that is somewhat rude thing to say, women are just as capable doing these sorts of jobs, in US military some 300 000 personal are women. There are woman combat pilots on planes and helicopters, Naval Captains commanding large destroyers and even Women who attained rank of Major General.
I'm talking about one individual, not every woman on the planet. If you can't do the job properly, you shouldn't have that job. No matter what the job is or the gender you are.