A/N: Short cross over with Navy NCIS, but only for this chapter.

"Can I help you Colonel?" One of the guards at NCIS asked.

"We're here to see Agent Gibbs." Mac replied.

"Does he know you're coming Colonel ...?"

"Mackenzie and this is Petty Officer Coates." Mac supplied. "Yes he does know we're coming."

"I'll just let him know you're here ma'am."

"Colonel Mackenzie." Gibbs said as he came down to see greet her. "Jethro Gibbs." They shook hands.

"This is my aid Petty Officer Coates." Mac introduced Jen.

"Petty Officer. If you'll come with me." Gibbs led them to his area of the office. "This is Agent Dinozzio and Agent Todd."

"Hello." Kate said.

"Colonel Mackenzie and Petty Officer Coates." Gibbs introduced them.

"Hi." Tony said with his normal flirty tone.

"Ignore him." Kate suggested.

"Kate I'm hurt." Tony said in mock pain.

"Don't worry we have a policy for men who step over the boundaries." Mac said. "Right Jen?"

"Yes ma'am. Handcuff them to the fantail or each other or the nearest heavy object." Jen replied. "Then we don't tell our husband's because they tend to get jealous and want to do something about it."

"I like how you think." Kate smiled.

"Now the introductions are over, Agent Gibbs I'm going to need to see this evidence if you want the search warrant issued." Mac said.

"We have evidence that the drugs are being stored in the barracks. But we need to complete a locker inspection for every member of the platoon." Gibbs explained.

"Which is an invasion of privacy. I'm going to need more evidence to prove that the drugs are there." Mac corrected.

"How about two dead bodies?" Tony questioned.

"Dead bodies, no one mentioned dead bodies." Mac said.

"Come with us." Gibbs said and they all headed for the elevator. "Ducky." Gibbs said when they entered Ducky's realm.

"Jethro. I see you brought guests." Ducky said.

"Colonel Mackenzie, Petty Officer Coates. Dr Donald Mallard, Ducky."

"It's nice to meet you." Jen said.

"I wish it were under better circumstances." Ducky said. "This is Private Dwayne Hutton and Private George Jackson." Ducky introduced the dead bodies on the slabs.

Mac's face paled when she looked at the bodies.

"Do you have a bathroom?" She turned and ran out the door.

"And I thought Marines were supposed to have strong constitutions." Tony joked.

"With all due respect, shut the hell up." Jen said. "Her constitution is normal just fine, she just happens to be pregnant. If you'll excuse me someone should go and check on her." Jen turned and went in the direction Mac had.

"Nice one Dinozzio." Kate said. "Real smooth."

"We need her to give us the warrant." Gibbs said. "So like the Petty Officer said, shut the hell up."

"How was I supposed to know she was pregnant?" Tony protested.

"It's a little thing called having tact. I'm going to see if she needs some water or ginger beer and crackers." Kate said.

"Bring her up to Abby." Gibbs suggested.

"On it."

"Is she the same Mackenzie who got accidentally mixed up in that thing with Powell?" Ducky asked once Kate had left.

"Yes." Gibbs replied. "She married that Commander Rabb, the one who is a lawyer and a pilot."

"I've heard good things about her." Ducky replied.

"Me too. Let's take this to Abby." Gibbs said.

#

"Can I get you anything Colonel?" Kate asked. "A glass of water, ginger beer?"

"I'm fine now, thank you." Mac said.

"We'll go up to the lab. Probably easier on the stomach." Kate smiled.

"Good." Mac said.

"Petty Officer just ignore Dinozzio he maybe good at his job but he has the attitude of a fourteen year in heat."

"Yes ma'am." Jen replied.

"You don't need to call me ma'am, Kate's fine. Another little tip, don't call Gibbs sir, he hates it."

#

"Abby, Colonel Mackenzie, Petty Officer Coates." Gibbs introduced them.

"Abby's a great name." Mac said.

"Yours?" Abby questioned.

"My daughter's." Mac replied.

"Keep calling her Abi, she'll hate you if you call her Abigail all the time." Abby advised.

"We do anyway." Mac corrected. "I have a tendency to answering everyone calling me Mac rather than Sarah."

"Can we get back to the warrant?" Gibbs asked.

"Do you have anything to provide a reasonable suspicion that these drugs are in those barracks?" Mac asked.

"Abby?" Gibbs prompted.

"I ran tests on both our dead Marines blood. They both tested positive for a mix of cocaine and heroin and a substance I haven't been able to identify as of yet." Abby replied.

"So they went out and partied together, bought drugs from the same dealer, but what makes you think they are in the barracks?" Mac questioned.

"They've both been restricted to barracks for the last two weeks as punishment for getting into a fight."

"Jen." Mac prompted. Jen took a sheet of paper out of her bag and handed it to Mac. "Do you have a pen?" Abby handed her one. "Don't make me regret signing this." Mac signed her name with a flourish and handed it to Gibbs.

"Thank you Colonel." Gibbs said.

TBC