A/N: Thanks for all reviews. Sorry this update took a while. From Monday I am hoping to do one episdoe a week. Please review and tell me if you liked this crossover and if you would like more.

Thank you and enjoy part 3 of. 'Swimming With The Fishes.'

Swimming With The Fishes

Part Three of Three

"Eric, what have we got on Ellie Perreira?" Callen asked urgently as he walked in to OPS. Also entering was Sam, Nate Kensi, Deeks and the five agents for Washington. Eric put a picture of Ellie Perriera on the board.
"This is Ellie Perreira, 20 years old and already has a criminal record that includes theft, assault and arson. She moved out from her father when she was 17 but they have kept in close contact."
"Thanks Eric." Callen said.
"So we have a dead marine who knew of a terrorist attack in Los Angeles that two of his colleagues were involved in. Then he is shot and killer, maybe by one of his marine colleagues before his daughter is abducted. Then one of the daughters guards has a meeting with David Johnson." Sam thought out loud.
"Which means that the two marines and the two guards are probably working together." Kensi said.
"But that still leaves the questions of why Ellie Perreira was abducted? And why these marines and police officers are trying to commit a terrorist attack?" Ziva said.
"You missed out, where this attack will happen? When it will happen? How it will happen? and Is there anyone else involved?" Tony said. "Gotta love Los Angeles."
"Alright, our main priority is this impending attack but also need to find Ellie Perreira." Callen started, before Gibbs interrupted.
"If Perreira was abducted by the terrorists then it is likely that wherever she is at least some of the terrorists will be."
"Alright. Gibbs, if you and your team try and find Ellie Perriera, we will try and find the two marines who are trying to terrorise Los Angeles."
"We're on it" Gibbs said, leading his team out of the OPS centre leaving the LA team inside.
"So how exactly are we going to find these two marines?" Deeks asked.
"Simple, when you are as good as the rest of us Deeks you will learn to never lose a suspect." Callen said, smirking at Deeks.
"And what about the two suspects you had at the casino earlier?" Deeks countered, thinking he had won the argument.
"Eric, pull it up." Callen replied whilst still smiling at Deeks. Eric put up a picture of a map that covered a small section of LA. In middle of the map was two dots, one red on blue.
"Looks like they're both in the same location still, it's a warehouse in downtown LA."
"What are you still doing here Mr Callen, go get them and stop this attack" Hetty said, having somehow managed to sneak in to OPS without anyone noticing.
"Alright, let's go" Callen said, leading Sam, Kensi and Deeks out of OPS.

The Washington team sat around their new, temporary squad room as they discussed how they would find Ellie Perreira.
"Alright, so we know about Ellie Perreira, now we need to find her." Gibbs said as they all sat down.
"We don't even know why she was abducted though, I mean it can't be leverage because her dad is dead." Tony said.
"Maybe because the marines are angry that Perreira was informing the police on the attack, so this is revenge." Fuscoe said.
"But they've already killed Perreira, isn't that revenge?" McGee asked.
"Alright, how about this." Ziva started. "Maybe Ellie Perreira wasn't abducted, maybe she left that house willingly with the two LAPD officers."
"But why would she leave willingly? And there were signs of a struggle" McGee said.
"It is easy to fake a struggle McGee. But do we really think she went willingly with the people who probably killed her father?" Gibbs questioned.
"Maybe she was in on it from the beginning" Ziva said, as the team thought about what she had said for a few seconds.

"Hey Abby" Eric said as the forensic specialist from Washington appeared on the bog screen.
"Hi Eric, how are you doing?" Abby asked.
"Fine, how about you" Eric responded.
"I'm OK, as long as this terrorist group doesn't blow up Los Angeles."
"Yeah that wouldn't be good."
"Eric I would like you to meet our Medical Examiner Ducky Mallard and his assistant Jimmy Palmer." Abby introduced as they both appeared on the screen.
"Hi Dr Mallard and Dr Palmer." Eric said.
"Please, call me Ducky everyone else does."
"And you can call me Jimmy." Palmer and Ducky explained.
"Ok. Did you get anything from the bodies or the evidence?" Eric asked all three of them.
"Yes, we found something interesting on the body. It appears the deceased was drugged just just a few minutes before he was killed, possibly to hinder his chance of escape." Ducky explained.
"And I found a finger print of the victim's clothing, it might have come from the killer." Abby said. "I am running the print through AFIS now."
"OK, I will tell the rest of the team that." Eric said. "Nice to see you again Abby. Nice to meet you Ducky, and you too Jimmy." Eric signed off the chat, before turning to Nate. "What did you make of that?"
"It's unlikely that a marine would drug a victim, it isn't what they would do. They would feel like they wouldn't need to do it in order to kill their target."
"So we think it was someone else, another member of the group maybe?" Eric asked.
"That would be my opinion, I'll call Callen and Agent Gibbs to tell them both." At that moment Eric's computer beeped.
"I found her!" Eric shouted triumphantly.
"Who?" Nate asked.
"Ellie Perreira, she switched her cellphone on. That's weird, she is at the same place as David Johnson and are LAPD officer."
"Which means it was them who probably abducted her, I'll tell Gibbs, he will want to meet Callen and the rest there." Nate said, picking up his phone once more.

