It was a quiet Monday morning at work. Kensi was reading a magazine at her desk when Sam and Callen came in, bickering as usual.

"When I tell you to come at 8:00 you come at 8:00. Not at 7:50 banging on my door," she heard Sam say.

"It was 8:00 on my watch," Callen shot back, "And you never said we were going by your watch so…" He trailed off and walked to his desk.

"Whatever, G," Sam said, dropping his stuff on his desk.

"Morning Kensi," Callen greeted. She put her magazine down.

"Morning Callen. And Sam," she said, "Bickering like a married couple again huh?" She smirked.

"You know what Kensi? Got back to your magazine," Sam said, frustrated. She laughed. Then Deeks sauntered in, 5 minutes late as usual.

"Mornin' everyone," he called.

"Someone's cheerful today," Callen grumbled.

"You all should be." Hetty's voice wafted into the hacienda.

"Now, today is an important day. We are starting something new."

"We?"

"Yep. We." Nate appeared at Hetty's side.

"Today is partner switch up day!" Nate said. The team exchanged glances.

"Partner."

"Switch."

"Up."

"Day?" Kensi finished. Nate nodded.

"It is proven that to have an efficient team, you need to switch things up so now you'll switch partners!" Hetty nodded.

"Ms. Blye and Mr. Callen. Mr. Deeks and Mr. Hanna." Kensi grinned at Callen.

"Nice." Sam's jaw dropped down to the ground.

"You expect me to work with him?!" Sam asked, incredulously, "I can't work with him!"

"Wow. He is still here. Hi. How are you doing? That's offensive," Deeks stated.

"It can't be that bad Sam," Callen said, patting his partner's back, "You'll survive."

"Wow," Deeks said, "That's nice." Kensi opened her mouth to say something when a piercing whistle echoed around them.

"Case on deck!" Eric called.

"Well, have fun with your new partners," Hetty said, "Don't kill each other."