Sure, why not?

Reid shrugged and then selected AGE before he then looked at the two age options and randomly selected 18. Within moments, the screen confirmed his choice and, as he watched, the woman in front of him seemingly melted away the years before her skin, already youthful in its appearance, bore the result of his selection. Her face, hair, skin, eyes, even body down to the legs were changed to reflect how she looked at 18...or rather, what her body was like at 18. His stunned look must've been comical as she covered her laughter. "What th..."

"Oh, you're such a good partner for James, I'm sure he'll be thrilled to see you." She looked at her hands for a moment and then felt her face and hair before turning her attention back to him. "Anyway...so, as I was saying, once you adjust the physical characteristics, you can then turn and adjust the mental aspects of your partner. In this case, you would be able to adjust James' mental state, down to both basic as well as high-level functions. In a sense, it would be sort of conditioning his brain to adjust to the changes you've made. What is the point of being covert if something he does, says, or thinks even causes your cover to be blown?"

Reid took a moment to look between the screen and the person in front of him. "I.Is this permanent?"

She tilted her head to the side for a moment before she smiled again and playfully tapped him on the shoulder. "Of course! Well, not permanent over his life...but your changes are permanent until you change him again. Can't have it wearing off in the middle of the assignment, yes?" His look of momentary horror at the control aspect in his hands caused her to place a reassuring hand on his shoulder again. "Relax, Reid, James is trusting you with this assignment. He's...well...I'll let him tell you when he's ready."

There was a knock on the door before it opened and the assistant director's assistant came in. "Oops...I love it!" she cried and Reid had to roll his eyes as the two bounced up and down together. "Oh, sorry..." she corrected herself almost immediately before turning to look at him. "You, being the head of the team, get to choose your first assignment. Director usually assigns them to the team but since you came highly recommended, he figured you should get the crack at the first one."

What the hell...? he began but instead just dumbly nodded his head and looked at the two files in her hands:

TAIWAN

or

GERMANY