That day, Lisa's unit was getting introduced with Chemical Radioactive Biological and Nuclear (CBRN) readiness, which included the proper usage of breathing masks.
They began with the theoretical instruction where they were taught about the equipment they would be using, how to protect themselves against a chemical/biological hazard.
Recruits were taught how to put on gas masks, how to clean their skin and masks after exposure, how to test unknown substances with a paper that turns different colors, and how to deal with casualties.
They had a break for lunch, then lined up in front of a chamber.
"This is the gas chamber. It goes by many names - house of horror, confidence chamber, chamber of horror - but no matter what the soldiers call it, they all must pass through its walls during Basic Training." Lieutenant Jang started his introduction.
"Here, you will learn how to recognize and properly react to dangers of chemical biological, radiological and nuclear attacks," said Sergeant Cole.
Then he looked at General Lim and said, "It's better you stay out, General. Sergeant Park and I can manage everything."
Jungkook's eyebrow arched and he replied, "It's been a while, Sergeant since I have last observed how you do this training. I'm sure Lieutenant Jang by my side has been missing the gas chamber by now too. You can make him inspire the recruits and show them how Lieutenant Jang has mastered the gas chamber."
Torin gulped upon hearing Jungkook and he looked at him with wide eyes, as his nostrils flared in bewilderment.
This was the worst part of the training that he hated the most during their times.
He couldn't forget how he threw up several times back then. He could still smell something horribly pungent when he was near the gas chamber.
"Am I right, Lieutenant Jang? Show the soldiers how tough you can be by reciting the Soldier's Creed," added Jungkook and Torin almost wanted to run away.
"Alright, soldiers! Get ready and wear your protective masks and special chemical-protective gear. 10, 9, 8, 7, 6, 5, 4, 3, 2, 1..." shouted Sergeant Park.
They had already been instructed how to dawn, clear and seal the mass in a chemical, biological, radiological and nuclear environment.
Lisa was a bit nervous because she had seen in the videos before how terrible the experience could be.
Jungkook checked Lisa's line to see if the masks were properly sealed.
He instructed the Sergeants and Torin to do the same to other lines.
Sergeant Park looked at Torin with questioning eyes because they had never checked the masks before.
It's the consequences the recruits must face if they didn't listen well during the instructions.
Torin answered Lieutenant Park by shrugging his shoulders.
'More suspicious moves and soon, you'll be digging your own grave, Bro!' Torin wanted to shout to Jungkook who was now busy on making sure Lisa's mask had no leaks.
"What the hell is wrong with your mask?" Trish asked with a concerned voice because she noticed that General Lim took time on inspecting Lisa's while hers and the others' didn't take that long.
"Hmm, I'm not sure but I feel like he wanted to glue this mask to me. It's freakin' tight, Trish!" Lisa complained as her heart was still thumping fast because of Jungkook's gentle hands on her face as he adjusted the mask.
Lieutenant Jang had already informed them that they would do some talking, facial expressions, and light exercises to increase their heart rate and breathing inside the gas chamber.
