The next day, the two detectives are in Jay's car on the way to a location that Voight texted them. "So, do you want to give training Casper another go tonight?" Hailey asks Jay, trying to start a conversation, while also not wanting to tip Jay off about calling his brother.

"Can't tonight," he tells her. "Will wants me and Casper to come over for dinner and to catch the game. Something about not hanging out in a while."

"That's good," Hailey tells him.

"You're not mad?" Jay asks unsure.

"No," Hailey answers in disbelief. "Why would I be?"

"Because… you're using your free time to help and…" Jay trails off.

"Hey, I think it's important that you're spending time with your brother. We can work on training Casper another day. Just let me know what day works for you."

"Are you sure?"

"Positive," Hailey promises. "Hey, I think this is it," Hailey changes the subject.

Looking over to where Hailey pointed out, Jay sees two patrol cars with their lights still flashing and a large crowd gathering around. They look at each other before getting out of the car, going over to the patrol officers to find out what they know so far.

"This isn't going anywhere," Jay complains when he and Hailey are in his car on the way back to the district.

"I know, but there has to be something that we're missing," Hailey adds.

"Do you think the others got anything?"

"I hope so."

"I need to let Casper out. Do you mind stopping real quick?"

"Yeah, no problem," Hailey answers as Jay turn in the direction of his neighborhood.

Parking outside of his building, Jay gets out of his truck while Hailey waits for him. Looking around, she sees Jay walking out of the building with the growing puppy happily walking with him. After doing what he needed to, Jay takes the dog back inside reappearing to the truck minutes later.

"Casper looked happy," Hailey comments.

"He's a happy dog," Jay replies, getting into the driver's seat. "I just feel bad about leaving him so much."

"It's part of the job, our hours, but Casper loves you. I can see it."

Jay remains quiet the rest of the ride and Hailey doesn't push him, knowing he will come to her when he is ready.

"Molly's anyone?" Kevin asks as they finish for the day.

While the rest of the unit agrees, Jay answers, "I have plans with Will."

"He can come too," Adam adds, not getting what he is saying.

"I think Jay wants to spend time with his brother without everyone else around," Hailey intervenes. Jay gives a small smile towards Hailey as a thanks.

Seeing that Jay isn't going to change his mind, Adam shrugs his shoulders as he shuts down his computer before he heads out for the day. The rest of the unit follows his lead one by one, leaving Hailey and Jay alone in the bullpen. "Text me if you need anything," Hailey reminds him before leaving herself.

Jay follows her out, going to his own truck to head home and get Casper before going to his brother's.

Jay hits surprisingly little traffic on the way home. Letting Casper out of his cage, Jay grabs what he needs for Casper to take to Will's. Putting Casper's things in his truck, Jay makes Casper go before driving to his brother's apartment building.

Casper, up to his usual car antics, makes Jay pet him the whole drive.

Jay texts Will when they arrive, so he can buzz them up. Walking into his brother's apartment, Jay makes himself at home, filling Casper's water and food dishes, as he greets Will.

"How you two doing?" Will asks, hoping Jay will tell him for himself about what had happened last night.

"We're good," Jay answers.

Seeing that Jay is answering with the least amount of words possible, he tries a different approach, "So, Hailey was telling me before that you can start training service dogs their tasks when they reach eight months. Casper has to be around there soon. When are you going to start training Casper?"

"Um, Hailey came over last night and we started going over the process of what to do," Jay answers carefully.

"Cool. Let me know when the next time you have a training session on the tasks," Will tries to open that can of worms.

"Why?" Jay asks confused.

"Because I want to be part of this process with you," Will tells him. "That is, if you want me to," he adds, wanting the decision to be up to Jay, but at the same time, hoping that his brother won't push him away.

"Why would you want to? Don't you have better things to do?" Jay asks, not believing that Hailey was right, that, or his brother isn't lying to him.

"Because you're my brother. What do you think I have is so important that I don't have time for you, during something so important?" Will questions him in disbelief.

"I don't know," Jay answers. "Anything… I mean we don't even know if this is going to work. It could all just be a waste of time. This might not be able to fix me, like you planned."

Even though Hailey had given him a heads up about what had transpired during their first training session, he still doesn't believe this is what is running through his baby brother's mind. "What do you mean 'fix you like I planned'?"

"Isn't that why you had me get Casper?" Jay asks confused, "To fix my PTSD?"

Sighing, Will tries to think of a response that Jay won't twist. "No. I wanted you to get Casper because I didn't want you to be alone. I don't care that you have PTSD, I just hate seeing you hurt– physically, mentally, emotionally. You're right, we don't know if this is going to work, but since you got him, I've seen the Jay Halstead I knew before he went to fight a war. I don't care if it doesn't work, you are still my brother," Will promises, pulling Jay into a hug and resting his head on top of his brother's.

Will gets lost in thought, thinking about how he wishes their mom was still here. She would know what to do and what to say- more importantly, Jay had always listened to her. She could make anything and everything better, while at times Will felt like he only made things worse for his brother.

"Thanks," Jay whispers bringing Will out of his internal turmoil.

"For what?" Will asks confused.

"For being you. For being my brother," Jay answers resting his head on Will.

"I think we need to reheat the pizza," Will tries to lighten the mood.

"I'm not hungry," Jay tells him.

"Do you feel sick?" Will asks concerned.

"No, just not hungry," Jay answers, still thinking about the conversation he just had with his brother.

"Try to eat one piece," Will pushes.

"Are you sure you're good to drive?" Will asks three hours later when Jay and Casper are getting ready to leave after watching the game and Will managing to get Jay to eat two and a half pieces,

"I'm fine."

"You know I don't mind you guys staying."

"We can't. I cut it too close getting to work last time," Jay insists.

"Okay," Will gives in, "but text me if you need anything. I mean it."

Jay only nods in acknowledgment before leading Casper out of Will's apartment.

Once the door shuts behind him, Will looks over to Kohl, "Do you think I talked some sense into him?" he asks the dog. Kohl just cocks his head to the side. "I hope so too."