Non-traditional female career for girls

If it's important to maintain clear distinctions between the sexes – and I agree that it is – should we encourage our school-age daughters to think in terms of pursuing non-traditional female career choices? One of our girls has been talking about becoming a firefighter when she grows up. I realize that most people in contemporary secular society wouldn't have any problem with this, but as a conservative Christian I can't help wondering: does a goal like this align with genuinely biblical womanhood? Should I try to steer my daughter in another direction?