"Alright thanks Nate." Callen put the phone down as him and Sam drove to the warehouse.
"What was that about?" Sam asked him.
"Ellie Perreira is at the warehouse, Gibbs and his team are going to meet us there. They're five minutes behind us." Callen explained.
"Alright, do we wait for them?" Sam questioned.
"Yeah, we don't know how many of them are in there."
"OK"
Gibbs skidded in to a makeshift car park adjacent to the warehouse. He was followed by Ziva who was in a second car. Gibbs and Tony got out of the first car, whereas Ziva, McGee and Fuscoe got out of the second. They headed over to Callen's team.
"What are we up against?" Gibbs asked.
"We know that there are at least two terrorists inside, and Ellie Perreira. But there're probably more."
"Alright, my team will take the back, you take the front." Gibbs instructed. All nine agents jogged across the road and headed towards the building. Gibbs lead his five agents round the side. Callen, Sam, Kensi and Deeks crouched next to the door, Deeks pointed a shotgun towards the door, waiting to blow it in. "Callen, we're in position." Gibbs said. "Alright, 3,2,1. Go!" Callen shouted.
Deeks blew the door open, allowing the three other agents in the door before following him in. At the back the five agents advanced in to the building.
"NCIS!"
"Federal Agents!" Came the shouts. All agents advance towards a wide room in the middle of the building. Inside were six men, gathered around something.
"NCIS!" Tony shouted. The men turned and instinctively pulled out automatic weapons and began firing. Sam took out one of them with two shots to the chest before Fuscoe fired in to another's shoulder, before Ziva finished him off. Gibbs took out another, as did Callen. Leaving two terrorists to go. One of the marines was still left, it was James Henderson who was moving towards the agents firing as many bullets as he could. Kensi put two bullets in to him, killing him instantly. The agents all moved towards the middle, when the other marine, stood up with a gun in his hand. All nine agents shot bullets in to him, almost splitting David Johnson in half. The agents moved towards the dead marine, when Deeks saw something next to the body.
"Bomb!" He shouted, as he saw the ticking timer on the object. All agents reacted instinctively, turning and sprinting towards any exit they could. Callen, Gibbs, Ziva, Sam and McGee ran out of the front door as the building exploded behind them. They all jumped and landed heavily on the floor. They kept their heads down until the explosion subsided. Once it had they all got up.
"Where are the others?" McGee said, panicking. At that moment two agents couched as they stumbled round the corner. McGee saw that it was Kensi and Deeks. "Where are Tony and Fuscoe?" But McGee's panic lowered when he heard more couching and spluttering as his two colleagues half crawled half stumbled around the corner of the collapsing building. The realisation that all of them were safe brought eight of the agents to smiles, all except Callen.
"Where is Ellie Perreira?" He asked.

"Abby, twice in one day. What have you got?" Eric said, smiling at the forensic scientist who was on the screen.
"Eric I matched the print that was on the clothes." Abby said.
"Whose was it?"
"Ellie Perreira"

"Thanks Eric." Callen said. He put his phone down as the paramedic finished stitching his bleeding arm. He went over to Sam. "It looks like Ellie Perreira killed her father for whatever reason. Have we found her yet?" Callen asked.
"Gibbs, Ziva and McGee are scouring the building for her body." Sam explained. At that moment Gibbs appeared alongside the two agents.
"We found a female body in the wreckage, probably Perreira's. It looks like she was part of the terrorist cell." Gibbs said.
"And she killed her father. Nice girl." Callen said.
"At least that wraps this case up." Sam said. "And we stopped a terrorist cell blowing up Los Angeles."
"All in a days work." Callen said.

The waves spilled on to the beach peacefully and calmly. The beach was crowded, yet quiet. Gibbs slid down on to the bench alongside Callen, the same bench they had sat on 2 years ago when Gibbs had last been in Los Angeles.
"Well that was an interesting couple of days." Callen said.
"Always is when terrorist tries to blow up a city." Gibbs replied.
"You have an interesting team Gibbs, it was good to work with them."
"You too Callen. They seem to have stopped you getting shot all the time" Gibbs said.
"It's funny Gibbs, I always seem to get shot when your in town."

The bar was quiet as the four agents entered and sat at a table by the window.
Tony and Ziva on one side, Kensi and Deeks on the other.
"Hell of a day" Tony said. "Could do with some drinks"
"Hey, Johnny!" Deeks shouted, calling one of waiters over. "Four beers please."
"Anything for you Marty" The enthusiastic Mexican said.
"Deeks I swear you know everyone in LA" Kensi said.
"Not everyone, just the important people" Deeks replied as four beers were placed on the table.
"So when are you two heading back to Washington?" Kensi asked Tony and Ziva.
"Tomorrow morning" Tony answered, flashing a smile at Kensi. Kensi laughed.
"Maybe you will come back soon?" Kensi said, more to Tony than Ziva. Tony laughed before getting looks from Deeks and Ziva. As Tony and Kensi continued their conversation Deeks whispered to Ziva.
"So, when are you coming back to LA?" Ziva laughed before leaning closer to Deeks and saying.
"Now I know what Callen warned me about."

"McGee to your right!" Eric shouted.
"Got him" McGee replied. "Nate, behind you"
"He's down" Nate said. The three of them sat in OPS, playing Call Of Duty on the big screen.
"And we win!'" Eric shouted triumphantly as the screen faded. Suddenly Hetty's face appeared on the screen, right in the face of the three men. They all jumped back, shocked. Eric fell off his chair.

Both men grunted as the blocked each other's punches. The young agent from Washington swung a right hook at the Navy Seal but that was met by a kick. As Sam's foot made contact with the armour on Fuscoe's chest. This armour beeped, indicating a point to Sam. Fuscoe reacted by pushing his knee up in Sam's chest and then swinging his right hand in to the soft, yet strong armour. The loud, long beep indicated the fight was over. Both agents stood up straight, gasping and breathing heavily.
"Where did you learn to fight like that?" Sam asked Fuscoe.
"Not in Seals training that's for sure." Fuscoe smiled at Sam. Sam smiled back.
"If only Callen could fight like that."