*Tag to Nine Lives but you don't need to have seen that to understand this.
I've tried to write it so it doesn't give away what actually happens in the episode.*

NCIS Squad Room. Tony,Ziva and Tim are eating Chinese and watching the news.

"A power struggle is already underway among those eager to fill Azari's shoes. Two of Azari's lieutenants were gunned down in south east DC..." Tony points the remote and turns off the plasma then continues eating. "Well, that's that then. Bad guy dead more bad guys taking over. Case closed" he says through a mouthful of food.
"It is how the world works Tony."
"Right you are Ziva. It is the circle of life...the path unwinding..." He hums a little. "Or should that be circle of death?"
"Huh?"
"The Lion King."
"Huh?"
"It's a movie Officer David."
"I should have guessed."
"Do you think Fornell will come out of this O.K.?"
"Of course he will probie."
"I dunno Tony. The FBI does like having its scapegoats. Maybe he'll be made an example of."
"Don't be silly McAnxious. Fornell is like Gibbs. He will never leave unless he wants to. They need him and even if they did consider removing or punishing him in some way I'm sure Fornell knows where all the bodies are buried. No doubt he won't be shy in reminding his Director of that fact."
McGee grins. "So maybe we won't have to put up with Agent Sacks taking over after all."
Tony glares at him. "Don't even joke about it. That is so not funny."
"Did Agent Fornell used to be in covert operations?"
"No."
"Was the FBI Director?"
"No. What are you getting at Ziva?"
"I just wished to know how Agent Fornell's knowledge of where some bodies are buried could influence the Director not to punish him. I assumed it had something to do with deaths caused in secret operations."
The guys chuckle. "I was not referring to actual bodies Ziva. Knowing where the bodies are buried is just an expression. Like 'having a skeleton in the closet'..."
"Is that like an elephant in the room?" she interrupts.
"No. It means Fornell will know all about any mistakes or embarrassing incidents in the Director's past and will use them if needed as leverage to get what he wants."
"Like dirty pictures."
DiNozzo's eyebrows raise in astonishment. "You don't know buried bodies but you do know dirty pictures?" he asks grinning.
"It is a valid technique to compromise intelligence operatives. I have used it many times."
"Do tell Officer David."
As she begins to recount a previous mission she also wonders what Fornell could have on the FBI Director and makes a mental note to find out. That information could come in useful one day. Tony starts to sing "The circle of life..." and promptly spills the remains of his meal over his suit.
"Damn!" He stands and brushes the food off and into the bin. "I'm out of here." He grabs his stuff and heads for the elevator as his colleagues call out good night. McGee and David wisely refrain from laughing until the elevator doors close.
"I wonder if Tony knows where Gibbs' bodies are buried?"
"Why?"
"It would explain a lot" she replies with a mysterious smile.
"Like what?" McGee responds not sure he really wants to know the answer.
"Yes Officer David like what?" a quiet voice questions from behind her.
"Gibbs! We were just...that is..." Gibbs just stares at her.
"Heading home" chimes in McGee grabbing his gear and crossing to Ziva's desk.
"Exactly! Good night Gibbs." She quickly grabs her things and they head to the elevator.
"Night Boss." As the elevator doors close they both let out sighs of relief.
Back at his desk Gibbs lips twitch in what might be the beginning of a smile. The case was closed, the meeting with the FBI Director went well and Fornell would be O.K. Sometimes knowing where the bodies are buried could be a very useful thing indeed.