This is what I wish had happened during the One Chicago crossover event.

Severide was busy rescuing people from the rubble, and he was exhausted. He carried another person to the area where Rafferty and some others were helping the wounded. He was about to go back in when he heard Mills screaming his name.

"What is it, Mills?"

"It's Shay! We were at the hospital, and they told us she collapsed."

"What? What happened?"

"Not sure, but they said she lost a lot of blood."

He didn't want to leave the scene, but he couldn't focus unless he knew his best friend was okay.

"I gotta..." He started to say, but Mills cut him off.

"I'll tell chief."

He ran into the hospital and practically ran down a nurse. "I'm looking for Leslie Shay!"

I'm sorry sir but-"

"She's a paramedic."

She nodded. "I'll see what I can find out."

He paced back and forth for what seemed like forever. What happened to her? Did she fall? Was she hit? He needed to see her. He needed to know that she would be okay. She meant everything to him.

Suddenly the doctor showed up and explained what was going on. She needed to have surgery, but he could see her for a minute.

She was so pale. It scared him to see her so lifeless. He sat beside her bed, grabbing her hand.

"Shay, why didn't you tell anyone? You should have taken care of yourself."

He sighed, fighting back tears. "You're gonna pull through this, okay? You're gonna be fine. You have to be. It's always you and me."

The nurses came in to wheel her off to surgery, and he gave her a quick kiss on the hand and squeezed it one more time before watching her go. He walked back to the waiting room, and to his surprise he was greeted by firehouse 51.

Casey put his hand on his shoulder. "How's she doing?"

"It's bad, Casey. She's so weak. Damnit!" He screamed. "Why didn't anyone notice she was hurt? We were so focused on Dawson I didn't even know that my best friend was hurt!"

He couldn't stop the tears from falling any longer. He collapsed into one of the chairs and put his hands over his face.

Mills walked over and leaned down so he was eye level with Severide. "It's not your fault. She was doing her job. She was trying to save lives just like the rest of us."

"She can pull though this," Hermann chimed in, "She's tough."

"Yeah," Casey said, "She's put up with you for all these years. This is nothing compared to that."

He half smiled. He hoped that they were right. He really didn't know what he would do without Shay.