During the car ride, Mac took the time to call Harm and let him know that she would be late coming home that night.

"Hey, Mac, I was just about to call you," Harm's voice came over the line.

"Uh oh, that doesn't sound good," Mac was amused.

"I got dragged into this thing with NCIS…"

"Wait, they called you in too?"

"What do you mean, me too?"

"Hetty approached me," Mac knew she didn't have to explain further.

"Okay then. Well, they think it might be someone on the inside, so I'm all over that with Callen and Hanna."

"What about the kids?" Mac wondered.

"I'll call mom," Harm promised.

"Samantha has her martial arts class and Liam has soccer," Mac reminded him.

"I'll let Mom know," Harm reassured.

"Remind them to not let the twins out of sight because I still have that stalker, you know," she reminded him.

"Did you go by the police station this morning?" Harm wondered.

"Yeah, they are looking into it, but I don't know. I might have called the detective a moron," she admitted.

"I'm sure that will help, Mac," Harm was being sarcastic.

"Well, if the shoe fits," Mac mumbled.

"I'll make some calls and have someone make this a priority," Harm promised.

Mac smiled. "This is why I love you."

"You better. Okay, I have to go. Be careful, Mac," Harm warned.

"Yeah, you too. Bye."

"Bye."

Mac hung up the phone.

"So, you have a stalker?" Deeks wondered, looking at her curiously in the mirror.

"My life is a tabloid," Mac chuckled.

"What can you tell us about this Rokol?" Kenzie wondered.

"Well, he's charming and dangerous. One moment he seems normal, the next minute he's slamming some guy's head into a car. We used him as an informant when I worked anti-terrorism, but it's never easy to know who's side he's on," Mac warned. "Usually he'll give a few hints if he's in the mood. Usually followed by asking a favor. If we hold our part of the deal he'll give up anything you want as long as he gains something from it."

"Seems like a nice guy," Deeks stopped the car.

"What should we expect in there?" Kenzie wanted to know.

"A polite Russian diplomat," Mac opened the door and got out. "Stay in the back. He doesn't trust easily and we don't want to spook him."

San Diego

Harm made a call to the chief of police. An old friend of his. He promised to look into the case with Mac's stalker and get back to Harm. Harm put his phone down.

"How much security does the harbor have?" Callen wondered as he looked up, on the huge carrier.

"A lot. It won't be easy to get in with explosives," Harm reasoned. "Every vehicle is checked, there are armed soldiers everywhere, especially now with the threat."

Hanna looked around. "So we should assume that there's a plane or a boat looking to come close enough to one of our vessels out at sea. Meaning we shouldn't be worried about the ships in dock, but focus on the ships out at sea."

"That's a lot of ships," Harm motioned for them to follow him.

"Our source tells us that it's specifically carrier ships," Callen said.

Harm took them inside a building. "Lieutenant, can you give us all the carriers at sea on a screen?"

"Yes, sir," the Lieutenant motioned for them to follow him. He walked into an office and walked up to a huge screen. "Let's see," he took a tablet and moved his fingers around and a map appeared. "Now, the yellow dots are carrier ships."

"There are five carriers at sea," Harm pointed to a dot. "The Truman is in the Arabian Sea area, so she's the one to likely be targeted."

"Not if there has been smuggled a bomb on board," Hanna pointed out. "Then it could be any ship."

"Lieutenant, I need every one of the crews on every carrier ship at sea checked. Find out who could likely be a terrorist," Harm ordered.

"Captain, that's thousands of men and women," the Lieutenant was doubtful.

"Anyone with links to the Russian environment is a suspect. Gather enough people and get started," Harm ordered.

"Yes, sir," the Lieutenant said and snapped to attention before leaving them.

"We need better intel," Callen was frustrated. "We have to find a link between terror organizations and someone in the crew of those ships."

"We go back to our source, and then hopefully the Colonel finds something," Hanna crossed his arms and stared at the screen. "Before one of the ships blow up."

Los Angeles

The place seemed like the ordinary old rundown dump of a bar. Mac stepped carefully into the room, looking around. There was no one there.

"It's empty," Deeks wandered inside and looked around. "This is a dump. Who'd run a place like this?"

"Who are you?"

They all turned towards the voice. A short, greyhaired man, probably in his sixties, wearing a suit studied them from across the room.

"Who? Me?" Deek's pointed to Mac. "I'm with her."

"Hello, Rokol," Mac said.

"You bring reinforcements?" the man stepped closer to them. "You don't trust me, Sarah?"

"Not really, no," she motioned for Kenzie and Deeks. "Agent Deeks and Blye with NCIS."

Rokol nodded. "You look lovely Sarah. Still happily married?"

