Engineer is smart, I bet he can guess. Looking at Pyro it is easy to tell she is young, yes?

[She didn't know if saying the exact number would be considered classified information. With as much as she liked to talk be it about herself or any other subject sometimes she worried what she might blurt out. Pyro was a rather honest girl who without her mask on could say some rather surprising things.]

Hmm. Probably longer then Scout.

[She had never put too much thought into it but now that she brought up that girl crazy boy she remembered that the age gap between the rest of her comrades was big.]