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.
Even though Rangers learned basic close-quarters combat and marksmanship in the GSDF Ranger Course at Fuji School, they found maritime counter-terrorism operations entirely new territory. Consequently, MSA officers were forced to conduct trial and error experiments on their own to apply these techniques effectively in maritime contexts.