A/N: First off, I made a mistake in the last chapter. There are only three chapters, but they are still so jammed pack, and it means less reading for you, and the chapters are technically longer, so all is good!

Secondly, because of the amount of amazing people that reviewed and favorited and followed this story in approximately 24 hours, I have decided to post this one now, BEFORE THE EPISODE I HAVE BEEN WAITING FOR! Seriously guys, ask my amazing beta Journalism13 and my Fanfiction Bestie Belle.0416 about how I haven't been able to stop talking about this episode. I am so super duper excited.

Once again, thank you all for the wonderful feedback about this story, and for those of you waiting for chapter 2 of When It Goes South, have no fear, that will be updated shortly after this update!

Lucky you guys!

Anyways, disclaimer stays the same. I don't own them unfortunately, but for Jay Halstead's sake, it's probably a good thing. I also am not in the medical profession nor do I care to be. So all medical jargon is probably wrong!

ENJOY!

CHAPTER 2

After the getting the information, it only took the unit about thirty minutes to get to the warehouses, but by then it was getting dark and the weather went from 20 degrees to a frigid 4-5 degrees Fahrenheit. Jay stopped complaining about the weather that had started to slowly drop little pellets of snow to the ground. Finally they made it to the row of warehouses that were feet away from just another harbor in Chicago, and it didn't take long for them to search the first building.

And then they started on the second. While it wasn't as windy, the warehouse was still frigid and cold enough to see your breath in, and Jay knew that same fact was on all the other's minds. They cleared the bottom floor and all met back up, then started heading up the stairs, quickly, quietly, and as a unit, when a cry was heard from above. Running into the large, oddly empty upper portions of the warehouse, the unit was met with a sinking sight.

A man twice the weight, and at least a foot taller than Voight stood next to large windows that faced out against the harbor. The window was broken, and in his arms, was Jennifer.

She was pale, scared, and crying and the man was evidently about to jump when he saw the cops. He turned his back to them, so that all they could see of the girl were her legs on one side of the giant body, and her hair swinging wildly on the other. With just a sick flash of a smile over his shoulders, and a few inaudible Spanish words the man jumped, and the team froze for half a second…

… And then Jay ran to the window as well, and without a seconds thought jumped.

The team heard the breaking of ice and splashes moments later, followed by a gunshot. Erin rushed to the window, but could hardly see anything but the dark waters beneath her. Turning, she led the rest of the team down the stairs, and out the doors, over to the railings that looked over the edge, into the waters twenty feet below.

"JAY!" She shouted over.

Moments later, a tiny head popped above the water, gasping for breath, her head bobbing up and down. She sank under again, and it stayed that way for about a minute, the team searching every which way in the water for any sign of the girl, and any sign of their teammate.

Then they saw them. Jennifer's head surfaced first, followed closely by Jays head. She was clinging to his back while he was swimming for the both of them.

"JAY!" Erin shouted again.

Jay slowly looked up at the group, and the majority, despite the fact that visibility was low, and he was 20 feet away, they could see his blue lips and practically hear his chattering teeth.

"E-erin." His head bobbed under for a second and the little girl screamed but it resurfaced and he shook out as much of the water as he could out of his hair again.

Erin didn't trust herself to speak, so she allowed Voight to do the speaking instead.

"Jay, you need to take off the jackets, they are going to weigh you down." Voight said calmly, despite the deadly situation from which the young Jennifer and Jay found themselves in.

Jay smirked up at his boss and he twisted the girl around to his front.

"Th-think I was b-born yest-terday?" He asked, showing off his long sleeve shirt from earlier, no jackets or coats in sight.

Voight watched as an officer from behind him brought over a rope ladder that he quickly swung around the edge and attached to the railings. "Alright, Jay, swim to the ladder, Antonio is going to come down to help with the girl, and then you come up, OK?"

Jay nodded his head, then swam slowly to the wall of cement as Antonio began to rush down the ladder. Antonio grabbed the girl, off of Jays back once the three met, and quickly began to climb back up.

Jay went to grab onto the ladder, but stopped as his hand hit it and then flopped back into the water. He looked up to his boss and slurred out, "Voight, I can't feel my fingers."

Erin helped pull Antonio over the edge along with Jennifer whose own lips were turning blue.

Antonio looked to Erin gravely, "Hypothermia is setting in, he isn't shivering anymore and he is slurring his speech."

Erin wrapped a blanket around Jennifer's body, than allowed an officer to carry her to warmth as they waited for an ambulance to arrive. Voight heard the information as well.

"Come on Halstead, you have to try." Voight yelled down.

"I can't Voight." Halstead slurred again.

He slowly began to sink beneath the surface, but quickly surfaced again as he realized what was happening.

'Shit.' he mumbled to himself.

Or at least he thought. Voight looked down with Erin and Antonio as Jay began to mumble to himself.

"Someone has to go down there to at least keep him afloat. Until rescue squad can get here." Voight said, realizing that the one promise he had made to his team, that everybody was coming home, was being broken.

Antonio volunteered himself as he promptly slipped over the edge again, climbed down the ladder and grabbed onto the backside of Jay's vest, which remained rather light despite being thoroughly soaked.

Halstead shook his head as he felt the hand grab onto his back. He concentrated on breathing, as it became shallower and he could no longer keep his eyes open.

"Come on Jay, stay with me." Antonio asked Halstead as he continued to hold the man afloat.

Jay's eyes shot open as he inhaled some water and he shook his head sluggishly. "I'm t'yin'."

"Well try harder." Antonio joked as he gently turned his friend towards him, grabbing onto the front of his vest instead so that he could make out his eyes. "The girl is going to live. Thanks to your stupid ass decision."

Jay smirked, his eyes once again closed. Antonio shook him, allowing the icy water to lap against himself. He shivered at the touch and couldn't imagine what Jay was going through. A chunk of ice gently collided against the wall by Antonio and he tried to lift the soaked man out of the water, but could only raise him a few inches.

"Jay. You need to stay awake." Antonio began to beg the young man to continue to fight for his own life. Knowing there was only so much he could do from his own positon. "You have to know you have hypothermia. I don't know how it set in so quickly, but you do."

Jay coughed feebly.

"Might be the pneumonia." He stated calmly.

Antonio chuckled then shrugged as well as he could. He could hear the sirens of a fire truck and ambulances up above, and he could see the lights flashing against the building.

"Helps here, OK, just hang tight." Antonio encouraged, knowing it could very well be too late for help, but making sure Jay knew none the less.

Jay didn't respond this time, just nodded his head slightly. Antonio continued talking and Erin and Voight watched from above as the firemen lowered down two harnesses, and a third with a firemen, Kelly Severide, in a divers suit.

Two minutes later, all three men were top side, but by the time, it seemed too late. The firemen laid Jay down on a stretcher, where everyone could finally get an up close view of him. Jay was white as a sheet, his lips and fingertips blue. Gabriela Dawson quickly shed the man of his vest, leaving only his soaked clothes seeping him of his heat, but the medics were quick to cut those off of him, leaving him only in his boxers and shoes. It was around this time, that Jay's heart stopped beating, and his breathing stopped.

A/N 2:SO what do you guys think? Ready for the ending of this story? Ready to see if Halstead survives or not? LEt me hear you in the form of a review and or PM, they make me so happy when they blow up my inbox. They are like my Jay to your Lindsay. HAHA, that didn't make sense, oh well.

See ya when I see ya.