On September 16, Administrator Yoon Youngbin of the Korea AeroSpace Administration(KASA) visited the Naro Space Center in Goheung to oversee final preparations for the fourth launch of the Nuri rocket. The final pre-launch test(Wet Dress Rehearsal, WDR) involved erecting the rocket on the launch pad, verifying system connections between the launch vehicle and the launch pad, and checking the rocket’s integrity by loading cryogenic oxidizer at -183℃ under conditions identical to the actual launch sequence.