Jay sat up at his desk and picked up his phone but as soon as he looked at the caller I.D, he stood up and raced into the break room but as he got to the door he turned around,

"Mouse... You got a sec?" He said looking at him

"Yeah" He said as he walked through and shut the door behind him.

Mouse sat on the couch as Jay answered the phone, "Hello"

"Is that Jay Halstead?"

"Yes it is, what's this regarding?"

"I've been asked to call by you commanding officer, Karl Bates. He was very sorry he couldn't ring but he needs you and Greg Gerwitz to return to Afghanistan for a recon mission."

"A recon mission for what?"

"You're old squad disappeared while travelling through a village"

"When do we need to be out there?" Jay said as Mouse looked at him

"Two days, your flight leaves in two day. I'm sorry but I have to go" He said putting the phone down.

Jay looked at Mouse not knowing what to say, "When?"

"Two days"

"Dammit Jay, we promised we would never go back and put ourselves through that again"

"I know but Paul's squad, our old squad has gone missing while travelling through a village and they want us to find them"

"Ok, what are we going to say to everyone?"

"Not right now, we need to finish this case and we'll tell them tonight"

"Even Erin?"

"Especially Erin, she doesn't need the stress"

Jay and Mouse walked out of the break room and went back to their desks, "Everything ok?" Erin said looking at Jay

"Yeah no problems, how's the case going?"

"Nowhere, three dead teenagers and no leads apart from them all being shot in the head."

"Um... yeah" Jay said but he wasn't really paying attention.

A few hours later Voight came out of his office, "We got a fourth murder but Burgess and Atwater are chasing the shooter down 34th street, Let's go"

The team got up from their desks and ran down the stairs grabbing their guns and vest but as Jay left he ran over to Erin and gave her a kiss, "Hey Mr Professional?" she said pushing him off

"Sorry, see you soon"

"Stay safe!" She shouted as he left.

At the scene

"Hey Halstead,can you think of anyway..." Dawson looked up at Jay but he was out of it, "HALSTEAD?"

"What?" He said looking up

"What's going on with you today, weird phone calls, you seem to be somewhere else"

"I'm just worried about Erin that's all"

"Why?"

"Well she just over two months till her due date and I just want her to be careful"

"What can be more careful than her sitting behind a desk?"

"It can just be a bit stressful sometimes"

"She's tough man"

"Yeah you're right"

Jay and Antonio looked around the scene but didn't find much so they jumped back in the car and drove back to he district. They sat down at their desks when Voight and everyone else came up the stairs, "Case is over, We got him. Finish up here on then go home, it's about time everyone got some sleep"

Everyone finished up paperwork and was about to leave when Jay and Mouse looked up at each other and stood up, "Guys, me and Mouse have something we need to tell you" They said walking to in front of Voight's office,

"What's going on?" Voight said walking past them

"Me and Mouse had a phone call this morning... they need us back in Afghan for a recon mission..." Jay stopped talking to let everyone take it in and he continued, "We leave in two days"

Everyone seemed shocked but Jay watched as tears fell off Erin's face. She stood up and started to walk away but Jay walked up to her, "Erin please...". Jay waited for her to turn around but as she turned the team gasped as she slapped him around the face, "Why didn't you tell me?"

"I didn't know how to, I'm sorry"

"You're my husband Jay, we're having a child in two months" She cried

"We don't want to go back Erin but we need to rescue our friends, they're like our family"

"And what about our family JAY! Me, your wife and your son huh, you just going to leave us"

"I didn't mean for any of this to happen, i'm so sorry"

Erin put her hand up in front of Jay and started to turn around, "I need a minute" She said walking away through towards the interview rooms. Jay didn't follow Erin he just went and sat down at his desk and put his head in his hands.

Erin's POV

I walked through to the locker room holding on to the wall while walking. I sat down on the bench and cried, I couldn't believe he was going away again. The undercover was bad enough for me, when he didn't come home I thought I lost him and I couldn't have that to happen again.

I sat in the locker for about half an hour until I finally managed to calm down, I opened the door and walked out to see the whole team sat at their desk. I saw Jay out of the corner of my eye stand up. I saw him stood their and I walked over to him and wrapped my arms around him, "You have to promise me that you will be on that Plane home"

"Erin I don't have to promise, because I will be on that plane"

"I'm sorry for hitting you"

"It's ok, you were mad...now why don't we go home?"

"Yeah I'd like that" I said taking Jay's hand and walking through the bullpen.

Nobody's POV

Jay and Erin got to their apartment and went straight to bed. They laid in bed cuddling when she looked up at him, "I'm going to miss your cuddles"

"I know, I will too"

"Do you think you will be gone for long?"

"It depends but I really hope not but I'll call when I can, wherever I can."

"I love you so much"

"I love you too" Jay said kissing her head.

Jay and Erin sat speaking for most of the night about anything they could think of, "At least the nursery is done for when he's born"

"I'm not going to miss it you know... the birth" Jay said

"I hope not" Erin said snuggling into him.