"Hey Tim, how's it going?" Calleigh asked as she walked into Trace.

"Oh hey Cal. I'm running the sand that was found in most of the bombs."

"Sand?" Calleigh questioned as he stepped aside to let her take a look at the microscope.

"Only two of the bombs were real the others were full of sand. One of those was the one H disarmed."

"I've run the hair and print I got from the underside of the bus, but they don't match anything on record."

"Did you compare it to the one Eric pulled off the end cap?" Speed asked.

"Yes, it was a match which proves he, whoever he is, built the pipe bombs and planted them."

"DNA result definitely confirmed we're looking for a man then."

"Yes."

"Eric is out trying to track down the components used to make the bomb. H gave him a list but he's still taking them all apart one at a time to see if he can gain more insight into who he is, his signature."

"I'm having the tape of the 911 call brought over for the AV lab to go over to see if they can pick up anything in the background or in his tone." Calleigh explain.

"What I want to know is how did they manage to rig eight school buses undetected?" Speed said.

"The company that runs the buses for the city keeps them all locked up at night in the same parking lot. There is a security guard who guards the front gate but..."

"Hop the fence at the back and no one is going to check." Speed finished.

"Tripp is getting a warrant. We're going to fingerprint all the bus drivers, everyone who has access." Calleigh told him.

"Good thinking." Speed smiled. "So how did it go last night?"

"Not well. I ended up crying on Alexx's shoulder for a few hours."

"If he hurt you..." Speed started.

"He didn't. We talked for a while and I did something I haven't quite decided if it was a good or a bad idea yet and I got scared so I ran."

"If you were having breakfast with him I guess you cleared up the misunderstanding?" Speed speculated.

"We were working on it when Horatio got the call."

"I'm here if you need me Cal."

"Thanks so about that sand..." Calleigh said changing the subject back to work.

"It's definitely not beach sand. It's from a quarry; I'll run analysis and work out where."

"Every bomb tells a story." Calleigh smiled.

"As does every grain of sand."

"Let's hope it leads us to our bad guy."

"Speed, Calleigh." Yelina said walking into trace.

"Yelina." Calleigh said.

"At least you're wearing your own clothes today." Yelina commented, the coldness in her voice apparent.

"You know what Yelina; I've had enough of it." Calleigh said.

"Enough of what?" Yelina tried to sound innocent.

"The cold hearted b#ch routine when I'm around. I've never done anything to except try to be nice to you. I know what your problem is and it's not my fault so stop blaming me for your insecurities and if it bothers you that much talk to Horatio."

"I don't know where you get off talking to me like that." Yelina said.

"I've been told that I have a case for making a claim about a hostile work environment."

"Calleigh." Speed said just as Calleigh's pager went off telling Tripp had got the warrant.

"So why don't we make both our lives easier, stay away from me unless we have the misfortune to be working the same case." Calleigh said. "Tim I'll see you later and let me know about the sand."

"Will do." Speed replied. Calleigh left to go and do her job.

"Did you hear what she said to me?" Yelina said.

"It's been a long time coming and you deserved it." Speed replied.

"You're siding with her?"

"This isn't about taking sides. Raymond's been dead for a while couple of years now, if anything was going to happen between you and Horatio it would have by now. So get over and move on and stop making Calleigh's life hell, she doesn't deserve it."

"You are siding with her. You're all a little in love with her aren't you?"

"Yelina, Calleigh is our friend; we care about what happens to her. Friends help each other, trust and respect each other. They also stand up for each other and by each other. Horatio is in the layout room, taking apart the bombs from this morning and doesn't want to be disturbed; I have work to do so I need you to leave now."

Yelina turned on her heel and left.

"Calleigh are you alright?" Tripp asked when she met him in the parking lot.

"I'll be fine when I can shoot off a few rounds." Calleigh replied.

"Just don't let me get in the way."

"I'll wait until I'm back at the range." Calleigh said.

"Horatio." Yelina said walking into the layout room where Horatio was busy looking at the bombs.

"Yelina is this important I'm in the middle of something." Horatio asked.

"You need to control your CSIs." Yelina stated.

"Why what happened?" Horatio looked up at her.

"Calleigh just yelled at me."

"What did you say to her to make her do that?" Horatio asked.

"She yells at me and you're asking what I said to her?" Yelina seemed a little stunned.

"Calleigh is a calm and reasonable woman, she wouldn't yell at someone without a reason." Horatio replied. "Or being provoked."

"I said it was good to see she was wearing her own clothes today."

"This was about my loaning her my jacket yesterday?" Horatio questioned. "I gave it to her because she was cold, she didn't want to take it but I insisted. End of story.

"Horatio..." Yelina started.

"I've been made aware that you've been hostile towards her for some time now. It needs to stop she is just trying to do her job and she can't do that if you're making her life difficult."

"I see Calleigh came complaining to you."

"Actually someone else brought it to my attention. Calleigh didn't want to discuss about it when I tried to talk to her yesterday. She said she would handle it her way and didn't want anyone else to interfere. I was trying to respect her decision, but it seems things have escalated."

"Horatio, you're siding with her in this." Yelina said.

"Yelina you're family and you'll always be my nephew's mother and my brother's wife, but Calleigh is my friend and I am her boss and I have a responsibility to make sure she works in a safe and secure environment that isn't hostile. Drop the attitude around her and the situation will sort itself out before she decides to file and official complaint."

"Horatio."

"Yelina, I need to get back to work I have a bomb maker who thinks planting pipe bombs on school buses is a good idea and I need to find him before this escalates."

"You're throwing me out?"

"I'm asking you to leave." Horatio rephrased. "I'll talk to you later."

Yelina huffed before turning and leaving.

TBC