AN: So I do have something in the works for Everywhere I Go, but I wanted to write this short fic, and a few others, first.

Summary: The five things Charlie didn't want his older brother to know and the one time Don found out Charlie isn't the naive, clumsy younger brother he thought he was.

Colby

The FBI field office is dimly lit and vacant as Agent Granger's hulking frame moves slowly down the hall. It's nearing 1am in the morning, making him the only agent on the floor, and possibly in the entire building, though he's definitely not the only one loosing sleep over their last case.

The week long case had just wrapped up yesterday on an extremely sour note. It was without a doubt one of the more difficult cases for the entire FBI branch. One the bright side, they just busted an enormous human trafficking ring. Unfortunately, the ring specialized in preadolescence and adolescent boys and girls. When the walls begun closing in the leaders of the ring decided to cut their loses, they were just beginning to execute the remaining children when FBI and SWAT arrived. Majority of the kids were saved, the problem is that five kids were killed, and the unknown number who were sold before anyone knew about the operation. It doesn't sit well with any of the agents on the case.

Colby, personally, tends to head to the shooting range to let off steam when he can't sleep. The FBI has a well loved shooting rang in the basement, but it's always locked at 12am. Luckily, Don's a seasoned agent who knows the demands of the job. He leaves a key hidden in the office, only his team knows the location and, for security, he moves it once a week. The larger agent has already made his way to Don's desk, grabbed the key, and begun the descent to the shooting range.

If it wasn't for Colby being a frequent visitor, he would never be able to navigate the narrow hall in the pitch blackness of the FBI's basement. Despite his knowledge of the layout of the basement, he's glad his sleep addled brain doesn't need to do any extra work thanks to the lights being on in the shooting range. Colby approaches the door, finding it locked as usual, despite the lights begin on and the the distinct sounds of someone practicing. As quietly as possible, Colby unlocks the door, enters, then re-locks it.

The shooting range is made up of ten stalls heading from the entrance to the other side of the room. Across from the entrance, on the other side of the room, it the small armory which only contains small firearms for practice. A resounding bang bang bang fills the room as the mystery shooter spends the last of his or her bullets. Colby contemplates for a moment. The mystery shooter is four sections away from the door meaning Colby could walk by to see who it is. The agent normally keeps his curiosity in check, but he can count everyone who has a key to the range on one hand so his interest is piqued. Instead of indulging his curiosity fully, Colby settles on the section two spots away from the other agent instead, close enough to see their shooting, but far enough to give them privacy.

Once Colby situates himself in the sectional, he pulls out his off duty piece while keeping a close eye on the other person's shooting. The mystery shooter has their target placed at the far enough away to be impressive, but close enough to not be a prodigy. While Colby isn't close enough to see everything, he can see the fairly tight grouping in the other person's shots and the accuracy. He tries to shake off the remaining curiosity and begins setting his own target to take out his frustrations on.

Nearly ten minutes later, the large agent pauses in his steady wave of shots, two targets later, at the lack of shooting coming from the mysterious shooter. He hears the rustling of what sounds like a bag and the distinct noise of someone taking apart their gun. After a quick internal monologue, Colby decides to complement the other on their aim.

He steps out of own stall just as quick footsteps head towards him. Neither has time to register how close the other is when the, definitely smaller and male, other shooter walks into Colby's chest. The larger agent looks down and grabs the smaller person's arm as they stumble and try to regain their footing. With their face cast down, all Colby can see is the mass of curly brown hair. A million thoughts race through his mind, but there's only one person he knows with a head of hair like that. Colby's eyes widen as large brown eyes looking up at him in shock.

"Colby, what are you doing here?!"

The larger man stares for a moment trying to wrap his head around the situation. Charlie, Don's genius little brother Charlie, is hanging out in the shooting range at 1am,with a gun in his back pack, dressed in jeans and a t-shirt, and judging by the pitch of his voice doesn't want anyone to know. The silence lasts longer than a few seconds, Colby is sleep deprived after all and in shock, if Charlie's awkward shuffling is anything to go by.

"Look just don-"

"How did you learn to shoot like that? Did Don teach you?"

"No, it was a requirement for one of the consultant jobs I did. It's not hard either it's just math."

"A requirement? You're just a math professor, why would you need to know how to shoot?"

"It was just a precaution in case the bodyguards weren't around." Colby nods his head in understanding, knowing some aspects, if not most, about Charlie's other consultant work are confidential and there's always a risk of danger. "Just please, please don't tell Don. He'll freak out if he finds out I own a gun let alone know how to use it. Then he'll demand I tell him the agency I worked at who taught me."

Colby stares into the pleading brown eyes as he considers his options. He could tell Don, but Don probably will freak out. The lead agent made Charlie promise years ago to come to him if he needed to learn how to shoot. The elder brother didn't trust anyone else to teach his little brother how to handle a gun. In Don's mind Charlie will always be one part clumsy and two parts distracted kid who can only be trusted with the basics of their own safety. On the other hand, if he doesn't tell Don and the man somehow finds out there would be hell to pay.

With his mind made up, the agent opens his mouth to form the words no, but as Colby looks into pleading brown eyes an, "Okay" comes out instead.

"Okay? Really, you won't tell Don?"

"No I won't, but if he asks or finds out I won't deny it either."

The shorter man beams and hitches his bag back on his shoulder. "Thanks Colby."

"So how do you have the key to this place anyway?" The two begin walking out of the range, locking the door and turning off the lights as they go.

"Oh, it's actually a funny story."

AN: The end for part one. Two and possibly three will be posted this week. I'm going to do Amita, Megan, David and Alan (not in that order). Please review and feel free to leave some ideas as to what Charlie doesn't want Don to know.