiring basic close-quarters combat and marksmanship skills through the GSDF Ranger Course at Fuji School, maritime counter-terrorism operations remained uncharted territory for Rangers. Consequently, MSA officers were compelled to conduct trial and error experiments themselves to figure out how to implement these techniques in maritime contexts.