It was another long day but this time at least they dug out some productive leads to follow. The combined teams had a pretty good idea which hospital the UNSUB was going after next, and they were attempting to work out a strategy on catching the guy.

"Ok so Morgan you and McGhee will work the delivery angle, if it's coming in on their supply order we need to find it before it gets to the hospital."

"Got it Boss." McGhee answered and began gathering his equipment.

"Morgan, you guys keep us posted on what's going on in that truck." Hotch added to the instructions that Gibbs had given the two.

"We will and you guys be careful, we don't know that this thing is coming in on the truck, it could be hand delivered."

Hotch just nodded sternly. "Emily you Reid and Tony will be canvassing the parking lot outside the ER, look for anyone who matches the profile we've given, again be careful this guy has nothing to lose"

Emily was already headed to the elevator. "Yep"

He looked at Kate who was holstering her weapon, "you ready for this?"

She nodded her eyes never leaving his assuring him that she was, that she was nervous but ready.

Gibbs didn't miss the long distance communication between his Caitlin and the dark headed special agent. He didn't have to be one of those fancy mind readers to see that there was chemistry going on between the two of them. He ought to know what that look meant, it was the same way he used to look at Jenny, now director Shepherd. "Ok let's go we are wasting time." As he walked past Kate he gave her a warning look, she read it and ducked her head.

The three of them headed over to the hospital; keeping a constant communication with the other members of the combined teams. So far they'd had no luck finding the source of how the explosive device was getting into the hospital. Kate, Hotch, and Gibbs entered the ER through the front doors and split up, Kate and Hotch walking around the waiting area and Gibbs going over to speak quietly with the middle aged woman sitting behind the glass window at check in. They had made the decision not to evacuate the hospital because they wanted to catch the guy when he delivered it and he would know something was up.

They had been there a couple of hours when a man dressed in florist delivery uniform walked in the front door. Kate caught Hotch's eye from across the room and nodded slightly, she radioed to Gibbs that they had a suspect entering the ER and they were approaching him for questioning.

Kate and Hotch sidled up to the guy on each side and Hotch flipped open his badge and directed the guy to the outside of the building. They reached the parking lot, the guy was clueless and Hotch was not convinced that he was their UNSUB but they had to be sure. Kate tried to radio Gibbs again and still got no answer. "I'm going to go find him." She said with a little frustration.

Kate hadn't quite gotten to the front of the building when it exploded.

Hotch watched as she was thrown in the air and back towards where he and the delivery man were standing. Things were moving in slow motion, he ran to where Kate had landed and knelt down next to her. He knew that other people were gathering around him and he thought that one of the voices speaking to him was Emily. But Hotch couldn't understand what they were saying. He just knew that Kate was bleeding and that he had to stop it somehow. He pressed his hand against her abdomen; the wound wasn't as bad as it looked originally but bad enough.

He stroked her hair leaning over until he was right above her face, "Katie you cannot leave me! Do you understand? You have to be strong; I know that you are, so now you have to fight. Do you hear me?"

He had shut his eyes trying to hold the tears back so when he felt a vibration under his hand his eyes popped back open in surprise.

"I think you own me a steak dinner for getting me blown up." She laughed weakly at him.

Hotch smiled at this "You think do you? Well I might even throw in a movie if you're really good for the doctors. For some reason I have a feeling that you can be a very frustrating patient." He laced his fingers through hers.

Suddenly her eyes grew very large and Hotch watched the panic come over her. "Where's Gibbs I was headed in after him?! He was in the ER! Oh Aaron he has to be ok!"

"It's ok, I'm right here, and I'm fine." A gruff voice behind him said.

Gibbs knelt down next to Hotch "its' ok Caitlin the doctors are here to take care of you now."

"Don't worry Katie; we're going to find this guy. I promise!" Hotch gently squeezed her small hand in his.

Gibbs took in the whole thing, he heard him call her Katie and the things that he'd said to her about fighting and not leaving him. He knew that there was more going on here than even the two of them realized. He and Kate were going to have a talk as soon as she was well.

Hotch wearily walked into the hospital, he knew that visiting hours were over but he had to see her. Even if she was sleeping just needed to see her with his own two eyes and know that she really was ok. He was hoping that his FBI badge would get him past the night nurse on duty. It wasn't as easy as he had thought but eventually she let him go in.

He wasn't prepared for the emotions that coursed through his body when he saw her laying there. She looked so small and frail, so not like she had just that morning when they were strapping on weapons at NCIS.

"Hey." A small voice came from the bed.

"Hey, I'm sorry I didn't mean to wake you. I just want to make sure you are alright."

"It's ok you didn't wake me, I've been laying here in the dark so that the dragon night nurse will leave me alone."

Hotch chuckled softly, "I knew you would be a stubborn patient." He laughed out loud at the "humph" that came from the bed.

"So did you get the guy?" Kate pushed herself up in the bed grimacing in discomfort.

Hotch moved to help her to a more reclined position, "yeah we got him, Morgan and McGhee pulled in right after the explosion and saw a guy in scrubs running from the hospital. They thought it odd that a hospital employee would be fleeing from a trauma, so the caught up to him and to make a long story short found explosive residue on his clothes and hands. Once we checked him out we found all kinds of goodies at his residence."

He saw her visibly relax as he recounted the events in catching the hospital bomber. "You shouldn't be worrying about the case right now; you should just be focused on getting better."

"I'm really fine, I got thirteen stitches and some glue in the cuts on my face but the doctors say I can go home day after tomorrow."

They heard a commotion coming from out in the hall, but before Hotch could move to check out what was going on the door to Kate's room opened and Gibbs walked in followed closely by the dragon night nurse.

Gibbs looked at Hotch and then walked right past him to stand next to Kate's bed; the nurse just threw her hands in the air and walked back out the door muttering something under her breath about FBI and surgeons being just alike.

"Gibbs what did you do to the dragon night nurse?" Kate asked with a giggle.

He ignored her question asking one of his own. "How do you feel Caitlin?"

"I'm fine really Gibbs."

Hotch cleared his throat reminding them that he was still in the room, "Um I'm going to head home Kate I will uh talk to you later." He reached down and squeezed her hand.

"Ok, thanks for stopping by Agent Hotchner" She had a smirk on her face as she called him by his professional name.