A/N: The idea of 'bang bang' on the back of the card came from another fic that I read and liked the first couple chapters of. So I expanded on the idea. Also, this was going to be a long fic, but Charlie decided that he's in too much of a hurry, so there's probably only going to be a couple more chapters after this.

Chapter Four: In which Don has his eyes opened, and Amita talks to Charlie.

-SE-

"So," Ian bit back a laugh, "No way in Hell I'll get you firing a rifle, huh?"

"Shut up," Charlie glared at him, which only made him laugh. "I'm not here for a lesson, just to watch."

"Sure you are," Ian smirked and turned to Don, who was watching them with an amused expression. "You'd better be here to shoot though."

"Absolutely," Don nodded. "But Dad would probably kill me if I let Charlie pick up a gun again."

"Yeah, yeah," Charlie rolled his eyes and sat down at a nearby table so he could observe and write at the same time. Don and Ian shared a chuckle as the rest of the team arrived, and they set about the business at hand.

-SE-

"Miss." *Bang!* "Dead hit." *Bang!* "Scrape it." *Bang!*

Ian was aware of Charlie's muttered predictions, and slightly unnerved by the accuracy. He raised an eyebrow at the young professor and received a cheeky grin in return.

"Pay no attention," Don muttered as he reloaded. "He does that all the time."

"Oh?" Ian was curious.

"Yeah. When I played baseball, he'd always predict, fairly accurately I might add, how many hits and misses I'd get just by watching my stance."

"It's not that hard to transfer the equation to shooting," Charlie shrugged. "Even though your stance is more limited, it just means that the small variations matter more."

"If you say so," Ian nodded. He never would have thought to cross baseball with shooting, but apparently it made sense to Charlie.

-SE-

"I didn't realise that they were that close," David remarked to Don as they were getting ready to leave.

"Who?" The senior agent looked confused.

"Charlie and Edgerton," David said, as if it were obvious. "They seemed pretty wary of each other last time."

"Still are, aren't they?"

"Not from the looks of it," Megan commented and nodded towards them.

Several feet away, Charlie and Edgerton were sitting on opposite sides of the table. Ian was drinking from a coffee mug, smiling indulgently, whilst Charlie was apparently explaining the equations he'd been working on. The young professor looked excited and was smiling as he gestured enthusiastically.

"Guess they worked out their differences," Don said non-comittedly, though inside he was concerned. He wasn't sure he liked the almost territorial look that Edgerton was giving his little brother, and his mind flashed back to the conversation they'd had at the start of the training session. At the time he hadn't thought much about it, but Edgerton's comment had made it apparent that the two men had spoken in private since the sniper had arrived in Los Angeles.

Don wasn't sure why the thought bothered him so much, but he wasn't going to ignore it. His instincts were rarely wrong, and where Charlie was concerned, he wasn't taking any chances.

Megan didn't say anything, though she kept one eye on the men at the table and the other on Don. She'd suspected for a while that Charlie might 'swing both ways' as it were, and she was fairly certain that Edgerton was more than a little interested in him. What concerned here was Don's reaction to the potential relationship, and she wondered if Charlie had ever actually outed himself to his family. She shook her head to clear her thoughts, as Don called out to his brother.

"Hey Charlie! You coming, or should I let you walk back to college?"

"Coming!" Charlie called back and started to gather the notepads that he'd scattered over the table. As he stood to leave, Edgerton grinned up at him and made a gun with his right hand.

"Bang, bang," he grinned and twitched his wrist, pretending to shoot Charlie. The professor grinned back before jogging to catch up with Don.

-SE-

Back at his office, Charlie was going through the notes he'd made at the gun range, when something fell out of one of the pads. He picked it up and blinked in surprise. It was Edgerton's business card. He turned it over and let out a small laugh. A cell phone number was written on the back, underneath the words 'bang bang'.

Charlie smiled for a moment, considering. Did he want to take a chance? He was interrupted from his thoughts by a knock on the door, before Amita walked in. His smile faded a little. Truth be told, he still wasn't sure where the two of them stood, and he knew he should sort that out first. Things were very complicated.

"Hey Amita," he greeted her softly.

"Hey Charlie," she smiled back. "Look, I know that I was meant to help you with that program tonight, but I was wondering if we could reschedule? Something came up." The beautiful young woman looked uncomfortable, and Charlie blinked in surprise before he remembered what she was talking about. They were working on a 'math for non-mathematicians' computer program for the college, and had planned on going through the preliminaries that night.

"Of course we can," he assured her. "That's not a problem. May I ask…" He trailed off as a student he vaguely recognised stuck his head around the door.

"Ami, you coming? We'll be late."

"Just a second, Pete," Amita smiled shyly at the boy, and something clicked in Charlie's mind. "I need to clear something with Professor Eppes."

"Okay. Sorry to bother you, Professor," the boy nodded and left. Amita turned back to Charlie, biting her bottom lip nervously.

Charlie, on the other hand, was sporting a huge grin.

"You have a date!" He said gleefully, and Amita sighed in relief.

"Yeah. I mean, things between us…"

"Are complicated," Charlie nodded. "I know. We got so used to the student/teacher boundaries that we can probably never completely get rid of them."

"Exactly. So, you don't mind?"

"Of course not," Charlie assured her. She raised an eyebrow, and he laughed. "Okay, maybe a little. But you deserve to be happy, so go! Have your date, have a relationship. I'm happy for you."

"Thanks, Charlie," Amita gave him a quick hug. "Do me a favour though?"

"What is it?"

"You deserve to be happy too. So find someone that can make you smile, and go for it."

"Yeah…" Charlie muttered as she turned and left. Without looking, he picked up his cell and dialled a number. When it was answered, he spoke without preamble.

"So… you up for dinner?"