Why I don't work at sports arenas anymore

Chapter one

I'm a 19 year old man trying to become a hockey player. Well I was trying to, after an injury, my doctor said I shouldn't play anymore. Now I ref youth games. It doesn't pay much but I live with my partner. My parter James also works at the sports complex but cleans, his boss is a kind old man who is up for volunteers. After a heated youth game, I went up to the boss (John) and asked if I could volunteer tonight. Like always he said yes, like I said this 60-ish year old man loved volunteers, not because he didn't have to pay but because as he says, "you get a new view on life". After awhile, James came in for work. We got to work like usual, we cleaned up the stands, the parents with their kids always left things behind, sometime they were hats or clothing, but most of the times it was food or alcohol. James and I finished the first rink, the complex had three rinks in it, the first two were public but the last was a private one for guests holding parties. James and I made our way into the second rink, it was much cleaner but still had some garbage. We started to clean, James would accident hit the glass and cause the whole thing to shutter and make loud noises. James did this three times, I jumped out of fear each time. "How about we switch places!" I told James, James and I chuckled before moving.
A bad smell started to emit from a vent, "Do you smell that?" James asked, "Yeah" I said, the smell was almost one of meat, meat and sweat. James moved over to a large vent behind the stands, "need a light?" I asked handing him my phone." He grabbed my phone, the light covered the black void behind the vent. What is that?" James said, "what is it, let me see." I pushed past James towards the vent, in the very back was something, that something was almost light blue, "What the hell?" James said, the darkness mixed with the blue caused me to not make out any details. "I'll have John call a technician." James said, I could tell he was scared, he told me that he doesn't get scared much but when he does it's in serious conditions. James and I left, we decided that we'll do a quick clean of the private rink and then tell John.
The weird thing is that the private rink has no way to see inside. The other rinks have windows to see inside, this one though had a board with times and names of people who had reserved the rink. James went to open the door, he struggled with it, "it shouldn't be locked!" James was getting frustrated. Eventually I moved him to the side and grabbed the door handle. The door swung open, the air was heavy, I felt a pressure on my chest, this normally happened when I knew something bad. In front of us was another wall, the wall had pictures of kids in hockey gear, they smiled and crowded around a trophy. "I remember this" I said, James chuckled to himself, "I thought you were crazy when we got together." James never understood sports, when he met me, he said he liked how kind I was. After looking at all the photos, I went to the door. I grabbed the handle but jumped away. "What the hell?!" I said, the handle was freezing, I looked down at my hand, a blue line covered the middle of my hand. "How the hell?" James said, James went to open the door too but met the same result of a cold handle and a blue hand.