"I am," Mac confirmed.

"And how is captain Rabb?" Rokol wondered.

"He's good," Mac said.

"You see, Agent Blye and Deeks, Sarah and I go far back," Rokol smiled. "So what can I do for you, Sarah?"

"We suspect that terror attacks against American Navy ships are in the planning," Mac said.

"Attacks, you say," Rokol shrugged. "Why would the Russians be involved?"

"Why wouldn't they?" Kenzie wondered.

Rokol smiled. "I like her, she's feisty."

"What about me?" Deeks wondered.

"Too much hair," Rokol shrugged. "You look like a skater, not an Agent."

"So, do you know anything?" Mac wondered.

"I know all kinds of things, Sarah. You know that," Rokol smiled and sat down on a bar stool.

"Do you know anything about explosives?" Mac continued.

"Why do you suspect explosives?" Rokol wanted to know. "There are long-range missiles, gas and.. powders…" he let it hang.

Mac suddenly realized that he was suggesting that explosives weren't a factor. "You're saying that explosives aren't a factor?"

"My son got his diplomatic immunity revoked a year ago, because of some unfortunate run-ins with the law," Rokol suddenly said.

"You mean he raped a girl," Deeks suggested.

Rokol looked at him. "You've done your homework," he shrugged. "It was a misunderstanding."

"And now you want his diplomatic immunity back so that he can come back to the US?" Mac suggested. "We can make that happen."

"Colonel?" Kenzie questioned and she and Deeks shared looks.

"I can talk with someone at state," Mac promised. "I can call right now."

"You do that and I'll wait," Rokol said.

Mac picked up her phone and dialed a familiar number. "This is Colonel Mackenzie. I need to talk to Hazel, now. I don't care if he's in a meeting, get him to the phone now." She stepped outside and waited patiently before an annoyed voice came over the line. "Mac, this better be good?"

On route to Los Angeles

Harm's phone buzzed so he picked it up and saw that his wife was calling.

"Mac?"

"I haven't gotten all the details yet but I don't think it's explosives. I think it is some sort of gas or powder."

"Are you sure?"

"Yes. Probably something that, if spread around the ship, will kill a lot of sailors," Mac warned.

"Damn it!" Harm said loudly.

"I need to chat with Rokol again, but Harm…"

"Yeah, I know Mac, I'll contact the ships," he let out a sigh. "Bye."

"Bye."

Harm turned to Hanna and Callen. "We better hurry up. Mac thinks it some sort of gas or powder that will be spread on a ship, or several ships."

Callen and Hanna looked at each other. "Farah!" they said in unison and Callen stepped on the gas.

"We've suspected that a terror cell has been buying up large portions of sodium cyanide. They are under surveillance," Hanna explained. "We need to talk to the leader, Hamid Farah."

"If sodium cyanide is spread around a ship…" Harm let it hang.

"Catastrophe," Callen suggested.

"I better get the message out to the ships," Harm reached for his phone.

"Hell, if the words spread around the ships the terrorist will most likely panic and spread it," Callen warned.

"They can do an exercise and do the search then. We have them all the time," Harm put his phone to his ear. "Get me the Captain on the Hoover, the Truman, the Enterprise, the Moore and the Challenger now," he ordered over the line.

Los Angeles

Mac walked back into the bar.

"Your son will have his diplomatic immunity back," she informed Rokol. "So?"

"There was a shipment of sodium cyanide delivered for Robert Smirnoff about three months ago," Rokol said.

Kenzie reached for her phone. "I need everything you can find on a Robert Smirnoff."

"Are you involved with this?" Mac wondered.

Rokol shook his head. "Nah, I only pick up the news here and there."

"If anyone knew that you knew about this…"

"They'd kill me in an instant, Sarah. I know too much," Rokol hesitated. "The only thing keeping me alive is that I know so much about both sides."

"Who's your source within the Navy, Rokol?" Mac wanted to know.

Rokol shook his head. "No, Sarah. I've said enough."

"We'll find out anyway," Mac tried.

Rokol laughed. "Then there will be a new source. People do anything if you offer enough money, Sarah. Don't be naive," he stood. "Bye."

"If words that we are on the terrorist tail gets out, I will get your immunity revoked," Mac warned.

"I'm not that stupid," Rokol said as he strode past them.

Mac watched him go.

"You're just letting him walk away?" Deeks wondered.

"He has immunity and we might need him again," Mac turned to leave. "Nice job figuring out about his son. You're not just a cute face, are you?"

Deeks chuckled. "Ask Kenzie."

"He has his moments," Kenzie said. "We better head back to the office and see what Nell and Eric have found out."